Datasheet > WH10-R20JI

WH10-R20JI

更新时间： 2024-09-16 23:42:15

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描述
RESISTOR 0R2 15W

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WH10-R20JI 数据手册

Chassis Mounting

Wirewould Resistors

WH SERIES

● High quality ceramic substrate

● All welded construction

● Anodised extruded aluminium case

● High power dissipation for size

● Suitable for severe environments

● Designed for excellent thermal conductivity

to heatsink

Electrical Data

WH5

EH10

WH25

WH50

NOTES

Power rating at 25°C

watts

50*

Mounted on

standard heatsink

Resistance range

TCR (-55° to 200°C)

Resistance tolerance

Low value limits

ohms 0.01 to 10k 0.01 to 20k 0.01 to 44k 0.015 to 120k

ppm/°C

<10Ω : ±75

≥ to <100 : ±50

≥100Ω : ±25

1, 2, 5, 10

ohms

1 at 1%

0.5 at 2%

0.05 at 5%

0.01 at 10%

WH50 0.015 at 10%

APPROVED CECC 40203 - 006

Power rating at 25°C

watts

Mounted on

standard heatsink

Resistance range

TCR (-55° to 200°C)

Resistance tolerance

Low value limits

ohms 0.05 to 3.4k 0.05 to 15k 0.05 to 33k 0.05 to 82k

ppm/°C

≥5Ω ≤ 10Ω ± 100

1, 2, 5

1 at 1% 0.5 at 2%

>10Ω ± 50

0.05 at 5%

500

ohms

Limiting element voltage volts

Standard values

150

250

1250

3.5

E24 preferred range

Other values

to special order

Mounted on

Thermal impedance

°C/watt

16.0

10.0 6.0

standard heatsink

Operating temperature range °C

-55 to 200

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

CONSTRUCTION

MARKING

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.

The resistors are legend marked with type reference,

resistance value and tolerance. Values are marked in

accordance with IEC 62.

SOLVENT RESISTANCE

Resistor and marking withstand all accepted industrial

cleaning fluids.

TERMINATIONS

Material

Strength

Solder dipped, copper clad steel wire.

The terminations meet the requirements of

IEC 68.2.21

Solderability

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.

Bedlington, Northumberland NE22 7AA, England Tel: 01670 822181 Fax: 01670 829465 Web: http://www.Welwyn-TT.co.uk

Issue A 07/99

12 3

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