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Home » NEWEST Products » New by Manufacturer » TT Electronics » WHS Wirewound High Surge Resistors - TT Electronics Welwyn
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Welwyn / TT Electronics

Welwyn / TT Electronics WHS Series Wirewound
High Surge Resistors

Welwyn / TT Electronics WHS Series Wirewound High Surge Resistors offer the industry's highest surge energy ratings from 2W to 7W sizes. The WHS2, rated at 2W, is the smallest resistor of its type on the market and provides surge energy ratings of 0.9 to 5.8J. WHS Series Wirewound High Surge Resistors are available rated 3, 5 and 7W, in resistance values up to 330Ω and taking energy ratings up to 60J. Designers have greater flexibility with the additional options of radial, goalpost, lancet and SMD Z-form leads. All the WHS Series Wirewound High Surge Resistors benefit from UL94-V0 flameproof protection and operate over a wide -55º to +155ºC temperature range. Suitable for a wide range of pulse applications, the Welwyn / TT Electronics WHS Series Wirewound High Surge Resistors are flameproof, and are aimed at designers of power supplies requiring a line input resistor for inrush limiting and protection.

View all TT Electronics Axial Film Resistors

  • Enhanced surge & pulse energy capacity
  • UL94-V0 flameproof protection
  • Radial taped form available
  • Surface mount Z-form available
  • RoHS compliant with Pb-free terminations

Pulse Performance
Surge / Pulse Energy Capacity
(single or low repetition rate, ΔR < 5%)

Peak Performance 
1.2/50µ s Peak Voltage Limit
(10 pulses at 30s intervals, ΔR < 5%)
Note the voltage shown is the net voltage across the resistor.
At low values, the generator open circuit voltage will be higher due to the
generator's 2 ohm internal impedance.

Thermal Performance

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  • Welwyn / TT Electronics
  • Passive Components|Resistors