GC Datasheet, PDF (1/2 Pages) Welwyn Components Limited – High Value Thick Film Resistors

High Value Thick Film
Resistors
GC Series
• ^{High working voltage to 10kV}
• ^{Value up to 1G ohm}
• ^{Custom product available}
• ^{High stability thick film}
Welwyn Components
Electrical Data
Power rating at 70°C
Resistance range
Limiting element voltage
Isolation voltage
TCR (20°C to 70°C)
Resistance tolerance
Values
Thermal impedance
Ambient temperature range
watts
ohms
Volts dc or ac Peak
volts
ppm/°C
%
°C/watt
°C
GC55
0.25
47k to 900 meg
1700
140
GC65
0.5
47k to 900 meg
3500
700
100
1, 2, 5
E24 & E96 preferred
90
- 55 to 155
GC70
1.0
47k to 1G
10000
70
Physical Data
Dimensions (mm) and Weight (g)
Type
GC55
GC65
GC70
L max.
6.2
9.0
14.5
D max.
2.5
3.6
5.3
f min.
21.0
19.6
23.6
d nom.
PCB
mounting
centres
0.6
10.2
0.8
13.7
0.8
20.3
Min
bend
radius
0.6
1.2
1.2
Wt
nom.
0.3
0.6
1.1
dD
L
f
Construction
Thick film material is fired on to high grade ceramic rods.
Nickel plated steel caps are force fitted and the termination
wires are welded to the caps. The value is obtained by a
helical cut in the film and finally the resistor body is given a
high temperature protective coating.
Terminations
Material
Solder coated copper wire.
Strength
The terminations satisfy the requirements of
IEC 68.2.21.
Solderability The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2.
Marking
1% tolerance resistors are colour coded with 5 bands, 2%
and 5% tolerance have 4, IEC 62 colours are used.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning fluids suitable for printed circuit boards.
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: [phone] · Facsimile: [phone] · Email: [e-mail] · Website: www.welwyn-tt.com
A subsidiary of
TT electronics plc
Issue B · 03.02
199