General Purpose
Carbon Film Resistors
GCF Series
Drop in replacement for CF/CR
Low cost
Extensive resistance range
Wide range of sizes and power ratings
RoHS compliant
Electrical Data
GCF¼
Power rating @70°C
Resistance range
Limiting element voltage
Max overload voltage
Dielectric withstanding voltage
TCR
watts
volts
volts
volts
ppm/°C
0.125
200
400
300
0.25
250
500
500
GCF¼S
0.25
200
400
300
GCF�½
0.5
350
700
700
<10R
<10R ~ <60K
<60K ~ <200K
<200K ~ <1M0
<1M0K ~ 10M
Resistance tolerance
Standard values
Ambient temperature range
°C
Note: 'S' denotes smaller body size - see physical data
%
GCF�½S
0.5
250
500
500
:
:
:
:
:
±5
E24
-55 to +155
GCF1
1
500
1000
1000
GCF1S
1
400
700
700
GCF2
2
500
1000
1000
GCF2S
2
500
800
700
GCF3S
3
500
1000
1000
ohms 1R0-1M0 1R0-10M 1R0-1M0 1R0-10M 1R0-10M 1R0-10M 1R0-10M 1R0-10M 1R0-10M 1R0-10M
0±350
0 ~ -500
0 ~ -700
0 ~ -1000
0 ~ -1500
Physical Data
L max
GCF1/8
GCF¼
GCF¼S
GCF�½
GCF�½S
GCF1
GCF1S
GCF2
GCF2S
GCF3S
3.5
6.8
3.5
10
6.8
16
12
17.5
16
17.5
D max
1.85
2.5
1.85
3.5
3
5.5
5
6.5
5.5
6.5
f min
25
25
25
25
25
25
25
25
25
25
d ± 0.10
0.5
0.55
0.5
0.6
0.55
0.8
0.63
0.8
0.8
0.8
PCB mounting
centres
min. Bend
Radius
Wt. nom.
7.6
10.2
7.6
15.2
10.2
20.3
17.8
22.9
20.3
22.9
0.5
0.55
0.5
0.6
0.55
1.2
0.6
1.2
1.2
1.2
0.1
0.3
0.1
0.55
0.35
1.0
0.65
1.2
1.0
1.2
d
D
L
f
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyns own data and is considered accurate at time of going to print.
© Welwyn Components Limited
Bedlington Northumberland NE22 7AA, UK
A subsidiary of
TT electronics plc
Issue D . 11.06
Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com
WELWYN [ WELWYN COMPONENTS LIMITED ]
