Features

n

Fusesat120Vor240V

n

E24resistancevalues

n

RoHScompliant*

n

UL1412recognized

n

CoatingmaterialmeetsUL94V-0

requirements

Applications

n

Whitegoods

n

Inverters

n

Lighting

n

Metering

FWxxASeriesFusiblePowerResistors

*RoHSDirective2002/95/ECJan.27,2003includingannexandRoHSRecast2011/65/EUJune8,2011.

Specificationsaresubjecttochangewithoutnotice.

Thedevicecharacteristicsandparametersinthisdatasheetcananddovaryindifferentapplicationsandactualdevice

performancemayvaryovertime.

Usersshouldverifyactualdeviceperformanceintheirspecificapplications.

DIMENSIONS:

MM

(INCHES)

Electrical Characteristics

Characteristic

FW Series

Power

1, 2, 3, 5, 7** W

Resistance Range

4.7 ohms to 100 ohms (E24 values)

UL 1412 Recognized Resistance Range

4.7 ohms to 47 ohms

Tolerance

5 %

TemperatureCoefficient

±200PPM/°C

OperatingTemperatureRange

-55°Cto+155°C

MaximumVoltage

√

P*R

Fusing Point

See Fusing Performance Chart

Fusing Time

See Fusing Performance Chart

Product Dimensions

General Introduction

TheFWxxASeriesofaxialleadedwirewoundresistorsisdesignedtofuseunderabnormalconditionssuchassuddensurgesin

voltage or circuit malfunctions. The resistor will fuse upon application of 120 or 240 voltages.

Theresistorwillfusesafelyif120or240Visapplied.Thetimetofusedependsonthe

resistance value.

**7W=240Vaconly.

Materials

Resistor ............... Wire wound around a

ceramic core

Lead Wire ........................Tinned copper

Housing ..........................Insulated resin

CoatingMaterial ...........MeetsUL94V-0

requirements

Agency Recognition

Description

UL 1412

FileNumber:E349323

HL

D

d

(DIA.)

H

63.0 ± 2.0

(2.5 ± 0.08)

10.0 ± 0.5

(0.39 ± 0.02)

75.0 ± 2.0

(2.95 ± 0.08)

6.0 ± 1.0

(0.24 ± 0.04)

Model

Dimensions

D

(Max.)

L

(Max.)

H

d

FW10A(1W)

5.0

(.197)

12

(.472)

28±3.0

(1.102±.118)

0.55±0.05

(.022±.002)

FW20A(2W)

6.0

(.236)

12

(.472)

28±3.0

(1.102±.118)

0.65±0.05

(.026±.002)

FW30A(3W)

6.5

(.256)

16

(.630)

28±3.0

(1.102±.118)

0.75±0.05

(.030±.002)

FW50A(5W)

7.5

(.295)

18

(.709)

28±3.0

(1.102±.118)

0.75±0.05

(.030±.002)

FW70A(7W)

9.5

(.374)

26

(1.024)

38±3.0

(1.496±.118)

0.75±0.05

(.030±.002)

How to Order

FW 10 A 7R50 J A

Model

FW=Fusible

Wirewound

Rated Power

10 = 1.0 Watts

20 = 2.0 Watts

30 = 3.0 Watts

50 = 5.0 Watts

70 = 7.0 Watts

Pin Style

A=Axial

Resistance Code

•R<100ohms:

“R” represents decimal point

(examples:7R50=7.5ohms)

•R≥100ohms:

Firstthreedigitsaresignificant,

fourthdigitrepresentsnumberof

zeros to follow

(example:1000=100ohms)

Resistance Tolerance

J=±5%

Packaging

A=AmmoPack

•1,000pcs./box:FW10,FW20,FW30

•500pcs./box:FW50,FW70

Resistance

Value

(Ohms)

Resistance

Code

4.7

4R70

5.1

5R10

5.6

5R60

6.2

6R20

6.8

6R80

Popular Values

Resistance

Value

(Ohms)

Resistance

Code

7.5

7R50

8.2

8R20

9.1

9R10

10.0

10R0