WR02W472_FAR [WALSIN]

RoHS compliant and Lead content 100ppm General purpose chip resistors;


型号：	WR02W472_FAR
厂家：	Walsin Technology
描述：	RoHS compliant and Lead content 100ppm General purpose chip resistors
文件：	总7页 (文件大小：236K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Approval sheet

WR02X(W)

±5%, ±1%

RoHS compliant and Lead content 100ppm

General purpose chip resistors

Size 0201

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

Page 1 of 7

ASC_WR02X_TR_V02

Jul - 2013

Approval sheet

FEATURE

1. Small size and light weight

2. High reliability and stability

3. Reduced size of final equipment

4. Suitable for high density print circuit board assembly

5. Higher component and equipment reliability

6. RoHS compliant and Lead free product

APPLICATION

Mobile phone

PDA

Camcorders

Palmtop computers

Hybrid module

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 nominated value within tolerance which controlled by laser trimming of this resistive

layer.

The resistive layer is covered with a BLACK 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 WR02X

Page 2 of 7

ASC_WR02X_TR_V02

Jul - 2013

Approval sheet

QUICK REFERENCE DATA

Item

Series No.

General Specification

WR02X(W)

Size code

0201(0603)

Resistance Range

1Ω~10MΩ ( ±5% tolerance ), Jumper

1Ω~1MΩ ( ±1% tolerance )

Resistance Tolerance

±1%

E96/E24

±5%

E24

TCR (ppm/°C)

100Ω - 10MΩ, ±200

10Ω - 97.6Ω, +600 ~ 0

1 - 9.76Ω, +800~ -100

Max. dissipation @ T_amb=70°C

Max. Operation Voltage (DC or RMS)

Max. Overload Voltage (DC or RMS)

Climatic category (IEC 60068)

Note :

1/20 W

25V

50V

55/125/56

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×ResistanceValue

DIMENSION(unit : mm)

Protective coat

Type

WR02X(W)

0.60 ± 0.03

0.30 ± 0.03

0.23 ± 0.03

0.15 ± 0.05

0.10 ± 0.05

End termination

Resistive layer

Ceramic Substrate

MARKING

WR02X(W) has no marking.

Page 3 of 7

ASC_WR02X_TR_V02

Jul - 2013

Approval sheet

FUNCTIONAL DESCRIPTION

Product characterization

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

& ±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

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 WR02X(W)

Page 4 of 7

ASC_WR02X_TR_V02

Jul - 2013

Approval sheet

CATALOGUE NUMBERS

The resistors have a catalogue number starting with :

WR02

Size code

472_

Type code

Resistance code

Tolerance

J : ±5%

Packaging code

RoHS code

WR02 : 0201

X : Normal

5%, E24: 2 significant digits

followed by no. of

: 7” Reeled taping

(15Kpcs/Reel)

R = Lead free

(< 100 ppm )

W : 1% For <10Ω and

>1MΩ

F : ±1%

zeros and a blank.

: 7” Reeled taping

(10Kpcs/Reel)

P : Jumper

100Ω = 101_

10KΩ = 103_

1%, E24+E96: 3 significant

digits followed by no.

of zeros

100Ω

=1000

=3742

37.4KΩ

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

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

DC resistance

PROCEDURE / TEST METHOD

Resistor

0Ω

DC resistance values measured at the test voltages

specified below :

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 Refer to

centigrade.

Temperature Coefficient

of Resistance(T.C.R)

“QUICK REFERENCE DATA”

Clause 4.8

R₂− R

×10⁶(ppm/°C) t₁: 20°C+5°C-1°C

N/a

(

t₂− t₁

)

R₁: Resistance at reference temperature

R₂: Resistance at test temperature

Short time overload

(S.T.O.L)

Permanent resistance change after

2second

application of a voltage 2.5 times RCWV or the maximum

overload voltage specified in the above list, whichever is

less.

∆R/R max. ±(1%+0.05Ω)

<50mΩ

Clause 4.13

Page 5 of 7

ASC_WR02X_TR_V02

Jul - 2013

Approval sheet

Un-mounted chips completely immersed for 10±1second

in a SAC solder bath at 260℃±5ºC

Resistance to soldering

heat(R.S.H)

ΔR/R max. ±(1%+0.05Ω)

<50mΩ

no visible damage

Clause 4.18

Solderability

Clause 4.17

95% coverage min., good tinning and no

visible damage

Un-mounted chips completely immersed for 2±0.8second

in a SAC solder bath at 235℃±5℃

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

30 minutes at +125°C±3°C, 2~3 minutes at 20°C+5°C-

1°C, total 5 continuous cycles

Temperature cycling

∆R/R max. ±(1%+0.05Ω)

∆R/R max. ±(5%+0.10Ω)

< 50mΩ

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,

Damp Heat

(Load life in humidity)

Clause 4.24

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

∆R/R max. ±(5%+0.10Ω)

Load Life (Endurance)

< 50mΩ

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

Clause 4.25

125’C x 1000hrs, no load

High temperature

Clause 4.25

Resistors mounted on a 90mm glass epoxy resin No visual damaged,

Bending strength

< 50mΩ

PCB(FR4), bending once 3mm for 10sec.

∆R/R max. ±(1%+0.05Ω)

Clause 4.33

No remarkable damage or removal of the

terminations

Adhesion

Pressurizing force: 3N, Test time: 10±1sec.

Clause 4.32

Page 6 of 7

ASC_WR02X_TR_V02

Jul - 2013

Approval sheet

PACKAGING

Paper Tape specifications (unit :mm)

Series No.

WR02X

0.67±0.05

0.37±0.05

8.00±0.20

3.50±0.05

1.75±0.10

Series No.

WR02X

ΦD

+0.1

2.00±0.05

4.00±0.05

0.45±0.05

Φ1.50

−0.0

Reel dimensions

Symbol

(unit : mm)

Φ60.0±1.0

Φ60.0+1/-0

13.0±0.2

9.0+1/-0

Φ180.0+0/-1.5

Taping quantity and Tape material

Chip resistors 15,000 pcs/reel, Paper tape.

Page 7 of 7

ASC_WR02X_TR_V02

Jul - 2013

相关型号：