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WF08A4022FTLJ

更新时间：2025-06-12 09:50:23

品牌：WALSIN

描述：0805(2012), 40200Ω, ±1%, 1/2W

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WF08A4022FTLJ 概述

0805(2012), 40200Ω, ±1%, 1/2W

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Approval sheet

WF06A, WF08A, WF12A, WF10A, WF20A, WF25A

Jumper, 1 ~ 1Mohm, 5%, 1%

Thick Film Triple Power Chip Resistors

Size 0603 1/3W, 0805 1/2W, 1206 3/4W,

1210 3/4W, 2010 1.5W, 2512 3W

Automotive AEC Q-200 Qualified

RoHS 2 Compliant with exemption 7C-1

Halogen free

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

ASC_WFxxA_J_AUTO_V03 Jun – 2023

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Approval sheet

FEATURE

1. Small size and light weight

2. High reliability and stability

3. Reduced size of final equipment

4. High power

5. RoHS 2 Compliant with exemption 7C-1 and Halogen free products

6. Automotive AECQ-200 Qualified

APPLICATION



High accuracy dc-power supply

Digital multi-meter

Telecommunication

Computer

Automotive industry

Medical and military equipment

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 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

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

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

Fig 1. Construction of Chip-R

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Approval sheet

QUICK REFERENCE DATA

WF06A

WF08A

WF12A

WF10A

WF20A

WF25A

High Current Power Jumpers:

Max.

Type

Size

Description

Resistance

Rated Current Overload Current

12 A

6 A

Zero Ohm，Jumper

≦10mΩ

WF06A

WF08A

WF12A

WF10A

WF20A

WF25A

0603

0805

1206

1210

2010

2512

14 A

7 A

18 A

9 A

18 A

9 A

24 A

12 A

28 A

14 A

Note：

Max. rated/overload current and resistance listed above, TCR is not applicable of jumper

products, and keep the surface temperature do not exceed 105℃ when working.

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Approval sheet

DIMENSIONS (unit : mm)

Type

WF06A

WF08A

WF12A

WF10A

WF20A

WF25A

1.60  0.10

0.80  0.10

0.30  0.20

0.45  0.10

2.00  0.10

1.25  0.10

0.40  0.20

0.50  0.10

3.10  0.10

1.60  0.10

0.50  0.25

0.55  0.10

3.10  0.10

2.60  0.10

0.50  0.25

0.55  0.10

5.00  0.20

2.50  0.20

0.65  0.25

0.60  0.25

0.60  0.10

6.40  0.20

3.20  0.25

0.45  0.25

1.80  0.25

1.10  0.20

RECOMMENDED SOLDERING PAD DIMENSIONS:

WF06A

WF08A

WF12A

WF10A

WF20A

WF25A

MARKING

For E24 5%, 0603/0805/1206/1210/2010/2512 size, each resistor is marked with a three-digit code on

the protective coating to designate the nominal resistance value.

For E24 & E96 1%, 0805/1206/1210/2010/2512 size, each resistor is marked with a four-digit code on

the protective coating to designate the nominal resistance value.

Example:

For E24 5%

0603/0805/1206/1210/2010/2512

For E24 & E96 1%

0805/1206/1210/2010/2512

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Approval sheet

For Jumper, 0603/0805/1206/1210 size defines “ 000 ”, 2010/2512 size defines “ 0000 ”

For E24 & E96 1%, 0603 size, each resistor is marked with a three-digit code on the protective coating

to designate the nominal resistance value.

Example:

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Approval sheet

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Approval sheet

FUNCTIONAL DESCRIPTION

Product characterization

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

1%,5%. The values of the E96/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

STORAGE TEMPERATURE

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

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Approval sheet

CATALOGUE NUMBERS

The resistors have a catalogue number starting with.

WF06

510_

Size code

Type code

Resistance code

5% E24:

Tolerance

Packaging code

Termination Special code

code

WF06: 0603

WF08: 0805

WF12: 1206

WF10: 1210

WF20: 2010

WF25: 2512

A : Triple Power

0603 = 1/3W

0805 = 1/2W

1206 = 3/4W

1210 = 3/4W

2010 = 1.5W

2512 = 3W

: 7” Reeled

= AECQ-200

J : 5%

taping

= Sn base

qualified

2 significant digits followed

by No. of zeros a

blank

: 1%

Z: 7” Reeled taping (lead free)

(WF25A)

: Jumper

e.g.:

3ohm

=3R0_

=100_

=563_

10ohm

56Kohm

(“_” means a blank)

1% E24+E96:

3 significant digits followed

by No. of zeros

100

=1000

=3742

37.4K



Reeled packaging

: WF06A, WF08A, WF12A WF10A 8mm width paper taping 5,000pcs per 7” reel.

WF20A 12mm width pc emboss taping 4,000pcs per 7” reel.



WF25A 12mm width pc emboss taping 3,000pcs per 7” reel.

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TEST AND REQUIREMENTS

Basic Specification: AEC Q-200; IEC-60115

REQUIREMENT

TEST

PROCEDURE

Clause 4.8

Natural resistance change per change in degree Refer to quick reference data for T.C.R

centigrade.

specification

Temperature Coefficient

of Resistance (TCR )

R₂ R

10⁶(ppm/C)

₁t₂ t₁

R₁: Resistance at reference temperature

R₂: Resistance at test temperature

t₁: 25℃+1℃-1℃.

AEC-Q200 TABLE 7.3

High Temperature

Exposure

1000 hrs. @ T=155℃. Unpowered.

No visible damage

R/R max. :≦±(1%+0.05)

Jumper : ≦10m

Measurement at 24 ±2 hours after test conclusion.

AEC-Q200 TABLE 7.4

Temperature cycling

1000 Cycles (-55°C to +155°C).

No visible damage

Measurement at 24±2 hours after test conclusion.

R/R max. :≦±(0.5%+0.05)

Jumper : ≦10m

AEC-Q200 TABLE 7.

Test 65 ℃ /80~100%RH/10Cycles.

Measurement at 24±2 hours after test conclusion.

(t=24hrs/cycle).

No visible damage

Moisture Resistance

R/R max. :≦±(0.5%+0.05)

Jumper : ≦10m

AEC-Q200 TABLE 7.7

Bias Humidity

1000 hours 85 ℃ /85%RH.

No visible damage

R/R max. :≦±(1%+0.05)

Jumper : ≦10m

10% of operating power.

Measurement at 24 ±2 hours after test conclusion.

AEC-Q200 TABLE 7.8

Operation life

(endurance)

Test 1000hr @ TA=125 ℃

power. Measurement at 24±2 hours after test

conclusion.

at specified rated No visible damage

R/R max. :≦±(1%+0.05)

Jumper : ≦10m

AEC-Q200 TABLE 7.9

External Visual

Inspect device construction, marking and

workmanship.

No visual damage and refer marking

code.

AEC-Q200 TABLE 7.10

Physical Dimension

AEC-Q200 TABLE 7.13

Mechanical shock

Verify physical dimensions to the applicable device

detail specification.

Within the spec.

Test Peak value:100g's,Wave:Hail-sine,

Duration:6ms,Velocity:12.3ft/sec.

Within product specification

tolerance and no visible

damage.

AEC-Q200 TABLE 7.14

5 g's for 20 min., 12 cycles each of 3 orientations.

Test from 10-2000 Hz.

No visible damage

Vibration

R/R max. :≦±(1%+0.05)

Jumper : ≦10m

AEC-Q200 TABLE 7.15

Resistance to soldering

heat (R.S.H)

Un-mounted chips completely immersed for No visible damage

10±1second in a SAC solder bath at 270℃±5ºC.

R/R max. :≦ ±(0.5%+0.05)

Jumper : ≦10m

AEC-Q200 TABLE 7.16

-55 to 155 ℃ / dwell time 15min/ Max transfer time No visible damage

Thermal shock

R/R max. :≦±(0.5%+0.05)

Jumper : ≦10m

20sec/ 300cycles.

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Approval sheet

AEC-Q200-002

Test contact min. 1KV.

No visible damage

ESD

R/R max. :≦±(1%+0.1)

Jumper : ≦10m

AEC-Q200 TABLE 7.18

Solderability

a)Baking 155℃ 4H, dipping 235℃ 5s

b)Steam 8H, dipping 215℃ 5s

c)Steam 8H, dipping 260℃ 7s.

Good tinning (>95% covered)

No visible damage

AEC-Q200 TABLE 7.20

UL-94 V-0 or V-1 are acceptable

Refer UL-94.

Flammability

No visible damage

AEC-Q200 TABLE 7.21

Board flex

Resistors mounted on a 90mm glass epoxy resin

PCB(FR4); bending 2mm 2512.2010.1210.1206,

R/R max. :≦±(0.5%+0.05)

Jumper : ≦10m

3mm 0805.0603.

AEC-Q200 TABLE 7.22

Force 1.8 Kg for 60 seconds.

No mechanical damage

Terminal strength

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Approval sheet

PACKAGING

Tape specifications (unit :mm)

Series No.

WF06A

WF08A

WF12A

WF10A

WF20A

WF25A

1.90±0.20

2.40±0.20

3.60±0.20

5.50±0.20

6.70±0.20

1.10±0.20

1.65±0.20

2.00±0.20

3.00±0.20

2.80±0.20

3.50±0.20

8.00±0.30

12.00±0.30

3.50±0.05

5.50±0.05

1.75±0.10

Series No.

WF06A

D

0.1

4.00±0.10

Max. 0.80

1.50

0.0

0.1

WF08A

WF12A

WF10A

WF20A

WF25A

4.00±0.10

Max. 1.00

Max. 1.50

1.50

0.0

0.1

0.0

1.50

0.1

0.0

1.50

0.1

0.0

1.50

0.1

0.0

1.50

Reel dimensions

unit: mm

Symbol

7” 8mm tape

13.0±0.2

13.0±0.5

9.0+1/-0

178.0±2.0

60.0±1.0

7” 12mm tape

13.8±1.5

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