Flameproof silicone coating improves resistor reliability

29th April 2016
Nat Bowers

Featuring a flameproof silicone coating for increased reliability, a series of axial-leaded thick film planar through-hole resistors has been unveiled by Vishay Intertechnology. Offering high voltage handling up to 15kV, the FHV Axial series devices are optimised for pulse applications in industrial power supplies and laboratory/medical equipment.

The devices feature a robust construction consisting of a high-temperature fired cermet film resistive element and high-purity 96% alumina core. With their flameproof silicone coating, the resistors are designed to withstand overload conditions without flame or mechanical damage.

Offering a non-inductive design in nine case sizes, the resistors feature a wide resistance range from 100Ω to 10GΩ, tolerances down to ±1%, low TCR to ±100ppm/°C and power ratings from 0.25 to 4W at +70°C and 0.125 to 2W at +125°C. The RoHS-compliant, halogen-free resistors offer tin-plated copper terminations. Matched sets are available on request.

Samples and production quantities of the FHV Axial series devices are available now, with lead times of 10 weeks for large orders.

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