WR10X4702FTL [WALSIN]

Thick film Technology General purpose chip resistors;


型号：	WR10X4702FTL
厂家：	Walsin Technology
描述：	Thick film Technology General purpose chip resistors
文件：	总8页 (文件大小：239K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Approval sheet

WR10X(W)

±1%, ±5%

Thick film Technology

General purpose chip resistors

Size 1210

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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 compliant and Lead free products

APPLICATION

•

Consumer electrical equipment

Automotive application

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

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 Tin (lead free) alloy.

Fig 1. Construction of Chip-R

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Approval sheet

QUICK REFERENCE DATA

Item

General Specification

WR10X(W)

Series No.

Size code

1210 ( 3225 )

Resistance Tolerance

Resistance Range

±1% ( E96/E24 ), ±5% ( E24 )

Jumper, 1Ω ~ 10MΩ ( E96+E24 series)

> 10R , ≤ ± 100 ppm/°C

1R ~ 10R, ≤ ± 200 ppm/°C

1/3 W ( 0.33 W )

TCR (ppm/°C)

-55°C ~ +155°C

Max. dissipation at T_amb=70°C

Max. Operation Voltage (DC or RMS)

Max. Overload Voltage (DC or RMS)

Climatic category

200V

400V

55/155/56

Type

WR10X

1/3 W

Power Rating At 70C

Resistance

Max. 50mR

2.5 A

Rated Current

Peak Current

6 A

Operating Temperature

-55C ~ 155C

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

RCWV = RatedPower ×Resistance Value or Max. RCWV listed above, whichever is lower.

DIMENSIONS(unit : mm)

Part No

WR10X

3.10 ± 0.10

2.60 ± 0.10

0.50 ± 0.20

0.50 ± 0.20 *1

0.55 ± 0.10

*1 original 0.45+/-0.20

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Approval sheet

MARKING

3-digits marking（±5%）

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

value.

4-digits marking（±1%

）

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

Example

RESISTANCE

4-digits marking

3-digits marking

90Ω

90R0

100Ω

1000

101

6800Ω

6801

682

47000Ω

4702

473

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 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.

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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 .

WR10

4702

Size code

Type code

Resistance code

Tolerance

J: ± 5%

Packaging code

T: 7” Reeled taping

Termination code

WR10: 1210 X :

5%, E24: 2 significant digits

L = Sn base (lead

followed by no. of zeros

free)

5%: 1R ~ 10M

1%: 10R ~ 1M

F: ± 1%

100Ω = 101_

10KΩ = 103

P: Jumper

1% E24+E96:

3 significant

1%: < 10R; > 1M0

digits followed by no. of

zeros

102Ω

=1020

=3742

=2200

37.4KΩ

220Ω

ꢀ

Reeled tape packaging : 8mm width paper taping 5000pcs per 7” reel.

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

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 68-1, subclause 5.3, unless otherwise specified.

Temperature: 15ºC to 35ºC.

Relative humidity: 45% to 75%.

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

REQUIREMENT

TEST

PROCEDURE / TEST METHOD

Resistor

0Ω

DC resistance values measured at the test voltages specified below :

<10Ω@0.1V, <100Ω@0.3V, <1KΩ@1.0V,

DC resistance

Within the specified

tolerance

<50mΩ

Clause 4.5

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

Natural resistance change per change in degree centigrade.

Refer to

Temperature

Coefficient of

Resistance(T.C.R)

“QUICK REFERENCE

DATA”

R₂− R

×10⁶(ppm/°C) t₁: 20°C+5°C-1°C

N/a

(

t₂− t₁

)

Clause 4.8

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.

∆R/R max. ±(2%+0.10Ω)

<50mΩ

Clause 4.13

Resistance to soldering

heat(R.S.H)

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

solder bath at 260℃±5ºC

ΔR/R max. ±(1%+0.05Ω)

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±0.5 second 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 +155°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)

< 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, 1.5hours on

and 0.5 hours off

10Ω≤R<1MΩ :

Damp Heat

∆R/R max. ±(3%+0.10Ω)

R<10Ω, R≥1MΩ :

(Load life in humidity)

Clause 4.24

∆R/R max. ±(5%+0.10Ω)

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

Load Life (Endurance)

Ditto.

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

Clause 4.25

Resistors mounted on a 90mm glass epoxy resin PCB(FR4), No visual damaged,

Bending strength

< 50mΩ

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: 5N, Test time: 10±1sec.

Clause 4.32

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REQUIREMENT

Resistor

TEST

PROCEDURE / TEST METHOD

0Ω

Insulation Resistance

Apply the maximum overload voltage (DC) for 1minutes

R≧10GΩ

Clause 4.6

Dielectric Withstand

Voltage

Apply the maximum overload voltage (AC) for 1 minutes

No breakdown or flashover

Clause 4.7

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PACKAGING

Paper Tape specifications (unit :mm)

Component Size / Series

ΦD

Φ1.50

+0.1

−0.0

8.00±0.30

3.50±0.20

1.75±0.10

4.00±0.10

WR10X

Component Size / Series

WR10X

4.00±0.10

3.60±0.20

3.00±0.20

Max. 1.0

Reel dimensions

Symbol

(unit : mm)

13.0±0.2

9.0±0.5

Φ178.0±2.0

Φ60.0±1.0

Taping quantity

Chip resistors 5,000 pcs/reel

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