WR12W1020PAL [WALSIN]

Thick Film General Purpose Chip Resistors;


型号：	WR12W1020PAL
厂家：	Walsin Technology
描述：	Thick Film General Purpose Chip Resistors
文件：	总10页 (文件大小：531K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Approval sheet

WR12, WR08, WR06, WR04

1%, 5%

Thick Film General Purpose Chip Resistors

Size 1206, 0805, 0603, 0402

RoHS 2 compliant & Halogen free

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

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Approval sheet

FEATURE

1. High reliability and stability

2. Reduced size of final equipment

3. Lower assembly costs

4. Higher component and equipment reliability

5. RoHS 2 compliant and Halogen free products

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 Chip-R

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ASC_WR_V24

SEP 2016

Approval sheet

QUICK REFERENCE DATA

Item

General Specification

Series No.

Size code

WR12

WR08

0805(2012)

WR06

WR04

1206(3216)

0603(1608)

0402(1005)

Resistance Range

1~10M (5% tolerance), Jumper

1~10M (1% tolerance),

Resistance Tolerance

1%

E96/E24

5%

1%

5%

1%

5%

1%

E96/E24

5%

E24

E96/E24

E24

E96/E24

E24

TCR (ppm/C)

10M R＞10

  100

-200~+400

R10

Max. dissipation

@ T_amb=70C

1/4 W

1/8 W

1/10 W

75V

1/16 W

Max. Operation

Voltage (DC or RMS)

200V

400V

150V

300V

50V

Max. Overload

Voltage (DC or RMS)

150V

100V

Climatic category

Note :

55/155/56

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

or Max. RCWV listed above, whichever is lower.

RCWV  RatedPowerResistance Value

The resistance of Jumper is defined <0.05.

DIMENSIONS (unit : mm)

WR12

WR08

WR06

WR04

3.10  0.10

1.60  0.10

0.60  0.15

0.45  0.20

0.50  0.20

2.00  0.10

1.25  0.10

0.50  0.15

0.40  0.20

1.60  0.10

0.80  0.10

0.45  0.15

0.30  0.15

0.30  0.10

1.00  0.05

0.50  0.05

0.35  0.05

0.25  0.10

0.20  0.10

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Approval sheet

MARKING

Size \ Nr. Of digit of code\tolerance

5%

1%

1206 (3216)

3-digits marking

4-digits marking

0805 (2012)

4-digits marking

3-digits marking

0603 (1608)

N0 MARKING

0402(1005)

3-digits marking（5% : 1206 & 0805 & 0603 ）

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

3-digits marking（1% : 0603）

Nominal resistance

1.E-24 series

Description

As 0603 WR06X 5%.

2.E-96 series

The 1st two digit codes are referring to the CODE on the table, the 3rd code is the index of resistance

value :

Y=10^-2，X=10^-1，A=10⁰，B=10¹，C=10²，D=10³，E=10⁴，F=10⁵

EX :

17.8Ω=25X，178Ω=25A，1K78 =25B

17K8=25C， 178K=25D， 1M78=25E

3. Remark

There is no marking for the items are not under E-24 and E-96 series

CODE R_value CODE R_value CODE R_Value CODE R_value CODE R_value CODE R_value CODE R_value CODE R_value

100

102

105

107

110

113

115

118

121

124

127

130

133

137

140

143

147

150

154

158

162

165

169

174

178

182

187

191

196

200

205

210

215

221

226

232

237

243

249

255

261

267

274

280

287

294

301

309

316

324

332

340

348

357

365

374

383

392

402

412

422

432

442

453

464

475

487

499

511

523

536

549

562

576

590

604

619

634

649

665

681

698

715

732

750

768

787

806

825

845

866

887

909

931

953

976

4-digits marking（1% : 1206/0805）

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

Example

RESISTANCE

10

12

100

6800

47000

100

120

101

682

473

3-digits marking（1206 & 0805 & 0603 5% ）

4-digits marking

10R0

12R0

1000

6801

4702

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FUNCTIONAL DESCRIPTION

Product characterization

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

and E96 series for resistors with a tolerance of 1%. 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 for WR12, WR08,

WR06, WR04

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.

Storage and Handling Conditions:

1. Products are recommended to be used up within two years since operation date as ensured shelf life. Check

solderability in case shelf life extension is needed.

2. To store products with following condition:

Temperature :5 to 40℃

Humidity

:20 to 70% relative humidity

3. Caution:

a.Don't store products in a corrosive environment such as sulfide, chloride gas, or acid.

It may cause oxdization of electrode, which easily be resulted in poor soldering

b.To store products on the shelf and avoid exposure to moisture.

c.Don't expose products to excessive shock, vibration, direct sunlight and so on

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SOLDERING CONDITION follows J-STD-020D

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

CATALOGUE NUMBERS

The resistors have a catalogue number starting with

WR12

Type code

X :

472_

Size code

Resistance code

Tolerance

F : 1%

Packaging code

Termination code

WR12 : 1206

WR08 : 0805

WR06 : 0603

WR04: 0402

: 7” Reeled taping

: 10” Reeled taping

: 13” Reeled taping

: 13'' reel 50Kpcs

L= Sn base

(lead free)

5%, E24: 2 significant

digits followed by no. of

zeros and a blank

Jumper

J : 5%

5%, 1 ~ 10M

1%, 10 ~ 1M

W :

P : Jumper

4.7

=4R7_

=100_

=221_

=000_

10

only for 0402

220

Jumper

: Bulk

1%, < 10; >1M

: 7'' reel 20Kpcs

only for 0402

(“_” means a blank)

A : 7" reel 15Kpcs only

for 0402

1%, E24+E96: 3 significant

digits followed by no. of

zeros

102

=1020

=3742

37.4K

WR12, WR08, WR06:

1. Reeled tape packaging : 8mm width paper taping 5000pcs per 7” reel, 10kpcs per 10” reel, 20kpcs per 13” reel.

2. Bulk packaging

: 5000pcs per poly-bag

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WR04:

1. Reeled tape packaging : 8mm width paper taping 10,000pcs per 7” reel, 20,000pcs per 10” reel. 70,000pcs per 13”

reel.

2. Bulk packaging

: 10,000pcs per poly-bag

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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

Electrical

PROCEDURE / TEST METHOD

- DC resistance values measurement

Resistor

Within the specified tolerance

Refer to “QUICK REFERENCE

DATA”

0

Characteristics

- Temperature Coefficient of Resistance (T.C.R)

Natural resistance change per change in degree centigrade.

JISC5201-1: 1998

Clause 4.8

<50m

R₂ R

₁t₂t₁

10⁶(ppm/C) t₁: 20°C+5°C-1°C; t₂: -55°C or +155°C

R₁: Resistance at reference temperature (20°C+5°C/-1°C)

R₂: Resistance at test temperature (-55°C or +155°C)

Resistance to

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

solder bath at 260℃±5ºC

5%:R/Rmax.(1%+0.05)

1%:R/Rmax.(0.5%+0.05)

no visible damage

soldering heat(R.S.H)

JISC5201-1:1998

Clause 4.18

<50m

Un-mounted chips completely immersed for 2±0.5 second in a SAC

solder bath at 235℃±5℃

Solderability

95% coverage min., good tinning and no

visible damage

JISC5201-1: 1998

Clause 4.17

5%: R/R max. (1%+0.05)

30 minutes at -55C3C, 2~3 minutes at 20°C+5°C-1°C, 30 minutes at

+155C3C, 2~3 minutes at 20°C+5°C-1°C, total 5 continuous cycles

Temperature cycling

JISC5201-1: 1998

Clause 4.19

<50m

1%:R/Rmax.(0.5%+0.05)

No visible damage

High Temperature

Exposure

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

5%:R/Rmax.(2%+0.1)

1%:R/Rmax.(1%+0.1)

No visible damage

controlled 1553C

<50m

MIL-STD-202

method 108

Bending strength

JISC5201-1: 1998

Clause 4.33

Resistors mounted on a 90mm glass epoxy resin PCB(FR4), bending 5%:R/Rmax.(1%+0.05)

once 3mm for 10sec, 5mm for WR04

1%:R/Rmax.(1%+0.05)

No visual damaged

Adhesion

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

No remarkable damage or removal of the

terminations

JISC5201-1: 1998

Clause 4.32

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

Short Time Overload

(STOL)

5%: R/R max. (2%+0.05)

1%: R/R max. (1%+0.05)

<50m

JISC5201-1: 1998

Clause 4.13

No visible damage

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TEST

REQUIREMENT

Resistor

PROCEDURE / TEST METHOD

0

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

5%: R/R max. (2%+0.1)

1%: R/R max. (1%+0.1)

No visible damage

<50m

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

5%: R/R max. (3%+0.1)

1%: R/R max. (1%+0.1)

<50m

No visible damage

Insulation Resistance Apply the maximum overload voltage (DC) for 1minute

R≧10GΩ

JISC5201-1: 1998

Clause 4.6

Dielectric Withstand

Voltage

Apply the maximum overload voltage (AC) for 1 minute

No breakdown or flashover

JISC5201-1: 1998

Clause 4.7

TEST CONDITION FOR JUMPER (0 )

Item

WR12

WR08

1/8W

WR06

1/10W

WR04

1/16W

1/4W

Power Rating At 70C

Resistance

MAX.50m

Rated Current

1.5A

3.5A

Peak Current

Operating Temperature

-55 ~ +155C

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PACKAGING

Paper Tape specifications (unit :mm)

Series No.

WR12

3.60±0.20

2.40±0.20

1.90±0.20

1.20±0.10

2.00±0.20

1.65±0.20

1.10±0.20

0.70±0.10

WR08

8.00±0.30

3.50±0.20

1.75±0.10

WR06

WR04

Series No.

WR12 / WR08

WR06

D

Max. 1.0

0.65±0.05

0.40±0.05

4.00±0.10

2.00±0.10

0.1

4.00±0.10

1.50

0.0

WR04

7” Reel dimensions

Symbol

7” reel

10” reel

13” reel

13.0±0.2

9.0±0.5

178.0±2.0

254.0±2.0

330.0±2.0

60.0±1.0

100.0±1.0

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ASC_WR_V24

SEP 2016

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