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WR08W47100_PTR

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品牌：WALSIN

描述：General purpose chip resistors RoHS exemption free lead free

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WR08W47100_PTR 概述

General purpose chip resistors RoHS exemption free lead free

WR08W47100_PTR 数据手册

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Approval sheet

WR10, WR12, WR08, WR06, WR04,

±1%, ±5%

General purpose chip resistors

RoHS exemption free lead free

Size 1210, 1206, 0805, 0603, 0402,

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

Page 1 of 8

ASC_WR_TR (Pb<100ppm)_V07

Nov - 2014

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 exemption free and Lead free products

APPLICATION

•

Consumer electrical equipment

Automotive application

EDP, Computer application

•

Telecom application

DESCRIPTION

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

electrodes are added at each end and connected by a LEAD FREE 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. For all series, Overcoat is water blue color. 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 a Chip-R

Page 2 of 8

ASC_WR_TR (Pb<100ppm)_V07

Nov - 2014

Approval sheet

QUICK REFERENCE DATA

Item

General Specification

Series No.

Size code

WR10

WR12

WR08

WR06

WR04

1210(3225)

1206(3216)

0805(2012)

0603(1608)

0402(1005)

Resistance

Range

1Ω ~10MΩ (±5% tolerance),

1Ω ~ 10MΩ (±1% tolerance), Jumper

Resistance

Tolerance

±1%

±5%

±1%

±5%

±1%

±5%

±1%

±5%

±1%

±5%

E24

E24/E96

E24

E96/E24

E24

E96/E24

E24

E96/E24

E24

E24/E96

TCR (ppm/°C)

R≥1MΩ

≤ ± 200

≤ ± 100

≤ ± 200

≤ ± 100

≤ ± 200

≤ ± 100

≤ ± 200

≤ ± 100

≤ ± 200

≤ ± 300

≤ ± 100

≤ ± 300

≤ ± 200

1MΩ＞R＞10Ω

R≤10Ω

-300/+500

Max. dissipation

@ T_amb=70°C

1/3 W

1/4 W

1/8 W

1/10 W

1/16 W

Max. Operation

Voltage (DC or

RMS)

200V

400V

200V

400V

150V

300V

50V

Max. Overload

Voltage (DC or

RMS)

100V

Climatic

category (IEC

60068)

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 as max. 0.05Ω.

DIMENSIONS (unit : mm)

WR10

WR12

WR08

WR06

WR04

3.10 ± 0.10

2.60 ± 0.10

0.55 ± 0.10

0.50 ± 0.20

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

Page 3 of 8

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Approval sheet

MARKING

All series are defined as no marking !

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”

De-rating

The power that the resistor can dissipate depends on the operating temperature; see Fig.2.1

Figure 2.1 Maximum dissipation in percentage of rated power as a

function of the ambient temperature for WR10X, WR12X

WR08X, WR06X, WR04X

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.

Page 4 of 8

ASC_WR_TR (Pb<100ppm)_V07

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Approval sheet

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

CATALOGUE NUMBERS

The resistors have a catalogue number starting with.

WR12

Type code

X :

472_

Size code

Resistance code

Tolerance

F : ±1%

Packaging code

RoHS code

WR10 : 1210

WR12 : 1206

WR08 : 0805

WR06 : 0603

WR04: 0402

5%, E24 : 2 significant digits

followed by no. of zeros

and a blank

: 7” Reeled taping

: 10” Reeled taping

: 13” Reeled taping

: Bulk

R = Lead free

(< 100 ppm )

5% : 1Ω~10MΩ

1% : 10Ω~1MΩ

J : ±5%

P : Jumper

4.7Ω

=4R7_

=100_

=221_

=000_

10Ω

1% : <10Ω; > 1MΩ

220Ω

Jumper

(“_” means a blank)

1%, E24/E96: 3 significant

digits followed by no. of

zeros

102Ω

=1020

=3742

37.4KΩ

LEAD content: below 100ppm with reference to IEC62321, determination of LEAD by ICP-AES

WR10, 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

WR04:

1. Reeled tape packaging : 8mm width paper taping 10,000pcs per reel,

2. Bulk packaging

: 10,000pcs per poly-bag

Page 5 of 8

ASC_WR_TR (Pb<100ppm)_V07

Nov - 2014

Approval sheet

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

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

0Ω

DC resistance values measured at the test voltages specified

below :

DC resistance

Clause 4.5

Within the specified tolerance

<50mΩ

<10Ω@0.1V, <100Ω@0.3V, <1KΩ@1.0V,

<10KΩ@3V, <100KΩ@10V, <1MΩ@25V, <10MΩ@30V

Natural resistance change per change in degree centigrade.

Temperature

Coefficient of

Resistance(T.C.R)

R₂− R

×10⁶(ppm/°C) t₁: 20°C+5°C-1°C

Refer to

N/a

(

t₂− t₁

)

Clause 4.8

“QUICK REFERENCE DATA”

R₁: Resistance at reference temperature

R₂: Resistance at test temperature

Short time overload

(S.T.O.L)

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.

1% tol.: ∆R/R max. ±(1%+0.10Ω)

5% tol.: ∆R/R max. ±(2%+0.10Ω)

<50mΩ

Clause 4.13

Resistance to

soldering heat(R.S.H)

Clause 4.18

Un-mounted chips completely immersed for 10±1second in a 1% tol.: ∆R/R max. ±(0.5%+0.10Ω)

SAC solder bath at 260℃±5ºC

5% tol.: ∆R/R max. ±(1%+0.10Ω)

95% coverage min., good tinning and no visible

damage

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

SAC solder bath at 235℃±5℃

Solderability

Clause 4.17

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

1% tol.: ∆R/R max. ±(0.5%+0.10Ω)

<50mΩ

5% tol.: ∆R/R max. ±(1%+0.10Ω)

Clause 4.19

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

1% tol.: ∆R/R max. ±(1%+0.10Ω)

Damp Heat

5% tol.: ∆R/R max. ±(2%+0.10Ω)

<50mΩ

(Load life in humidity)

Clause 4.24

1000 +48/-0 hours; loaded with RCWV or V_maxin chamber

1% tol.: ∆R/R max. ±(1%+0.10Ω)

Load Life(Endurance)

<50mΩ

5% tol.: ∆R/R max. ±(2%+0.10Ω)

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

Clause 4.25

Resistors mounted on a 90mm glass epoxy resin PCB(FR4),

bending once 3mm for 10sec, 5mm for WR04

1% tol.: ∆R/R max. ±(0.5%+0.10Ω)

<50mΩ

5 tol.: ∆R/R max. ±(1%+0.10Ω)

Bending strength

Clause 4.33

No remarkable damage or removal of the

terminations

Adhesion

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

Clause 4.32

Page 6 of 8

ASC_WR_TR (Pb<100ppm)_V07

Nov - 2014

Approval sheet

TEST CONDITION FOR JUMPER (0

Ω)

Item

Power Rating At 70°C

Resistance

WR10

1/3W

WR12

1/4W

WR08

1/8W

WR06

1/10W

WR04

1/16W

MAX.50mΩ

1.5A

Rated Current

2.5A

Peak Current

3.5A

1.5A

Operating Temperature

-55~155°C

PACKAGING

Paper Tape specifications (unit :mm)

Series No.

WR10

3.60±0.20

2.40±0.20

1.90±0.20

1.20±0.10

3.00±0.20

2.00±0.20

1.65±0.20

1.10±0.20

0.70±0.10

WR12

8.00±0.30

3.50±0.20

1.75±0.10

WR08

WR06

WR04

Series No.

WR10

ΦD

Max. 1.0

4.00±0.10

2.00±0.10

WR12 / WR08

WR06

+0.1

−0.0

4.00±0.10

Φ1.50

0.65±0.05

0.40±0.05

WR04

Page 7 of 8

ASC_WR_TR (Pb<100ppm)_V07

Nov - 2014

Approval sheet

7” Reel dimensions

Symbol

(unit : mm)

13.0±0.2

9.0±0.5

Φ178.0±2.0

Φ60.0±1.0

Page 8 of 8

ASC_WR_TR (Pb<100ppm)_V07

Nov - 2014

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