WT04X472_JTL [WALSIN]

Small size and light weight;


型号：	WT04X472_JTL
厂家：	Walsin Technology
描述：	Small size and light weight
文件：	总7页 (文件大小：229K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Approval sheet

WT04X

±5%, Convex Type

10p8R Chip resistors network

Size 1206

*Contents in this sheet are subject to change without prior notice.

Page 1 of 7

ASC_WT04X_V14

Apr.2010

Approval sheet

FEATURE

1. Small size and light weight

2. Reduced size of final equipment

3. Lower surface mounted assembly costs

4. Higher component and equipment reliability

5. RoHS compliant and Lead free products

APPLICATION

•

Consumer electrical equipment

EDP, Computer application

DESCRIPTION

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

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

composition of the paste is adjusted to give the approximate resistance required and the value is trimmed to

within tolerance by laser cutting of this resistive layer.

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

ease of soldering the outer layer of these end terminations is Tin (Pb free) alloy.

Fig 1. Consctruction of a Chip-R network WT04X

Page 2 of 7

ASC_WT04X_V14

Apr.2010

Approval sheet

QUICK REFERENCE DATA

Item

Series No.

General Specification

WT04X(Convex type)

1206 (3216)

±5% (E24 series)

10Ω ~ 100KΩ

≤ ± 200 ppm/°C

1/16 W

Size

Resistance Tolerance

Resistance Range

TCR (ppm/°C)

Max. dissipation at T_amb=70°C

Max. Operation Voltage (DC or RMS)

Max. overload voltage

Climatic category

25V

50V

55/155/56

Note :

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.

DIMENSIONS(unit : mm)

WT04X

3.30 ± 0.20

1.60 ± 0.15

0.55 ± 0.10

0.64 ± 0.05

0.50 ± 0.05

0.40 ± 0.15

Page 3 of 7

ASC_WT04X_V14

Apr.2010

Approval sheet

MARKING

3-digits marking

Each resistor is marked with a three digits code on the protective coating to designate the nominal resistance

value. For values up to 9.1 the R is used as a decimal point. For values of 10.0 or greater the first 2 digits

apply to the resistance value and third indicate the number of zeros to follow.

Example

RESISTANCE

10Ω

12Ω

100Ω

6800Ω

47000Ω

100

120

101

682

473

3-digits marking

FUNCTIONAL DESCRIPTION

Product characterization

Standard values of nominal resistance are taken from the E24 series for resistors with a tolerance of ±5%,

The values of the E24 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

Circuit Mode

R1=R2=R3=R4=R6=R7=R8=R9

Page 4 of 7

ASC_WT04X_V14

Apr.2010

Approval sheet

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.

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. 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.

Fig 3. Infrared soldering profile for Chip Resistors network

CATALOGUE NUMBERS

The resistors have a catalogue number starting with .

WT04

472_

Resistance code

Size code

Type code

Tolerance

J : ±5%

Packaging code

T : 7” Reel taping

Termination code

WT04 : 0402

per element

X : 8 elements,

convex

E24 : 2 significant digits followed

by no. of zeros and a blank

= Sn base (lead

free)

terminations,

common pin

p5/p10

4.7Ω

=4R7_

=100_

=221_

=000_

10Ω

220Ω

Jumper

(“_” means a blank)

Reeled tape packaging

: 8mm width paper taping 5000pcs per reel.

Page 5 of 7

ASC_WT04X_V14

Apr.2010

Approval sheet

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

TEST

DC resistance

Clause 4.5

PROCEDURE

REQUIREMENT

DC resistance values measured at the test voltages specified Within the specified tolerance

below :

<10Ω@0.1V,

<10KΩ@3V,

<100Ω@0.3V,

<1KΩ@1.0V,

<100KΩ@10V, <1MΩ@25V, <10MΩ@30V

Temperature

Natural resistance change per change in degree centigrade.

Refer to

Coefficient of

Resistance(T.C.R)

“QUICK REFERENCE DATA”

R₂− R

×10⁶(ppm/°C) t₁: 20°C+5°C-1°C

(

t₂− t₁

)

Clause 4.8

R₁: Resistance at reference temperature

R₂: Resistance at test temperature

∆R/R max. ±(2%+0.10Ω)

Short time overload

(S.T.O.L)

Clause 4.13

Permanent resistance change after a 5second application of a

voltage 2.5 times RCWV or the maximum overload voltage

specified in the above list, whichever is less.

Resistance to

soldering heat(R.S.H)

Un-mounted chips completely immersed for 10±1second in a

SAC solder bath at 260℃±5ºC

no visible damage

∆ R/R max. ±(1.0%+0.05Ω)

Clause 4.18

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

Solderability

SAC solder bath at 235℃±5℃

no visible damage

Clause 4.17

Temperature cycling

Clause 4.19

30 minutes at -55°C±3°C, 2~3 minutes at 20°C+5°C-1°C, 30 no visible damage

minutes at +155°C±3°C, 2~3 minutes at 20°C+5°C-1°C, total 5

∆R/R max. ±(1%+0.05Ω)

continuous cycles

1000 +48/-0 hours, loaded with RCWV or Vmax in chamber

controller 70±2ºC, 1.5 hours on and 0.5 hours off

Load life (endurance)

10Ω ~ 1MΩ : ∆R/R max.

±(3%+0.1Ω)

Clause 4.25

R<10Ω, R≥1MΩ : ∆R/R max.

±(5%+0.1Ω)

1000 +48/-0 hours, loaded with RCWV or Vmax in humidity

chamber controller at 40°C±2°C and 90~95% relative humidity,

1.5hours on and 0.5 hours off

Load life in Humidity

10Ω ~ 1MΩ : ∆R/R max.

±(3%+0.1Ω)

Clause 4.24

R<10Ω, R≥1MΩ : ∆R/R max.

±(5%+0.1Ω)

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

Adhesion

No remarkable damage or

removal of the terminations

Clause 4.32

Insulation Resistance

R≧10GΩ

Apply the maximum overload voltage (DC) for 1minute

Apply the maximum overload voltage (AC) for 1 minute

Clause 4.6

Dielectric Withstand

No breakdown or flashover

Voltage

Clause 4.7

Page 6 of 7

ASC_WT04X_V14

Apr.2010

Approval sheet

PACKAGING

Paper Tape specifications (unit :mm)

Series No.

WT04X

3.45 +0.20/-0

1.85 +0.20/-0

3.50±0.20

8.00±0.30

1.75±0.10

Series No.

ΦD

+0.1

−0.0

4.00±0.10

0.85±0.05

WT04X

Φ1.50

Reel dimensions

Symbol

(unit : mm)

13.0±0.2

9.0±0.5

Φ178.0±2.0

Φ60.0±1.0

Page 7 of 7

ASC_WT04X_V14

Apr.2010

WT04X472_JTL [WALSIN]

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