“For applications with high voltage surge and low energy requirements, they are a viable replacement for carbon composition resistors, providing improved electrical and environmental stability, better tolerance and temperature coefficient, with better long-term availability,” according to the company.
Covering values from 560kΩ to 12MΩ, the 10kV surge-rated resistors are to be found in Stackpole’s ASRM12 (nominally 500mW), ASR1 (1W), ASRM1 (1W) and ASRM2 (2W) series.
Values from 3.3Ω to 510kΩ in the same series are rated for 5kV surges.
In each case, the test is 10 discharges from a 10nF capacitor. The data sheet describes single and repetitive pulse power handling in detail for a variety of imposed waveforms.
The company foresees high voltage applications in air conditioning, domestic appliances, metering, automation and medical devices. “Surge protection devices typically require resistors with high working voltage that may be challenging to find,” it said. “If the applications are low current or low energy, film resistors are an ideal technology.”
A data sheet covering all the relevant series can be found here
