WH50 3R3JI Welwyn Components, WH50 3R3JI Datasheet

RESISTORS, 50W 5% 3R3RESISTOR, 50W 5% 3R3

WH50 3R3JI

Manufacturer Part Number

WH50 3R3JI

Description

RESISTORS, 50W 5% 3R3RESISTOR, 50W 5% 3R3

Manufacturer

Welwyn Components

Series

WH50r

Datasheet

1.WH50_3R3JI.pdf (3 pages)

Specifications of WH50 3R3JI

Resistors Element Type

WIREWOUND ALUMINUM CLAD

Resistance

3.3R

Power Rating

50W

Tolerance, +

Tolerance, -

Temp, Op. Max

275(DEGREE C)

Temp, Op. Min

-55(DEGREE C)

Rohs Compliant

YES

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*For load at maximum rating mount on heatsink 30.5 cm x 30.5 cm x 1.5 mm

Construction

Cap and lead assemblies are fitted to a high purity ceramic

substrate. The resistive element is wound onto the substrate

and welded to the caps. The wound rod is then moulded and

fitted into an aluminium housing to give optimum stability

and reliability.

Terminations

Material

Strength

Solderability

Aluminium Housed

Wirewound Resistors

WH Series

•

Electrical Data

General Note

Welwyn Components reserves the right to make changes in product specification without notice or liability.

All information is subject to Welwyn’s own data and is considered accurate at time of going to print.

Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

Power rating at 25°C

Resistance range

TCR (-55° to 200°C)

Resistance tolerance

Low value limits

Approved CECC 40203 - 006

Power rating at 25°C

Resistance range

TCR (-55° to 200°C)

Resistance tolerance

Low value limits

Limiting element voltage

Standard values

Thermal impedance

Ambient temperature range

High power dissipation for size

All welded construction

Suitable for severe environments

Designed for excellent thermal

conductivity to heatsink

Solder dipped, copper clad steel wire.

The terminations meet the requirements of

IEC 68.2.21

The terminations meet the requirements of

IEC 115-1, Clause 4.17.3.2

ppm/°C

°C/watt

watts

ohms

watts

ohms

volts

°C

· Bedlington, Northumberland NE22 7AA, UK

0R01 to 10K

0.05 to 3.4k

WH5

16.0

150

1 at 1%

<10

1 at 1%

: ±75

0R01 to 20K

0.5 at 2%

0.05 to 15k

WH10

10.0

250

E24 preferred range

to <100 : ±50

0.5 at 2%

-55 to 200

1, 2, 5, 10

± 100

1, 2, 5

0.05 at 5%

Marking

The resistors are legend marked with type reference,

resistance value and tolerance which will withstand all

accepted industrial cleaning fluids. Values are marked in

accordance with IEC 62.

0R01 to 44K

0.05 to 33k

>10

WH25

500

0.05 at 5%

6.0

± 50

100

0.01 at 10%

0R015 to 120K

: ±25

0.05 to 82k

WH50

1250

50*

3.5

Welwyn Components

Other values to special order

Mounted on standard heatsink

WH50 0.015 at 10%

Notes

TT electronics plc

Issue D · 03.06

A subsidiary of

107

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WH50 3R3JI Summary of contents

Page 1

... The terminations meet the requirements of IEC 115-1, Clause 4.17.3.2 General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyn’s own data and is considered accurate at time of going to print. © Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · ...

Page 2

... Resistance to solder heat Vibration and bump Noise (in decade of frequency) Insulation resistance. Isolation voltage : WH5 and 10 : WH25 and 50 Pulse handling © Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com 108 ± ...

Page 3

... Packaging Resistors are packed in plastic bags and boxed for maximum protection. © Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com Graph 1 Reference 50 area sq ...

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