Precision Metal
Film Resistors
RC series
Welwyn Components
•
CECC released products with low
TCRs over a wide resistance range
•
Resistance tolerance down to 0.05%
•
Express delivery available
•
Low noise and negligible voltage coefficient
Electrical Data
RC55
Commercial
Power rating at 70°C
Resistance range
Limiting element voltage
Isolation voltage
TCR (20 to +70°C) & codes
Resistance tolerance
Approved CECC 40101-004
Power rating at 70°C
Resistance range
Limiting element voltage
Isolation voltage
TCR & codes
Resistance tolerance (code)
Approved CECC 40101-804
Power rating at 70°C
Resistance range
Limiting element voltage
Isolation voltage
TCR & codes
Resistance tolerance (code)
Standard values
Thermal impedance
Ambient temperature range
°C/watt
°C
110
watts
ohms
volts
volts
ppm/°C
%
watts
volts
volts
ppm/°C
%
A
0.125
1R to 1M
200
280
B
0.25
1R to 1M
250
350
watts
ohms
volts
volts
ppm/°C
%
H
0.063
200
280
J
0.125
200
280
0.25
1R to 4M
350
500
0.5
1R to 4M
350
500
5(V), 10(T), 15(Y), 25(D), 50(C) & 100(Z)
0.05(W), 0.1(B), 0.25(C), 0.5(D) & 1(F)
K
0.25
250
350
K
0.25
10R to 1M
250
350
15(Y), 25(D), 50(C) & 100(Z)
0.05(W), 0.1(B), 0.25(C), 0.5(D) & 1(F)
B
0.25
10R to 1M
250
350
15(T), 25(E) & 50(C)
0.05(W), 0.1(B), 0.25(C), 0.5(D) & 1(F)
E24, E96 preferred
70
-55 to +155
60
C
0.5
10R to 1M
350
500
See resistance
restrictions
Any value
to order
L
0.5
10R to 1M
350
500
See resistance
restrictions
1.0
1R to 10M
500
700
See resistance
restrictions
RC65
RC70
Notes
ohms 1R to 1M 1R to 1M 1R to 1M
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.
A subsidiary of
TT electronics plc
Issue B · 03.02
© 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
173
WELWYN [ WELWYN COMPONENTS LIMITED ]
