Wirewound High Surge Resistors
Material: Hot tin dipped copper wire
The terminations meet the requirements of IEC 68.2.21
The terminations meet the requirements of IEC 115-1 Clause 18.104.22.168
WHS2, WHSP2R and WHS3 resistors are marked with four colour bands in conformance with IEC62.
The larger sizes are legend marked with type reference, resistance value and tolerance.
The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits.
The resistor coating will not burn or emit incandescent particles under any condition of applied temperature or power overload.
Load at rated power: 1000hrs @ 25°C
Dry heat: 1000hrs @ 200°C
Short term overload
Derating from rated power @25°C
TRC & Vibration
Robustness & solder heat
Long term damp heat (56 days)
Zero at 280°C (See Thermal Performance graph).
Surge / Pulse Energy Capacity
(single or low repetition rate, ΔR < 5%)
WHS2 / WHSP2R
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All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
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BI Technologies IRC Welwyn