Claimed to provide superior short-term surge protection compared with standard wirewound devices, the resistors are available with 1-13W power ratings and resistances from 0.1Ω to 167kΩ with tolerances of ±3, ±5, and ±10%. The devices also provide TCR of ±90ppm/°C for resistance below 0.99Ω, ±50ppm/°C for resistances of 1.0-9.9Ω and ±30ppm/°C for resistances over 10Ω.
The CW – High Surge resistors meet IEC 61000-4-5 requirements with overload and high surge voltage protection for 1.2 and 50µs, respectively. Featuring a 2,000 hour load-life stability of less than ±3% at +25°C, the devices’ rugged, completely welded construction increases reliability. A high-temperature silicone coating enables operating temperature ranges of -65 to +250°C (characteristic U) and -65 to +350°C (characteristic V).
Offered with both lead-free and tin/lead terminations, the CW – High Surge series resistors are available now for sampling and in production quantities. Lead times are 8-10 weeks for larger orders.