WR20W1000FTLJ [WALSIN]

Automotive grade AEC Q-200 compliant;


型号：	WR20W1000FTLJ
厂家：	Walsin Technology
描述：	Automotive grade AEC Q-200 compliant
文件：	总7页 (文件大小：244K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

WR20, WR25

±1%, ±5%

General purpose chip resistors

Size 2010, 2512

( Automotive )

Page 1 of 7

WR20, WR25 ( Automotive )_V02

Jan.2011

FEATURE

1. Automotive grade AEC Q-200 compliant

2. 100% CCD inspection

3. RoHS compliant and Lead free products

APPLICATION

•

Automotive application

Consumer electrical equipment

EDP, Computer application

Telecom application

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

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 a Tin (lead free) alloy.

Fig 1. Construction of 2512, 2010 Chip-R

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WR20, WR25 ( Automotive )_V02

Jan.2011

QUICK REFERENCE DATA

Item

General Specification

Series No.

WR20

WR25

Size code

2010 ( 5025 ),

2512(6432)

Resistance Tolerance

Resistance Range

±5% (E24); ±1% (E24+E96)

1Ω ~ 10MΩ, Jumper (0Ω)

TCR (ppm/°C)

R≦ 10Ω

± 200 ppm/°C

± 100 ppm/°C

± 200 ppm/°C

± 100 ppm/°C

± 200 ppm/°C

0.5 W

10Ω < R ≦1MΩ

> 1MΩ

Max. dissipation at T_amb=70°C

Max. Operation Voltage (DC or RMS)

Max. Overload Voltage (DC or RMS)

Climatic category (IEC 60068)

200V

250V

400V

500V

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

or Max. RCWV listed above, whichever is lower.

RCWV = RatedPower×ResistanceValue

The resistance of Jumper is defined <0.05Ω.

DIMENSIONS (unit : mm)

TYPE

WR20

WR25

5.00±0.20

2.50±0.20

0.55±0.10

0.65±0.25

0.60±0.25

6.40±0.20

3.20±0.20

0.60±0.10

0.65±0.25

0.90±0.25

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WR20, WR25 ( Automotive )_V02

Jan.2011

MARKING

Size

±5%

±1%

2512, 2010

4-digits marking

FUNCTIONAL DESCRIPTION

Product characterization

Standard values of nominal resistance are taken from the E96 & E24 series for resistors with a tolerance of ±5%

& ±1%. The values of the E24/E96 series are in accordance with “IEC publication 60063”.

Derating curve

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

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

Page 4 of 7

WR20, WR25 ( Automotive )_V02

Jan.2011

CATALOGUE NUMBERS

The resistors have a catalogue number starting with .

WR25

472_

Size code

Type code

X :

Resistance code

Tolerance

F : ±1%

Packaging code

Termination

code

Special code

WR25 : 2512

WR20 : 2010

5%, E24: 2 significant digits

followed by no. of zeros

: 7” Reeled taping

: 10” Reeled taping

: 13” Reeled taping

: Bulk

= Automotive grade

and Anti-Sulfuration

10ppm x 240hrs

= Sn base

±5%, 1R ~ 10MR

±1%, 10R ~ 1MR

W :

J : ±5%

(lead free)

100Ω = 101_

10KΩ = 103

P : Jumper

1%, E24+E96: 3 significant

digits followed by no. of

zeros

±1%,< 10R; > 1MR

100Ω

=1000

=3742

37.4KΩ

TEST AND REQUIREMENTS

Essentially all tests are carried out according to the schedule of IEC publication 115-8, category

LCT/UCT/56(rated temperature range : Lower Category Temperature, Upper Category Temperature; damp

heat, long term, 56 days). The testing also meets the requirements specified by EIA, EIAJ and JIS.

The tests are carried out in accordance with IEC publication 68, "Recommended basic climatic and mechanical

robustness testing procedure for electronic components" and under standard atmospheric conditions according

to IEC 60068-1, subclause 5.3. Unless otherwise specified, the following value supplied :

Temperature: 15°C to 35°C.

Relative humidity: 45% to 75%.

Air pressure: 86kPa to 106 kPa (860 mbar to 1060 mbar).

All soldering tests are performed with midly activated flux.

REQUIREMENT

TEST

PROCEDURE / TEST METHOD

Resistor

Within the specified tolerance

Refer to “QUICK REFERENCE

DATA”

0Ω

Electrical Characteristics

DC resistance values measurement

Temperature Coefficient of Resistance (T.C.R)

Natural resistance change per change in degree centigrade.

JISC5201-1: 1998

Clause 4.8

<50mΩ

R₂− R

×10⁶(ppm/°C) t₁: 20°C+5°C-1°C

(

t₂− t₁

)

R₁: Resistance at reference temperature

R₂: Resistance at test temperature

ΔR/R max. ±(1.0%+0.05Ω)

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

SAC solder bath at 270℃±5ºC

Resistance to soldering

heat(R.S.H)

no visible damage

<50mΩ

MIL-STD-202

method 210

a) Bake the sample for 155℃ dwell time 4hrs/ solder dipping

235℃/ 5sec.

Solderability

95% coverage min., good tinning and no

visible damage

J-STD-002

b) Steam the sample dwell time 1 hour/ solder dipping

260℃/ 7sec.

1000 cycles, -55℃ ~ +155℃, dwell time 5~10min

∆R/R max. ±(1.0%+0.05Ω)

Temperature cycling

JESD22

<50mΩ

No visible damage

Method JA-104

Page 5 of 7

WR20, WR25 ( Automotive )_V02

Jan.2011

REQUIREMENT

Resistor

TEST

PROCEDURE / TEST METHOD

0Ω

∆R/R max. ±(1.0%+0.05Ω)

No visible damage

Moisture Resistance

MIL-STD-202

65±2°C, 80~100% RH, 10 cycles, 24 hours/ cycle

<50mΩ

method 106

1000+48/-0 hours; 85°C, 85% RH, 10% of operation power

1000+48/-0 hours; 35% of operation power, 125±2°C

∆R/R max. ±(2.0%+0.10Ω)

Bias Humidity

MIL-STD-202

method 103

No visible damage

<50mΩ

Operational Life

MIL-STD-202

method 108

∆R/R max. ±(2.0%+0.1Ω)

No visible damage

High Temperature

Exposure

1000+48/-0 hours; without load in a temperature chamber

∆R/R max. ±(2.0%+0.10Ω)

controlled 155±3°C

No visible damage

<50mΩ

MIL-STD-202

Method 108

Board Flex

Resistors mounted on

90mm glass epoxy resin ∆R/R max. ±(1.0%+0.05Ω)

AEC-Q200-005

Terminal strength

AEC-Q200-006

Thermal shock

MIL-STD-202

method 107

PCB(FR4),bending once 2mm for 10sec.

Pressurizing force: 1Kg, Test time: 60±1sec.

No visible damage

No remarkable damage or

removal of the terminations

Test –55 to 155℃/ dwell time 15min/ Max transfer time ∆R/R max. ±(1.0%+0.05Ω)

20sec 300cycles

No visible damage

<50mΩ

ESD

Test contact 1.0KV

∆R/R max. ±(1.0%+0.05Ω)

No visible damage

AEC-Q200-002

Short Time Overload

JISC5201-1: 1998

Clause 4.13

2.5 times RCWV or max. overload voltage, for 5seconds

∆R/R max. ±(2.0%+0.10Ω)

No visible damage

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

JISC5201-1: 1998

Clause 4.24

∆R/R max. ±(2%+0.10Ω)

No visible damage

<50mΩ

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)

JISC5201-1: 1998

Clause 4.25

∆R/R max. ±(2%+0.10Ω)

No visible damage

TEST CONDITION FOR JUMPER (0 Ω)

Type

Power Rating At 70C

Resistance

WR20X

WR25X

1 W

1/2 W

Max. 50mR

Rated Current

3.2 A

8 A

4.5 A

11 A

Peak Current

Operating Temperature

-55C ~ 155C

Page 6 of 7

WR20, WR25 ( Automotive )_V02

Jan.2011

PACKAGING

Plastic Tape specifications (unit :mm)

Type

WR20

WR25

5.50±0.20

6.90±0.20

2.80±0.20

3.60±0.20

12.00±0.30

5.50±0.10

1.75±0.10

Type

WR20

WR25

ΦD

+0.1

4.00±0.10

MAX1.2

Φ1.50

−0.0

Reel dimensions

Symbol

(unit : mm)

13.0±0.2

14.0±0.2

Φ178.0±2.0

Φ60.0±1.0

Taping quantity

WR20, WR25 by plastic tape taping 4,000 pcs per reel.

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WR20, WR25 ( Automotive )_V02

Jan.2011

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