Electrical Data

RC55

RC65

RC70

NOTES

COMMERCIAL

Power rating at 70°C

watts

0.25

0.5

1.0

Resistance range

ohms

1R to 4M

1R to 4M

1R to 10M

Limiting element voltage

volts

350

350

500

Isolation voltage

volts

500

500

700

TCR (20 to +70°C) & codes

ppm/°C

5(V), 10(T), 15(Y), 25(D), 50(C) & 100(Z)

See resistance

Resistance tolerance

%

0.05(W), 0.1(B), 0.25(C), 0.5(D) & 1(F)

restrictions

APPROVED CECC 40101-004

H

J

K

K

L

Power rating at 70°C

watts

0.063

0.125

0.25

0.25

0.5

Resistance range

ohms 1R to 1M 1R to 1M 1R to 1M

10R to 1M

10R to 1M

Limiting element voltage

volts

200

200

250

250

350

Isolation voltage

volts

280

280

350

350

500

TCR & codes

ppm/°C

15(Y), 25(D), 50(C) & 100(Z)

See resistance

Resistance tolerance (code)

%

0.05(W), 0.1(B), 0.25(C), 0.5(D) & 1(F)

restrictions

APPROVED CECC 40101-804

A

B

B

C

Power rating at 70°C

watts

0.125

0.25

0.25

0.5

Resistance range

ohms

1R to 1M

1R to 1M

10R to 1M

10R to 1M

Limiting element voltage

volts

200

250

250

350

Isolation voltage

volts

280

350

350

500

TCR & codes

ppm/°C

15(T), 25(E) & 50(C)

See resistance

Resistance tolerance (code)

%

0.05(W), 0.1(B), 0.25(C), 0.5(D) & 1(F)

restrictions

Standard values

E24, E96 preferred

Any value

Thermal impedance

°C/watt

110

70

60

to order

Ambient temperature range

°C

-55 to +155

© Welwyn Components Limited

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

Issue A 07/99

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.

Precision Metal

Film Resistors

RC SERIES

low TCRs over a wide

resistance range

coefficient

173