ALS35H473K2C016_技术文档

REFERENCE DATA

Websiteꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ2

TECHNICAL DATA

Optimised Designꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ3

Capacitor Constructionꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ4

Manufacturing Processꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ5

Electrical Characteristicsꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ6-8

Application and Operationꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ8-10

Life Expectancyꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ10/11

Product Safetyꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ12/13

Quality Assurance Systemꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ14

SCREW TERMINAL CAPACITORS

Introductionꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ15-20

ALS34/35ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ21-24

ACCESSORIES

Mounting Clipsꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ25

Stud Mounting Kitsꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ26

ORDERING INFORMATIONꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ27/28

DESIGN REQUEST FORMꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ29

2

Web Site

BHC web site http://www!bhc!co!uk

The web site has been designed and hosted to be content

rich, easy to navigate, and fast to accessꢀ The presentation

of the site has been kept simple in order to avoid large page

sizes that take too long to downloadꢀ The design of the site

is aimed at the requirements of system design engineers and

purchasing personnel and attempts to answer most of the

frequently asked questions that we encounterꢀ

The site content includes static pages and dynamically

generated pages linked to a JAVA databaseꢀ The static pages

cover generic information that will not require updating on a

regular basis, whereas, the dynamic pages relate to data

that may change on a more frequent basisꢀ

The site content is subject to continual change as we try to

best serve the needs of our new

and existing customersꢀ We

welcome any feedback or

constructive comments on ways

we can improve the site, or any

new content or functionality that

you feel should be available

onlineꢀ

Some of the main features and

content of the new web site will

include;

● product selector - dynamic

● specification sheet report generator dynamic

● life expectancy calculator dynamic

● capacitor construction theory static

● electrical characteristics static

● application and operation (eꢀgꢀ mounting, protection,

balancing resistors, etcꢀꢀꢀ) static

● cleaning solutions - static

● product safety - static

● component weights - static

● product approvals - static

● company information static

● download area for literature static

● form requests (quotation, product literature)

3

Optimised Design

Optimised Design Service

Approximately 70% of BHC sales comprise application

specific capacitor designs supplied to medium and large OEM

(original equipment manufacturers) customersꢀ These

designs are neither found in the product catalogue, nor on

the website, but have been optimised through close

consultation with system designersꢀ

There are a number of design changes that can be made to a

standard product that can result in one or more of the

following characteristics being achieved;

● lower cost

● increased CV in the same can size, or

reduced can size for the same CV

● lower ESR resulting in higher ripple current

rating

● special print requirements

All standard and custom designs are

typically verified by generic in-house

endurance testing, surge voltage testing

(according to customers requirements),

mechanical testing for shock and

vibrationꢀ

ECAD Design and

Simulation Software

BHC has developed a proprietary CAD

package called ECADꢀ The principle

functions of ECAD include;

● interface to company

AS400 business system (iꢀeꢀ bill of materials

for procurement)

● creation of manufacturing instructions

● issue / revision control

● real time costing

● design creation

● life expectancy simulation (with website

extension)

● product selector (with website extension)

● specification sheet creation

● design archiving

Using this system BHC application and design engineers are

able to offer a rapid response to technical queries relating

to existing designs or proposals for new applicationsꢀ For

further information on how this service can benefit your

application contact the Technical Sales department at BHC

or Email you enquiry to bhcsales@bhcꢀcoꢀuk marked for the

attention of Technical Salesꢀ

4

Capacitor Construction

Basic Construction of a Capacitor

Aluminium Electrolytic Capacitors

The basic principle of the capacitor is to store electrical

charge (Q in coulombs)ꢀ The potential charge it can hold is

determined by the capacitance (C in Farads) and voltage (V

in volts) and is defined as:-

The aluminium electrolytic capacitor consists basically of

two foils interleaved with an absorbent paper wound tightly

into a cylinderꢀ The main advantage of this type of capacitor

is the high capacitance per unit volume due to its internal

construction which consists of a very thin dielectric layer

and large effective surface areaꢀ

Q = C ꢀ V

The unit of capacitance, the Farad, is the capacitance of the

capacitor between the plates across which there appears a

potential difference of 1 volt when it is charged by 1

coulomb of electricityꢀ The value of capacitance in a basic

capacitor is proportional to the area of the plates and

inversely proportional to the distance between themꢀ Not

only does this distance between the plates have an effect on

capacitance but also the material that occupies the space,

known as the dielectricꢀ

The positive plate, or anode, is made from aluminium foil

which is etched to increase the surface areaꢀ The dielectric

is aluminium oxide, which is formed electrolytically onto the

surface of the foilꢀ This formed oxide layer is very thin,

being proportional in thickness to the forming voltage and

possesses a semiconductor characteristicꢀ The oxide

thickness for a 25 volt working capacitor is in the order of

0ꢀ045 microns

If the space were to be occupied by a perfect vacuum then

cathode

dielectric

A = surface area

+ve

dielectric

-ve

aluminium foil

d

aluminium foil

the capacitance can be determined by:

paper soaked in electrolyte

C = ₀ꢀ A

d

anode

electrolyte solution

A = surface area of the plates in m²

d = distance between the plates

(or dielectric thickness) in m

The negative plate, or cathode, is provided by an electrolyte

solution for two reasons:

₀= permittivity of free space - 8ꢀ85 x 10^-12F/m

● allows good contact with the anode by

permeating all the etched structureꢀ

● repairs any flaws in the oxide layer when the

capacitor is polarisedꢀ

In practice this space is occupied by a dielectric which has a

relative permittivity to that of the vacuum as follows:

MATERIAL

Vacuum

Air

Paper (dry)

Polythene

Insulating oil

Bakelite

Glass

RELATIVE PERMITTIVITY

1ꢀ0

The second foil, usually called the cathode foil, contacts

with the electrolyte reducing the series resistanceꢀ This foil

has a thin stabilized oxide film, and therefore will also

possess a very high capacitanceꢀ Like the anode foil the

cathode is also etched to increase the surface areaꢀ This is

necessary in order to eliminate the effect on the overall

capacitance by the presence of the cathode foilꢀ

1ꢀ0006

2 - 2ꢀ5

3 - 4

4ꢀ5 - 5ꢀ5

5 - 10

Therefore capacitance is determined by:

equivalent circuit

C = ₀ꢀ

ꢀ A

d

r

_r= relative permittivity of the dielectric

anode

cathode

1

Ctotal

1

=

+

Canode

Ccathode

5

Manufacturing Process

The manufacturing process begins with the

anode foil being electrochemically etched

to increase the surface area and then

formed to produce the aluminium oxide

layerꢀ

Extended cathode

Anode foil

Both the anode and cathode foils are then

interleaved with absorbent paper and

wound into a cylinderꢀ During the winding

process aluminium tabs are attached to

each foil to provide the electrical contactꢀ

Foil tabs

The deck, complete with terminals, is

attached to the tabs and then folded down

to rest on top of the windingꢀ

The complete winding is impregnated with

electrolyte before being housed in a

suitable container, usually an aluminium

can, and sealedꢀ Throughout the process all

materials inside the housing must be

maintained at the highest purity and be

compatible with the electrolyteꢀ

Tissues

Cathode foil

Etching

Forming

Winding

Decking

Before being sleeved and packed each capacitor is aged and

testedꢀ The purpose of ageing is to repair any damage in the

oxide layer and thus reduce the leakage current to a very

low levelꢀ Ageing is normally carried out at the rated

temperature of the capacitor and is accomplished by

applying voltage to the device whilst carefully controlling

the supply currentꢀ The process may take several hours to

completeꢀ Damage to the oxide layer can occur due to

variety of reasons:

● slitting of the anode foil after forming

● attaching the tabs to the anode foil

● minor mechanical damage caused during winding

After completion of the production process a sample from

each batch is taken by the quality departmentꢀ This sample

size is controlled by the use of recognised sampling tables

defined in BS 6001ꢀ

Impregnation

Assembly

Ageing

The following tests are applied and may be varied at the

request of the customerꢀ In this case the batch, or special

procedure, will determine the course of action:

Electrical:

● Leakage current

● Capacitance

● ESR

● Impedance

● Tan Delta

Mechanical/Visual:

● Overall dimensions

● Torque test of mounting stud

● Print detail

Testing

Sleeving

Packing

● Box labels

● Packaging, including packed quantity

6

Electrical Characteristics

Rated Capacitance (C_R)

Voltage Proof

This is the designed value of capacitance, usually specified

in micro-Farads (µF), when measured with an aꢀcꢀ voltage

<0ꢀ5V at 100Hz and 20°C, with no bias voltage appliedꢀ The

value of capacitance decreases with frequency and increases

with temperature, the magnitude of variation being

dependent on the capacitor typeꢀ

Values are quoted for each range in the data sheetsꢀ These

values are applicable to insulating sleeves and end discs in

good condition with no scuffs or scratchesꢀ Damage caused

by improper handling may reduce these valuesꢀ

The test involves applying a high dꢀcꢀ voltage, eꢀgꢀ 2500V,

across the insulating sleeve of the capacitor for a period of 1

minuteꢀ During this test period there should be no sign of

breakdown or flashoverꢀ

Capacitance Tolerance

Due to material and manufacturing process variability a

tolerance is specified for the rated capacitanceꢀ For a

typical batch of capacitors the distribution of capacitance

values is generally within ±5% of a nominal valueꢀ

Leakage Current

This is the residual current which continues to flow when

the capacitor has been charged up to a set voltageꢀ At this

voltage its magnitude is determined by the thickness

(forming voltage) and degree of perfection of the dielectric

oxide and foil surface areaꢀ The value of leakage current

will continue to fall, whilst voltage is applied, until a very

low steady state value is reachedꢀ Its value will increase

both with voltage and temperatureꢀ The longer capacitors

are stored with no applied voltage, the higher the initial

leakage currentꢀ More details are given under shelf lifeꢀ

Rated Voltage (U_R)

The rated voltage is the value of voltage that may be

applied continuously, within the operating temperature

range of the capacitorꢀ Generally the rated voltage and

category voltage have the same valueꢀ

Surge Voltage

Unless otherwise stated in the data sheets capacitors shall

withstand 1000 cycles at upper category temperature as

described below:

Equivalent Series Resistance

The equivalent series resistance (eꢀsꢀrꢀ) is made up of

several resistive components within the capacitor, including

electrolyte, tissue separators, foils etcꢀ The method of

construction also plays an important roleꢀ For example, the

eꢀsꢀrꢀ can be significantly reduced in some cases by making

multiple connections to the anode and cathode foilsꢀ The

eꢀsꢀrꢀ is both temperature and frequency dependent,

increasing either will cause a reduction in eꢀsꢀrꢀ, as

exemplified by the graph below:

Charge to surge voltage and hold for 30 seconds followed by

a no load period of 5ꢀ5 minutes with the capacitor

disconnected and allowed to discharge internallyꢀ The power

supply used shall be capable of delivering >5 A at the test

voltageꢀ

Short duration surge voltage - certain product ranges are

able to withstand a higher surge voltage but for a shorter

period of timeꢀ Where applicable these capacitors shall

withstand 100 surges at 20°C as described below:

Charge capacitor to rated voltage then charge up to short

duration surge voltage for a period of <500 mS then

discharge completely, followed by a no load period of 5

minutesꢀ Figures for this test, where applicable, are shown

under the range data sheetsꢀ

ESR

20°C

Transient Surge Voltage

55°C

85°C

High voltage capacitors (250V 500V) manufactured by BHC

are capable of withstanding very high transient surge

voltages for short durationꢀ For example, the 400V

capacitors from the ALC10 series have been successfully

tested to 600V for 500ms as an isolated condition, iꢀeꢀ once

per dayꢀ Ultimately the performance of the capacitors under

this type of condition is dependent on four criteria:

100

1000

10000

Frequency - Hz

Impedance (Z)

The impedance is governed by the capacitance (C), eꢀsꢀrꢀ and

inductance (L) of the capacitor and is given by the formula:

● value of the voltage;

● duration;

Z = esr²+ (X_L- X_C)²

● temperature;

● repetition rate

Where X_L= 2ꢀπꢀfꢀL and X_C=

1

(2ꢀπꢀfꢀCꢀ)

Given this information BHC can advise on the suitability of a

given capacitor for the applicationꢀ

The impedance is dominated by the capacitive reactance

(X_C) at low frequencies and by the inductive reactance (X_L)

at high frequenciesꢀ Series resonance occurs when X_L= X_Cat

which point Z = eꢀsꢀrꢀ

Dissipation Factor

The dissipation factor or tangent of the loss angle (tan δ) is a

measure of the deviation from that of an ideal capacitor,

and is related to the capacitance and eꢀsꢀrꢀ values as

follows:-

The impedance is clearly frequency dependent and is

temperature dependent due to the capacitance and eꢀsꢀrꢀ

termsꢀ

Tan δ = 2ꢀπꢀfꢀCꢀesr

Where capacitance (C) and eꢀsꢀrꢀ are at frequency fꢀ

7

Electrical Characteristics

Inductance

Climatic Category

The Climatic Category, in accordance with IEC 68-1, is based

upon three groups of digits which decode as follows:

Some inductance is present in all wound aluminium electro-

lytic capacitors as a result of the construction of the winding

and the tabbingꢀ The value is usually not more than a few

tens of nano-henrys and is more or less constant with

changes in temperature and frequencyꢀ

40 / 085 / 56

LCT

UCT

DH

Ripple Current (I_R)

Ripple current, caused by the application of an alternating

voltage waveform, will generate heat inside the capacitorꢀ

The power loss is given by:

Where:

LCT = Lower category temperature °C (eꢀgꢀ 40 = -40°C)

UCT = Upper category temperature °C (eꢀgꢀ 85 = +85°C)

DH = Damp heat test days (IEC 68)

P = I_r²ꢀesr (Watts)

Where:

P = Power loss

Shelf Life

The capacitance, ESR and impedance of a capacitor will not

change significantly after extended storage periods, however

the leakage current will very slowly increaseꢀ BHC products

are particularly stable and allow a shelf life in excess of ten

years at room temperatureꢀ

I_r= Ripple Current (Amps)

The maximum power a capacitor can handle is dependent

upon the style and surface area of the can, the thermal

dissipation factor, and the permissible core temperature rise

within the capacitorꢀ Thus for a given capacitor a maximum

continuous ripple current rating can be establishedꢀ

Capacitors have a maximum designed core temperature

which is higher than the specified maximum ambient

operating temperature for the componentꢀ At lower

ambient temperatures higher ripple currents can be applied

provided the maximum core temperature is not exceededꢀ

Factors are given in the data sheetsꢀ Increased ripple

currents are also possible at higher frequencies, since the

eꢀsꢀrꢀ is lowerꢀ Heat-sinking and forced air cooling will both

aid heat transfer and thus allow higher ripple currentsꢀ

The shelf life is shown in the figure belowꢀ Within region 1

the leakage current should remain within its specified limit

when measuredꢀ In region 2 the leakage current may

initially exceed the specified limit and if the measured value

is higher than twice the specified limit then re-ageing is

recommendedꢀ

85

65

45

25

Note, some additional heat is generated by the leakage

current, but this is normally much less than that generated

by the ripple current and so can be ignoredꢀ

Since the ripple current raises the temperature of the

capacitor, it has a significant effect on the operational life

of the componentꢀ Further details are given under life-

expectancyꢀ

1

5

-15

-35

-55

1

10

100

Temperature Range

The maximum operating temperature or upper category

temperature is the maximum temperature at which the

capacitor is designed to operate continuouslyꢀ Choice of

foils, electrolyte and encapsulation materials ultimately

determine this figureꢀ

The lower category temperature is the lowest temperature

at which the capacitor is designed to operate continuouslyꢀ

The electrolyte resistivity and viscosity both increase at low

temperatures causing loss of capacitance and increased

eꢀsꢀrꢀ

Thousands of hours

Re-age Procedure

Apply the rated voltage to the capacitor at room

temperature for a period of one hour, or until the leakage

current has fallen to a steady value below the specified

limitꢀ During re-ageing a maximum charging current of

twice the specified leakage current or 5mA (whichever is

greater) is suggestedꢀ

8

Electrical Characteristics

Application & Operation

Change in Electrical Characteristics

Various electrical parameters will alter with frequency, temperature and voltage as shown:

Temperature

increase

Frequency

increase

Voltage

increase

Time

under voltage

Capacitance

ESR

Impedance

(below resonance)

Impedance

(above resonance)

DC leakage

APPLICATION AND OPERATION

transient conditions but offer the possibility of exposing one

half of the bank to full voltage should one capacitor short

circuitꢀ

Aluminium electrolytic capacitors are used in a wide variety

of applications including; power supplies, inverters for

variable speed drives and uninterruptible power supplies,

energy discharge (for medical and photoflash applications)

and motor startingꢀ Their advantages over other capacitors

are:

Full details on the selection and use of shunt resistors can

be found in a technical article, TD001, in Aluminium

Electrolytic Capacitors - Application Notes, available

from BHC&

● high capacitance per unit volume

● high ripple current capability

In parallel operation, particularly large, high voltage banks,

the possibility of capacitors discharging into each other may

entail special precautions in certain applicationsꢀ

For optimum performance of this type of capacitor the

following points should be considered:

Series/Parallel Bank Protection

Parallel and Series Operation

There are three major configurations to consider in

protecting a series/parallel bank of capacitorsꢀ The

advantages and disadvantages of each are outlined below

but the final choice must be made by the equipment

designerꢀ

Special considerations arise when electrolytic capacitors are

used in series or parallel banksꢀ

In series operation, matching of capacitance values may be

necessary to avoid imbalance during charging and

discharging modeꢀ Steps must be taken to ensure adequate

dꢀcꢀ voltage distribution while biased, either by providing

shunt resistors to compensate for inequalities in capacitor

dꢀcꢀ leakage currents, or some other meansꢀ

OPTION 1 - Fusing for whole bank

There are two major configurations to consider when

constructing a series/parallel bank of capacitors - individual

balancing resistors and common centre connectionꢀ

Individual balancing resistors afford greater protection for

the capacitors if one becomes short circuit but is more

complex to construct and expensiveꢀ Common centre

connections give improved balancing during steady state and

9

Application & Operation

Advantages

● Simple construction

● Inexpensive

The life expectancy of a capacitor at full rated voltage is

multiplied by the voltage deration factor to obtain the new

life expectancy at the lower operating voltage:

(Vop)

(Vr)

Disadvantages

Le

= Le x Kv

● Only offers basic protection

(Vop)

Le

(Vr)

Le

Kv

● Cannot protect against internal discharges within bank

- Life expectancy at operating voltage

- Life expectancy at rated voltage

- Voltage deration factor

OPTION 2 - Individual capacitor fuses

Polarity and Reversed Voltage

Aluminium Electrolytic capacitors manufactured for use in

dꢀcꢀ applications contain an anode foil and a cathode foilꢀ As

such they are polarised devices and must be connected with

the +ve to the anode foil and the -ve to the cathode foilꢀ If

this were to be reversed then the electrolytic process that

took place in forming the oxide layer on the anode would be

recreated in trying to form an oxide layer on the cathodeꢀ In

forming the cathode foil in this way heat would be

generated and gas given off within the capacitor usually

leading to catastrophic failureꢀ

Advantages

● Removes faulty capacitor from circuit

The cathode foil already possesses a thin stabilised oxide

layer, this thin oxide layer is equivalent to a forming voltage

of approximately 2Vꢀ As a result, the capacitor can withstand

a voltage reversal of up to 2V for short periodsꢀ Above this

voltage the formation process will commenceꢀ

Disadvantages

● Expensive

● Complex assembly (busbars and fuses)

OPTION 3 - Electronic monitoring

Aluminium electrolytic capacitors can also be manufactured

for use in intermittent aꢀcꢀ applications by using two anode

foils in place of one anode and one cathodeꢀ

Advantages

● May prevent serious failure by early shut down of

equipment

● Optional bank discharge mechanism to prevent

capacitors dumping charge into failed capacitor

Case Polarity - due to the presence of electrolyte in the

capacitor the aluminium can, stud mounting and any dummy

pins will essentially be at the same potential as the negative

terminalꢀ BHC therefore recommend that they are either:

Disadvantages

● Must be designed into control circuitry

● Complex and expensive

● left unconnected

● connected to the same potential as the negative

terminal

● insulated

Voltage Deration

If capacitors are operated at a voltage below their rated

value then the reduced stress and lower leakage current will

give an improvement in the life expectancyꢀ

Mounting

All aluminium electrolytic capacitors incorporate a safety

vent, in order to relieve build up of internal pressure due to

over stress or catastrophic failureꢀ For the smaller ranges,

such as snap-in or solder pin types, this takes the form of a

weakened area in the side or base of the canꢀ For the larger,

screw terminal types the vent is incorporated in the deckꢀ

Since leakage current increases with temperature the

benefit of a reduced operating voltage is more pronounced

at higher temperaturesꢀ The graph below shows the voltage

deration factor (Kv) for products with a rated temperature

of 85°C and core temperatures (Tc) of 45°C, 65°C and 85°Cꢀ

In all cases consideration must be given, when mounting the

capacitor, to the operation of the vent under failure

conditionsꢀ It is recommended that capacitors are always

mounted with the safety vent uppermost, or in the upper

part of the deviceꢀ Should the vent operate the least amount

of electrolyte will then be expelledꢀ

1ꢀ5

1ꢀ45

1ꢀ4

1ꢀ35

1ꢀ3

It is worth noting that screw terminal capacitors may be

mounted in any position so long as the vent can operateꢀ

The operational and parametric performance is totally

unaffected by the physical orientation but should the vent

operate with the capacitor mounted upside down then a few

drops of electrolyte may be expelledꢀ

1ꢀ25

1ꢀ2

1ꢀ15

1ꢀ1

1ꢀ05

1

70

75

80

85

90

95

100

Mounting continued overleafꢀꢀꢀꢀ

% of rated voltage

10

Application & Operation

Life Expectancy

Mounting continuedꢀꢀꢀꢀ

Alcohols

Board mounting types are designed to be mounted by their

terminals aloneꢀ Larger types may have dummy pins for

extra rigidityꢀ Screw terminal and tag ended types may be

fixed with a base stud or suitable mounting clampꢀ

Component cleaning using solvents such as isopropanol,

methanol, ethanol, and propanol would not normally have

any detrimental effects and therefore do not require any

special precautionsꢀ

Adequate space should be allowed between components for

cooling air to circulate, particularly when high ripple

currents are being appliedꢀ

Aqueous cleaning methods

Aqueous cleaning methods in conjunction with saponification

may be usedꢀ However, it is recommended that immediate

drying of the component in hot air at approximately 85°C for

at least 5 minutes is carried outꢀ

Altitude and Low Air Pressure

All capacitors manufactured by BHC are hermetically sealed

and should therefore suffer no electrolyte seepage even

under vacuum conditionsꢀ Additionally the electrical

parameters of capacitance, esr, impedance and leakage

current will be unaffectedꢀ

Water can become entrapped beneath the sleeve and unlike

the solvents used above may not be adequately dispelled by

evaporation at room temperatureꢀ Trapped water can cause

the hydration and discolouration of the surface of the

aluminium can, however this is in no way detrimental to the

functioning of the capacitorꢀ

If a capacitor is operated at altitude, however, the life will

be affected slightly for two reasonsꢀ Convected heat loss

will be reduced as the air density falls resulting in the

capacitor running hotter with a consequent reduction in lifeꢀ

Halogenated Hydrocarbons

Halogenated Hydrocarbons contain CFCs and as such are

ozone depleting chemicals (ODCs)ꢀ It is not recommended

that they are used as cleaning solventsꢀ In addition these

solvents can be injurious to electrolytic capacitors by

absorption into the rubber seals followed by subsequent

diffusion into the case, and attack of the winding, leading to

premature failureꢀ

As the air pressure drops the differential between the

internal case pressure and external pressure increasesꢀ A

complete vacuum would cause the internal pressure to rise

by 15 psi (approxꢀ)ꢀ If maintained this would lead to

increased electrolyte vapour loss and give a slight reduction

in life expectancyꢀ

BHC will calculate the life expectancy of a capacitor under

other sets of conditions provided as much as possible of

the following data is supplied:

LIFE EXPECTANCY

The life expectancy represents the typical period of time

until the end of life is reached, which in this case is

characterised as follows:

Operating voltage - this should be taken as the sum of the

nominal dꢀcꢀ voltage and the peak of the aꢀcꢀ ripple voltageꢀ

CATASTROPHIC FAILURE

Ripple current - the rms values should be given at each

frequencyꢀ

-

open or short circuit

MECHANICAL FAILURE

operation of safety vent, split sleeving, etc

PARAMETRIC FAILURE

Air temperature - the temperature of the air surrounding or

flowing over the capacitors

-

Thermal aspects - type of cooling, iꢀeꢀ natural convection or

rate of forced air flow (m/s)ꢀ Thermal resistance of heat sink

or chassisꢀ

-

capacitance change > ± 10%

esr > 2 x initial value

End of life criteria - any special end of life conditions if

different from those stated aboveꢀ

impedance > 3 x initial value

leakage current > specified limit

Some circuits may be able to tolerate larger parametric

variations than shown above, in which case the life of the

component will be extended beyond the figures quotedꢀ

Life Expectancy and Thermal Characteristics

A key aspect of the life expectancy calculation is the core

temperature of the capacitorꢀ It is essential to determine

this operating core temperature either by calculation or by

measurementꢀ

The life expectancy data is statistically derived from

extensive endurance testing of standard production

components and data gathered from components in the

fieldꢀ It does not guarantee the performance and BHC

Components cannot assume responsibility for its useꢀ

Heat is generated inside the capacitor by the effect of ripple

current which raises the core or hot-spot temperature above

that of the ambient airꢀ Heat is also generated by the

leakage current, however this is normally small enough to be

ignoredꢀ

Reducing the stress level on the capacitor (iꢀeꢀ lower

voltage/current/temperature) will increase the life

expectancy, as will improved coolingꢀ

Other circuit components in close proximity will also

contribute to the heating of the capacitorꢀ As will any

mechanical connections to the capacitor, such as the

continued on next pageꢀꢀꢀꢀ

11

Life Expectancy

mounting method, which is at a higher temperature than the

ambient airꢀ Under steady state conditions, when thermal

equilibrium has been reached, the heat generated will be

exactly balanced by the heat lossꢀ

A full technical article, TD003, is included in Aluminium

Electrolytic Capacitors - Application Notes, available

from BHC, which explains life expectancy and thermal

characteristics in more detail& Included in the article is an

explanation of how to calculate life expectancy by the

end user&

If we consider only the loss of heat generated within the

capacitor, and ignore heat absorbed from surrounding

components and through the mounting arrangement, we

arrive at the simplified thermal equivalent circuit shown

belowꢀ

Life Expectancy and Rated Ripple Current

When ripple current is applied to a capacitor the most

important parameter in relation to the life expectancy is the

esrꢀ The value of esr will slowly increase throughout the life

of the capacitor, leading to a gradual increase in power loss

and hence core temperature riseꢀ

Core temp

Long term endurance testing, with voltage and ripple

current applied, has established the characteristic

parameter changes which are displayed by each product

familyꢀ The typical esr characteristic is shown below:

Rhc

Can temp

Rbp

ESR

Increase

Life

Rca

Rpa

Careful study of these curves has enabled the development

of a mathematical model to simulate the changes in esr

which occur under various test conditions and level of stressꢀ

Ambient temp

The results of these mathematical models is included in a

full technical article, TD004, in Aluminium Electrolytic

Capacitors - Application Notes, available from BHC& The

article includes graphs for most products which allow life

expectancy to be extrapolated, based on rated ripple

current and ambient air temperature&

Thermal resistance factors:

Rhc = Hot-spot to can

Rca = Can to ambient air

Rbp = Can base to mounting plate

Rpa = Mounting plate to ambient air

Total thermal resistance from hot-spot to ambient air is

given by:

Rha = Rhc + 1/(1/Rca + 1/(Rbp + Rpa))

measured in °C/W

In each case the thermal resistance factors shown are

effectively a lumped combination of conduction, convection

and radiationꢀ

The method of construction, standard or extended cathode,

will determine the Rhc valueꢀ The values of Rca and Rpa will

vary according to the level of airflow, if anyꢀ The value of

Rbp will depend upon the characteristics of the material

placed between the aluminium base of the can and the

mounting plate (iꢀeꢀ insulating end discs and/or thermal

pads) and also on the pressure holding the capacitor against

the mounting plateꢀ

BHC have carried out extensive testing to establish the

thermal resistance of the hot-spot to ambient, Rha, for each

case size across each rangeꢀ From this data, life expectancy

can be calculated for both standard and special designs

under most operating conditionsꢀ

12

Product Safety

THESE NOTES SHOULD BE READ IN CONJUNCTION WITH THE PRODUCT DATA SHEETꢀ FAILURE TO OBSERVE THE

RATINGS AND THE INFORMATION ON THIS SHEET MAY RESULT IN A SAFETY HAZARDꢀ

WARNING

When potentially lethal voltages e&g& 30V a&c& (r&m&s) or 60V d&c& are applied to the terminals of this product, the use of

a hazard warning label is recommended& In the case of motor start capacitors they meet the requirements of British

Standard Specifications BS&5267:1976 and reference should be made to Appendix C - Guide for installation and

operation&

2! PHYSICAL FORM

1! MATERIAL CONTENT

These capacitors are cylindrical, with axial, radial or screw

terminationsꢀ

Electrolyte

Aluminium electrolytic capacitors contain liquids

(electrolytes) which can be hazardousꢀ The electrolytes are

conducting solutions of organic and/or boric acid,

neutralised with amines or ammonia, in a variety of

solventsꢀ

3! INTRINSIC PROPERTIES

Operating

DꢀCꢀ capacitors are polar devices, and will operate safely

only if correctly connectedꢀ Reversing the connections will

result in high leakage currents which could subsequently

cause short circuit failure, rupture of the safety vent and

possibly explosion and fireꢀ

The major solvents are butyrolactone and ethylene glycolꢀ

Co-solvents eꢀgꢀ N-methyl pyrolidone may be presentꢀ

Inorganic or organo-phosphates are present in low

concentrationꢀ

The physical, chemical and toxicological properties of the

electrolytes are largely determined by the solvents, as

summarised below:

Correctly polarised operation may result in the above failure

modes if:

- the surge voltage is exceededꢀ

- the ambient temperature is too highꢀ

- excessive ripple currents are appliedꢀ

AꢀCꢀ typres are non-polarꢀ Catastrophic failure may be

caused by:

Physical Properties

1ꢀ Low viscosity - typically 5 - 50 cp at 25°C

2ꢀ Combustible - Flash points 95 - 120°C

- Abnormal duty cyclesꢀ

3ꢀ Low vapour pressure - < 20mm Hg at 25°C

- Voltage in excess of rated valueꢀ

- Ambient temperature too highꢀ

Chemical properties

1ꢀ Non-corrosiveꢀ

Non Operating

Aluminium electrolytic capactiors contain liquids which can

leak out (see material content)ꢀ

2ꢀ Can be aggressive to many plastics, lacquers and

resinsꢀ

3ꢀ Totally soluble in hot waterꢀ

Damage to the encapsulation may cause leakage of the

electrolyteꢀ Excessive torque or soldering heat may affect

the performance of the capacitor or damage the sealingꢀ

Toxicology

The electrolytes are moderately toxic, with LD50 values in

the range 1ꢀ5 - 2g/Kgꢀ

Electric shock may result if capacitors are not dischargedꢀ

Skin exposure can cause drying and de-fattingꢀ Severe

irritation may be caused to the mucous membranes,

particularly the eyes, where conjunctivitis may resultꢀ

4! FLAMMABILITY

Most plastics and elastomers are combustible, iꢀeꢀ will ignite

if an ignition source is applied under suitable conditions of

temperature and oxygen levelꢀ For most published data the

UL94 Horizontal or Vertical Burning System has been appliedꢀ

Although useful for comparative values, this test is not

practicable, as the ignition characteristics are strongly

influenced by the material dimensions, and other materials

with which they may be in intimate contactꢀ

Safety Precautions

In the event of electrolyte escape, wash the affected area

with hot waterꢀ Use rubber gloves to avoid skin contactꢀ

Any contact with the eyes should be liberally irrigated with

water, and medical advice soughtꢀ

Note - the electrolyte systems do not contain materials

currently listed as carcinogenic, mutagenic or teratogenic,

eꢀgꢀ polychlorinated biphenyls (PCBs), dimethylformamide

(DMF) or dimethylacetamide (DMA)ꢀ

The capacitor case may be aluminium, polycarbonate or

Norylꢀ Aluminium cans are usually sleeved with PVC or

polyolefinꢀ

BHC has completed a series of flammability tests based on a

Needle Flame Test as specified in IEC 695-2-2ꢀ Full details of

the tests undertaken on both the external components, and

internal wind elements, can be found in a full technical

article, TD005, Flammability Characteristics contained

within BHC Aluminium Electrolytic Capacitors Application

Notesꢀ

Other Materials

The end seal (cover) may be nylon, phenolic or

polybutylteraphthallate (PBT) or an EPR rubber/phenolic

laminateꢀ

Sealing rings and pressure vents are EPR or silicone rubberꢀ

13

Product Safety

5! DISPOSAL

8! DIELECTRIC ABSORPTION

Aluminium Electrolytic Capacitors are consignable waste

under the Special Waste Regulations 1996 (Statutory

Instrument 1996 N^o972), which complies with the EC

Hazardous Waste Directive - Directive 91/689/EECꢀ The

electrolyte should therefore be treated as a hazardous waste

and advice should be sought from the local office of the

Environmental Agency regarding its disposalꢀ In the United

Kingdom there are two possible methods of disposal; high

temperature incineration and land fill, from which the user

should seek the best practicable environmental optionꢀ

A phenomenon known as dielectric absorption can cause

aluminium electrolytic capacitors to re-charge themselvesꢀ

The phenomenon is well known but impossible to predict

with any great accuracy and so potentially any electrolytic

product could be affectedꢀ Thus, a capacitor, which has been

charged and then completely discharged, will appear to re-

charge itself, if left open circuit and this will manifest itself

as a small voltage across the terminals of the capacitorꢀ

Generally the voltages seen are less than 20 Vdc, however

higher voltages have on occasion been reportedꢀ

Due to the construction of an aluminium electrolytic

capacitor high temperature incineration may cause the

component to explode due to build-up of internal gas

pressureꢀ In addition, incineration may also cause emission

of noxious fumesꢀ If it is decided that this is the best

practicable option then it must be carried out under

controlled conditions and at a minimum temperature of

1200°Cꢀ It should also be confirmed that the incinerator is

authorised under parts A or B of the Environmental

Protection Actꢀ

In order to avoid any problems caused by this voltage BHC

recommends that capacitors be discharged before

connecting to the terminalsꢀ

The alternative is to dispose of them in an engineered lined

land fill site that is licensed to take the materials identified

on this safety sheetꢀ It should be stressed that these

capacitors are not to be disposed of in a land fill site set

aside for domestic wasteꢀ

BHC strongly recommend that if there are any doubts regarding

the disposal of aluminium capacitors that advice be sought

from the local regulating authorityꢀ

In addition BHC would like to request that users of

aluminium electrolytic capacitors respect the needs of the

environment and wherever possible recover as much of the

materials as possible, iꢀeꢀ aluminiumꢀ

6! UNSAFE USE

Most failures are of a passive nature and do not represent a

safety hazardꢀ A hazard may, however, arise if this failure

causes a dangerous malfunction of the equipment in which the

capacitor is employedꢀ Circuits should be designed to fail safe

under the normal modes of failureꢀ

The usual failure mode is an increase in leakage current or

short circuitꢀ Other possible modes are decrease of

capacitance, increase in dissipation factor (and impedance) or

an open circuitꢀ

Capacitors should be used in a well ventilated enclosure or

cabinetꢀ

7! MOUNTING

Care should be taken when mounting by clamp, that any

safety vent in the can is not coveredꢀ

14

Quality Assurance System

BHC recognises that quality is not just a functional part of

the manufacturing process, necessary to maintain order and

control, it is a philosophy that pervades the whole

organisation at every levelꢀ Quality is the responsibility of

every member of the BHC team where the emphasis is

placed on right first time and continuous improvementꢀ

For BHC total quality forms the bond with its customersꢀ It

no longer serves to solely satisfy their current needs but

creates the environment for development and improvement

in order to anticipate and satisfy future requirementsꢀ

Customer Return Analysis

One feature of the quality system concerns the investigation

of field failuresꢀ Components returned from the field for

technical reasons will be subjected to a rigorous

investigation and, unless otherwise specified, a written

report will be providedꢀ The data collected from this

exercise is collated in a database and reviewed by senior

management resulting in corrective actions where necessaryꢀ

Reliability and Failure Rates

In formal recognition of this BHC has achieved the following

approvals for its quality systems:

The reliability of a component can be defined as the

probability that it will perform satisfactorily under a given

set of conditions for a given length of timeꢀ In order to

calculate the reliability for a component the failure rate will

need to be usedꢀ

The site was originally approved in late 1981 to the CECC

quality system and has held the approval ever sinceꢀ The

approval is based upon the requirements of CECC 00 100 and

CECC 00 114 part 1ꢀ

Failure rates for BHC components have been established as a

result of many years of routine endurance testingꢀ Most of

these tests are carried out at rated temperature with full

rated voltage and ripple current appliedꢀ Extensive analysis

of this data has enabled failure rates to be established for

most product ranges with a 60% confidence levelꢀ

In March 1991 the site was also

approved to BS 5750 part 1 which

has now been harmonised in the

European community as EN 9001ꢀ

This standard is the most

comprehensive of the series and is

the Model for quality assurance

in design,

Full details of the reliability and failure rates is included in

a technical article, TD002, in Aluminium Electrolytic

Capacitors - Application Notes, available from BHC&

development,

M/108/CECC/UK

production,

installation

and servicingꢀ It is also known

as BS EN ISO 9001ꢀ Additionally

certain ranges in the motor

start capacitors are approved to

VDE 560ꢀ

The benefits of the total quality

philosophy and systems that BHC

have adopted are evident in the

service it providesꢀ One of the key

concepts underpinning operations

FM 11885

management is optimum batch

size which strikes the perfect

balance between

manufacturing throughput

efficiency and traceabilityꢀ The

customer benefits from this with

the availability

0019/M/IECQ/UK

of the most

cost competitive order quantities and

price, combined with maximum

flexibility in tailoring the product

to their needs, and enhanced

traceability for individual

capacitorsꢀ

560 PART 8

560 PART 22

15

series

Listed here are only samples of the

range of Screw Terminal Capacitors

we can produce$

Electrical characteristics and case

size are just two parameters that

can be optimised by our design

engineers to achieve the exact

product you require$ Please

contact our sales office for more

details$

ALS34/35 Series

Applications:

The ALS34/35 series of screw terminal capacitors meets the

requirements of the North American marketꢀ This range

offers high CV per unit volume coupled with high ripple

currents and long life performanceꢀ

● Industrial and commercial applicationsꢀ

● Power supplies including switch modeꢀ

● UPS systemsꢀ

● Variable speed drivesꢀ

● Frequency Invertersꢀ

Features:

● Welding equipmentꢀ

● Imperial and metric terminalsꢀ The default range

features 10-32 UNF class 2B terminals (style H)ꢀ

● Imperial and metric case sizesꢀ

● Tolerance 10% +30%ꢀ

● 20000 hours life with U_Rand I_Rapplied at 85°Cꢀ

● Low EꢀSꢀRꢀ

● Energy storage in pulse discharge applicationsꢀ

Capacitance

150µF to 680,000µF

-10% +30%

Range

Capacitance

Tolerance

● High reliabilityꢀ

Voltage

Range

Temperature

range

16V to 500V dꢀcꢀ

-40°C to +85°C

Case sizes

ø1ꢀ375" x 2ꢀ125" (ø35mm x 54mm) to

ø3" x 8ꢀ625" (ø76mm x 220mm)

Note: ø3ꢀ5" (91mm) size available on requestꢀ

16

case sizes

Terminations

Fig! 1 - Terminal Styles A², B, C, D, E, F, G, H, J, K, L, M

Aluminium inserts with 10-32 UNF Class2B or M5 threads,

maxꢀ torque 2NMꢀ ¼-28 UNF Class2B or M6 theaded inserts

have a maxꢀ torque 4NMꢀ Max torque for stud mounting

M8:4NM and M12:8NMꢀ

S

Safety Vent

V

DT

Terminal availability mm (inches)

TD

Terminal

Case Diameter ø

“+” SIGN

Style 35 (1ꢀ375)

51 (2)

63ꢀ5 (2ꢀ5)

76 (3)

Fig! 2 - Terminal Style A¹, R

A¹

S

A²

B

C

D

E

Safety Vent

V

DT

TD

F

“+” SIGN

G

H

J

Z = 13mm (R terminal)

or 10mm (A¹terminal)

S

ALS34

K

L

M

R

T (measured

from deck

surface)

Lt

L

Deck dimensions mm (inches)

Case Diameter

35 (1ꢀ375)

51 (2)

63ꢀ5 (2ꢀ5)

76 (3)

V

S ±0ꢀ5 (0ꢀ019)

12ꢀ8 (0ꢀ5)

22ꢀ2 (0ꢀ875)

28ꢀ5 (1ꢀ125)

31ꢀ8 (1ꢀ25)

8 (0ꢀ315)

ØD

13ꢀ7 (0ꢀ539)

15ꢀ8 (0ꢀ622)

19 (0ꢀ748)

ALS35

H

Terminal options

M

Insulating Disk

(preferred options shown in bold)

Terminal

Thread

Style

Height - T Diameter - DT Height - T Diameter - DT Thread depth - TD Drawing

mm

±0ꢀ8

5.5

mm

±0ꢀ5

13

8

inches

±0ꢀ031

0.217

0.281

0ꢀ281

0ꢀ217

0ꢀ125

0ꢀ250

0ꢀ093

0ꢀ250

0.281

0ꢀ125

0ꢀ281

0ꢀ093

0ꢀ281

0ꢀ217

inches

±0ꢀ019

0.512

0.315

0ꢀ512

0ꢀ670

0ꢀ315

0ꢀ670

0.315

0ꢀ670

0ꢀ512

0ꢀ315

0ꢀ590

mm / (inches)

minimum

A¹

A²

B

C

D

E

F

G

H

J

K

L

M

M5

M6

10 / (0ꢀ394")

8ꢀ8 / (0ꢀ346")

11ꢀ8 / (0ꢀ465")

5ꢀ5 / (0ꢀ216")

11ꢀ8 / (0ꢀ465")

10 / (0ꢀ394")

8ꢀ8 / (0ꢀ346")

10 / (0ꢀ394")

5ꢀ5 / (0ꢀ216")

10 / (0ꢀ394")

Figꢀ2

Figꢀ1

Figꢀ 2

7.14

7ꢀ14

5ꢀ5

13

17

8

17

8

17

13

8

1/4-28 UNF class 2B

3ꢀ17

6ꢀ35

2ꢀ36

6ꢀ35

7.14

3ꢀ17

7ꢀ14

2ꢀ36

7ꢀ14

5ꢀ5

M5

M6

10-32 UNF class 2B

M6

10-32 UNF class 2B

M5

8

15

R (note 1)

Case Polarity - due to the presence of electrolyte in the

capacitor the aluminium can and stud mounting will

essentially be at the same potential as the negative

terminalꢀ BHC therefore recommends that the stud and can

are insulated (see accessories for insulating nuts)ꢀ

17

case sizes & technical data

DIMENSIONS mm

CASE

D

L

LT

S

T

M

H

MOUNTING

CLIP

WEIGHT

grams

CODE unsleeved sleeved unsleeved sleeved sleeved

THREAD

±0ꢀ8

34ꢀ9

50ꢀ8

63ꢀ5

76ꢀ2

±0ꢀ8

35ꢀ3

51ꢀ2

63ꢀ9

76ꢀ6

±1ꢀ6

54ꢀ0

±1ꢀ6

55ꢀ1

±1

±0ꢀ5

12ꢀ8

22ꢀ2

28ꢀ5

31ꢀ8

±0ꢀ8

7ꢀ14

±1

12

16

D2C

D2L

D3C

D3L

D4C

D4L

D5C

D5L

K2C

K2L

K3C

K3L

K4C

K4L

K5C

K5L

L3C

L3L

L4C

L4L

L5C

L5L

N3L

N4C

N4L

N5C

N5L

N5R

N6L

N7L

N8L

61ꢀ5

M8

V3/H2/UTE2736

V4/UTE2737

V8

80

95

66ꢀ7

67ꢀ8

74ꢀ5

79ꢀ4

92ꢀ1

80ꢀ5

93ꢀ2

87ꢀ5

M8

115

130

150

165

185

205

165

200

240

275

315

350

385

425

370

430

485

545

600

660

615

700

780

865

950

990

1115

1280

1450

100ꢀ5

112ꢀ5

125ꢀ5

138ꢀ5

151ꢀ5

61ꢀ5

M8

104ꢀ8

117ꢀ5

130ꢀ2

142ꢀ9

54ꢀ0

105ꢀ9

118ꢀ6

131ꢀ3

144ꢀ0

55ꢀ1

M8

M12

66ꢀ7

67ꢀ8

74ꢀ5

87ꢀ5

79ꢀ4

80ꢀ5

92ꢀ1

93ꢀ2

100ꢀ5

112ꢀ5

125ꢀ5

137ꢀ5

151ꢀ5

85ꢀ5

104ꢀ8

117ꢀ5

130ꢀ2

142ꢀ9

79ꢀ4

105ꢀ9

118ꢀ6

131ꢀ3

144ꢀ0

80ꢀ5

92ꢀ1

93ꢀ2

98ꢀ5

V8

104ꢀ8

117ꢀ5

130ꢀ2

142ꢀ9

92ꢀ1

105ꢀ9

118ꢀ6

131ꢀ3

144ꢀ0

93ꢀ2

111ꢀ5

124ꢀ5

136ꢀ5

149ꢀ5

98ꢀ5

V8

V11

104ꢀ8

117ꢀ5

130ꢀ2

142ꢀ9

149ꢀ2

168ꢀ3

193ꢀ7

219ꢀ1

105ꢀ9

118ꢀ6

131ꢀ3

144ꢀ0

150ꢀ4

169ꢀ4

194ꢀ8

220ꢀ2

111ꢀ5

124ꢀ5

136ꢀ5

149ꢀ5

155ꢀ5

174ꢀ5

199ꢀ5

225ꢀ5

V11

DIMENSIONS inches

CASE

D

L

LT

S

T

M

H

MOUNTING

CLIP

WEIGHT

ounces

CODE unsleeved sleeved unsleeved sleeved sleeved

THREAD

±0ꢀ031

1ꢀ39

±0ꢀ062

2ꢀ125

2ꢀ625

3ꢀ125

3ꢀ625

4ꢀ125

4ꢀ625

5ꢀ125

5ꢀ625

2ꢀ125

2ꢀ625

3ꢀ125

3ꢀ625

4ꢀ125

4ꢀ625

5ꢀ125

5ꢀ625

3ꢀ125

3ꢀ625

4ꢀ125

4ꢀ625

5ꢀ125

5ꢀ625

3ꢀ625

4ꢀ125

4ꢀ625

5ꢀ125

5ꢀ625

5ꢀ875

6ꢀ625

7ꢀ625

8ꢀ625

±0ꢀ062

2ꢀ17

2ꢀ67

3ꢀ17

3ꢀ67

4ꢀ17

4ꢀ67

5ꢀ17

5ꢀ67

2ꢀ17

2ꢀ67

3ꢀ17

3ꢀ67

4ꢀ17

4ꢀ67

5ꢀ17

5ꢀ67

3ꢀ17

3ꢀ67

4ꢀ17

4ꢀ67

5ꢀ17

5ꢀ67

3ꢀ67

4ꢀ17

4ꢀ67

5ꢀ17

5ꢀ67

5ꢀ92

6ꢀ67

7ꢀ67

8ꢀ67

±0ꢀ039 ±0ꢀ019

±0ꢀ031

0ꢀ281

±0ꢀ039

D2C

D2L

D3C

D3L

D4C

D4L

D5C

D5L

K2C

K2L

K3C

K3L

K4C

K4L

K5C

K5L

L3C

L3L

L4C

L4L

L5C

L5L

N3L

N4C

N4L

N5C

N5L

N5R

N6L

N7L

N8L

1ꢀ375

2ꢀ42

2ꢀ93

3ꢀ44

3ꢀ96

4ꢀ43

4ꢀ94

5ꢀ45

5ꢀ96

2ꢀ42

2ꢀ93

3ꢀ44

3ꢀ96

4ꢀ43

4ꢀ94

5ꢀ41

5ꢀ96

3ꢀ37

3ꢀ88

4ꢀ39

4ꢀ90

5ꢀ37

5ꢀ89

3ꢀ88

4ꢀ39

4ꢀ90

5ꢀ37

5ꢀ89

6ꢀ12

6ꢀ87

7ꢀ85

8ꢀ88

0ꢀ5

M8

0ꢀ472 V3/H2/UTE2736

2ꢀ8

3ꢀ3

1ꢀ375

1ꢀ39

1ꢀ375

1ꢀ39

0ꢀ5

M8

4ꢀ0

1ꢀ375

1ꢀ39

0ꢀ5

M8

4ꢀ6

1ꢀ375

1ꢀ39

0ꢀ5

M8

5ꢀ3

1ꢀ375

1ꢀ39

0ꢀ5

M8

5ꢀ8

1ꢀ375

1ꢀ39

0ꢀ5

M8

6ꢀ5

1ꢀ375

2

1ꢀ39

0ꢀ5

M8

7ꢀ2

2ꢀ015

2ꢀ515

3ꢀ015

0ꢀ875

1ꢀ125

1ꢀ25

M12

0ꢀ63

V4/UTE2737

5ꢀ8

2

V4/UTE2737

7ꢀ1

2

V4/UTE2737

8ꢀ5

2

V4/UTE2737

9ꢀ7

2

V4/UTE2737

11ꢀ1

12ꢀ3

13ꢀ6

15ꢀ0

13ꢀ1

15ꢀ2

17ꢀ1

19ꢀ2

21ꢀ2

23ꢀ3

21ꢀ7

24ꢀ7

27ꢀ5

30ꢀ5

33ꢀ5

34ꢀ9

39ꢀ3

45ꢀ2

51ꢀ1

2

V4/UTE2737

2

V4/UTE2737

2

V4/UTE2737

V8

2ꢀ5

3

V8

V11

3

18

technical data

TECHNICAL DATA


型号：	ALS35H473K2C016
厂家：	KEMET CORPORATION
描述：	Aluminum Electrolytic Capacitor, Polarized, Aluminum (wet), 16V, 30% +Tol, 10% -Tol, 47000uF, Chassis Mount, RADIAL LEADED 电容器
文件：	总32页 (文件大小：2588K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

ALS35H473K2C016 [KEMET]

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