The RSP20-168 from Recom Power is a Surge Protector that has been designed to protect DC-DC converters from railway over-voltage transients of up to 385 V. It requires an input voltage of 40 - 160 V and delivers an output power of up to 20 W. This REACH-compliant protector module tracks the input voltage in the range of 40 - 165 V and clamps the output voltage to 168 V when the input voltage reaches the clamping voltage (threshold). It can be simply connected in series with the input of RP08-110xxSAW, RP08-110xxDAW, RP20-110xxSFR, and RP20-110xxDFR converter families to make them compliant to both RIA12 and NF F 01-510 surge immunity specifications. This RoHS-compliant protector IC is available in a through-hole package that measures 31.8 x 20.3 x 10.2 mm and is ideal for voltage protection applications.