GCF Series
Construction
A carbon film is deposited onto a ceramic former. Plated steel caps are then fitted before the resistor is adjusted to value by a helical
cut in the film. Termination wires are then welded to the caps and the body of the resistor is protected with an epoxy coating.
Terminations
Material
Strength
Hot tin dipped copper wire.
The terminations meet the requirements of IEC 68.2.21
SolderabilityThe terminations meet the requirements of IEC 115-1,Clause 4.17.3.2
Marketing
Resistance value and tolerance are identified in accordance with IEC 62 4-band colour code.
Solvent Resistance
The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits.
Performance Data
Maximum Change
Load life
DR%
DR%
DR%
3
5
Load life in humidity
Temperature rapaid change
Derating from rated power at 70°C
Short term overload
1 + 0.05W
Zero at 155°C
1 + 0.05W
No evidence of mechanical damage
DR%
DR%
Terminal strength
Resistance to solder heat
1 + 0.05W
Minimum of 95% coverage
Solderability
Resistance to solder heat
Insulation resistance
Dielectric withstanding
No deterioration of protective coating and marking
1000M
min
No evidence of flahover, mechanical damage, arcing of insulation breakdown
© 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
Issue A . 11.06
TTELEC [ TT Electronics ]
