WK04K820RDAL [WALSIN]

SMD Thick film resistor;


型号：	WK04K820RDAL
厂家：	Walsin Technology
描述：	SMD Thick film resistor
文件：	总7页 (文件大小：205K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

WK12K, WK08K, WK06K, WK04K, WK02K

±1.0%, ±0.5%

Thick Film TC50/TC100

High Precision Thick Film chip resistors

Size 1206, 0805, 0603, 0402, 0201

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FEATURE

1. SMD Thick film resistor

2. High reliability and stability

3. High performance of TCR: 50 ppm/K

4. High precision

5. RoHS compliant & Lead free

APPLICATION

•

Medical equipment

Measuring instrument

Communication device

Computer

Printer

DESCRIPTION

The resistors are constructed in a high grade ceramic body (aluminum oxide). Internal metal electrodes are

added at each end and connected by a resistive layer that is applied to the top surface of the substrate. The

composition of the resistive layer is adjusted to give the approximate resistance required and the value is

trimmed to nominated value within tolerance which controlled by laser trimming of this resistive layer.

The resistive layer is covered with a protective coat. Finally, the two external end terminations are added. For

environmental soldering issue, the outer layer of these end terminations is a Lead-free solder .

Fig 1. Construction of Chip-R WKxxK

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QUICK REFERENCE DATA

Item

General Specification

WK06K

Series No.

WK12K

WK08K

WK04K

WK02K

Size code

1206 ( 3216 )

0805 ( 2012 )

0603 ( 1608 )

0402 ( 1005 )

0201 ( 0603 )

Resistance Tolerance

±1.0%, ±0.5% ( E24 +E96 )

3.3 ~ 9.76Ω: 100ppm

Resistance Range/

TCR (ppm/°C)

3.3 ~ 9.76Ω:

50ppm

3.3 ~ 9.76Ω:

50ppm

10 ~ 97.6Ω:

51 ~ 976Ω:

100ppm

10 ~ 97.6Ω: 100ppm

10Ω ~ 4.7MΩ:

50ppm-

10Ω ~ 3.3MΩ:

50ppm

100Ω ~ 1MΩ:

1KΩ ~ 1MΩ:

100Ω ~ 1MΩ: 50ppm

1.02~3.3MΩ: 100ppm

50ppm

1.02~3.3MΩ:

100ppm

Max. dissipation at

T_amb=70°C

1/4W

200V

400V

1/8W

150V

300V

1/10W

50V

1/16W

50V

1/20W

25V

Max. Operation

Voltage (DC or RMS)

Max. Overload Voltage

(DC or RMS)

100V

50V

Climatic category

Note :

55/125/56

This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication

60115-8”

Max. Operation Voltage : So called RCWV (Rated Continuous Working Voltage) is determined by

RCWV = RatedPower ×Resistance Value or Max. RCWV listed above, whichever is lower.

Green color overcoat.

DIMENSION (unit : mm)

WK12K

WK08K

WK06K

WK04K

WK02K

Type

3.20 ± 0.15

1.60 ± 0.15

0.60 ± 0.10

0.50 ± 0.25

2.00 ± 0.10

1.25 ± 0.10

0.60 ± 0.10

0.40 ± 0.20

1.60 ± 0.10

1.00 ± 0.05

0.50 ± 0.05

0.60 ± 0.03

0.30 ± 0.03

0.23 ± 0.03

0.10 ± 0.05

0.15 ± 0.05

0.80 +0.15/-0.05

0.45 ± 0.10

0.25 ± 0.10

0.30 ± 0.10

0.35 ± 0.05

0.20 ± 0.10

0.25 +0.05/-0.10

Protective coat

End termination

Resistive layer

Ceramic Substrate

101

1001

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MARKING

Each resistor is marked with 3 digits for E24 and 4 digits for E96 on the protective coating to designate the

nominal resistance value of E24 and E96.

0603 size has only marking with 3 digits for E24 and no marking for E96 !

0402/ 0201 size has no marking !

Example

RESISTANCE

MARKING

100Ω

562KΩ

51.1Ω

101

5623

51R1

ꢀ

No marking code for 0402/ 0201 size

FUNCTIONAL DESCRIPTION

Product characterization

Standard values of nominal resistance are taken from the E24 & E96 series for resistors with a tolerance of

±1.0%, ±0.5%. The values of the E24/E96 series are in accordance with “IEC publication 60063”.

Derating

The power that the resistor can dissipate depends on the operating temperature; see Fig.2

Figure 2. Maximum dissipation in percentage of rated power

As a function of the ambient temperature

MOUNTING

Due to their rectangular shapes and small tolerances, Surface Mountable Resistors are suitable for handling by

automatic placement systems.

Chip placement can be on ceramic substrates and printed-circuit boards (PCBs).

Electrical connection to the circuit is by individual soldering condition.

The end terminations guarantee a reliable contact.

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SOLDERING CONDITION

The robust construction of chip resistors allows them to be completely immersed in a solder bath of 260°C for 10

seconds. Therefore, it is possible to mount Surface Mount Resistors on one side of a PCB and other discrete

components on the reverse (mixed PCBs).

Surface Mount Resistors are tested for solderability at 235°C during 2 seconds within lead-free solder bath. The

test condition for no leaching is 260°C for 30 seconds. Typical examples of soldering processes that provide

reliable joints without any damage are given in Fig 3.

CATALOGUE NUMBERS

The resistors have a catalogue number starting with .

WK12

Size code

4990

Resistance code

E24+E96:

Type code

Tolerance

F : ±1.0%

D : ±0.5%

Packaging code Termination

code

WK12: 1206

WK08: 0805

WK06: 0603

WK04: 0402

WK02: 0201

TCR

T : 7” Reeled

50ppm/100ppm

L : lead free

First 3 significant digits

represent resistance code

and followed by number of

zero.

A : 7” Reeled

15kpcs

E24: 39R0=>39R0

820R =>8200

E96: 49R9 =>49R9

499R =>4990

1. Reeled tape packaging: 8mm width paper taping.

5,000pcs/reel for WK12, WK08, WK06;

10,000pcs/reel for WK04,

15,000pcs/reel for WK02

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TEST AND REQUIREMENTS(JIS C 5201-1 : 1998)

REQUIREMENT

Resistor

TEST

PROCEDURE

DC resistance

DC resistance values measured

Within the specified tolerance

Clause 4.5

<10Ω@0.1V, <100Ω@0.3V, <1KΩ@1.0V,

<10KΩ@3V, <100KΩ@10V,<1MΩ@25V,

<10MΩ@30V

Temperature

Coefficient of

Natural resistance change per change in degree Refer to “QUICK REFERENCE DATA”

centigrade.

Resistance(T.C.R)

R₂− R

×10⁶(ppm/°C)

Clause 4.8

(

t₂− t₁

)

R₁: Resistance at reference temperature

R₂: Resistance at test temperature

t₁: 20°C+5°C-1°C

Short time overload

(S.T.O.L)

Permanent resistance change after a 2 second

application of a voltage 2.5 times RCWV or the

maximum overload voltage specified in the above

list, whichever is less.

∆R/R max. ±(1.0%+0.05Ω)

Clause 4.13

Resistance to soldering

heat(R.S.H)

Clause 4.18

Un-mounted chips completely immersed for no visible damage

10±1second in a SAC solder bath at 260℃±5ºC

∆ R/R max. ±(1.0%+0.05Ω)

Solderability

Un-mounted chips completely immersed for 2±0.5 good tinning (>95% covered)

second in a SAC solder bath at 235℃±5℃

Clause 4.17

no visible damage

Temperature cycling

no visible damage

30 minutes at -55°C±3°C, 2~3 minutes at

20°C+5°C-1°C, 30 minutes at +125 °C±3°C,

Clause 4.19

∆R/R max. ±(1.0%+0.05Ω)

2~3 minutes at 20°C+5°C-1°C, total

continuous cycles

Load life (endurance)

70±2ºC, 1000 hours, loaded with RCWV or

Vmax,1.5 hours on and 0.5 hours off

∆R/R max. ±(5.0%+0.1Ω)

No visual damage

Clause 4.25

Load life in Humidity

1000 hours, at rated continuous working voltage in

humidity chamber controller at 40°C±2°C and 95%

relative humidity, 1.5hours on and 0.5 hours off

∆R/R max. ±(5.0%+0.1Ω)

No visual damage

Clause 4.24

Endurance at high

temperature

∆R/R max. ±(5.0%+0.1Ω)

125°C, no load, 1000hours

No visual damage

Clause 4.25

Bending strength

Clause 4.33

Adhesion

Resistors mounted on a 90mm glass epoxy resin

PCB(FR4); bending : 3 mm, once for 10 seconds.

∆R/R max. ±(1.0%+0.05Ω)

Pressurizing force: 5N, Test time: 10±1sec.

No remarkable damage or removal of the

terminations.

Clause 4.32

Insulation Resistance

R≧1GΩ

Apply the maximum overload voltage (DC) for

1minute

Clause 4.6

Dielectric Withstand

Apply the maximum overload voltage (AC) for 1 No breakdown or flashover

minute

Voltage

Clause 4.7

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PACKAGING

Paper Tape specifications (unit :mm)

Series No.

WK12

3.60±0.20

2.50±0.20

1.90±0.20

1.15+0.05/-0.1

0.37±0.05

2.00±0.15

1.65±0.15

1.15±0.15

0.65±0.10

0.67±0.05

8.00±0.30

8.00±0.20

3.50±0.05

1.75±0.10

WK08

WK06

WK04

WK02

Series No.

WK12

ΦD

+0.1

4.00±0.10

Max. 1.0

Φ1.50

−0.0

+0.1

WK08

WK06

4.00±0.10

Max. 1.0

Max. 0.8

Φ1.50

−0.0

+0.1

−0.0

Φ1.50

+0.1

2.00±0.10

4.00±0.10

WK04

Max. 0.5

Φ1.50

−0.0

+0.1

−0.0

WK02

Φ1.50

Reel dimensions

Symbol

(unit : mm)

13.0±0.2

9.0+1/-0

Φ180+0/-1.5

Φ60.0+1/-0

Taping quantity

Chip resistors 5,000 pcs per reel ( WK12, WK08, WK06 )

Chip resistors 10,000 pcs per reel ( WK04 ); 15,000pcs per reel (WK02)

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WK04K820RDAL [WALSIN]

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