Axial cemented leaded wirewound safety resistors pick and place friendly

Vishay Intertechnology, Inc. has announced that its AC03-CS series of axial, cemented, leaded wirewound safety resistors is now available with a pick-and-place-friendly lead bending option, the WSZ lead form, which enables the devices to be used as surface-mount components, reducing assembly time and lowering costs.

Vishay Draloric AC03-CS series resistors function as inrush current limiting resistors during normal operation, serving as pre-charge, discharge, and snubber resistors. The devices are developed to ensure safe and silent fusing in automotive electronics, energy meters, and power supplies for industrial drives and consumer appliances when high DC voltage overload or accidental AC mains voltage of 120VRMS/240VRMS is applied.

For challenging operating conditions, the devices operate over a wide temperature range of -40C to +200C and offer a robust, non-flammable silicone cement coating that conforms to UL 94 V-0 standards. This coating enables the resistors to protect the PCB and other components by minimising the risk of fire due to extreme electrical overloads without the necessity for additional fuses in series.

The AEC-Q200 qualified AC03-CS series features a high surge voltage capability of up to 4kV (1.2/50µs pulse per IEC 61000-4-5) and a power rating of 3W at an ambient temperature of 40C. The devices supply resistance from 1Ω to 100Ω, resistance tolerance of ±5%, and TCR of ±200ppm/K. RoHS-compliant, halogen-free, and Vishay Green, the resistors feature tin-plated terminations for compatibility with lead (Pb)-free and lead (Pb)-containing soldering processes.