If you do, Vishay has turned that into reality with a series of pick-and-place-friendly cemented wire-wounds.
They are actually the company’s existing 3W AC03-CS series of fuseable resistors, with the legs bent into what the company is calling its WSZ lead-form (see photo), available from 1Ω to 100Ω ±5%, with ±200ppm/°C temperature coefficient .
Operation is over -40 to +200°C, with power derating above 40°C.
Being fuseable, and having a non-flammable (UL 94 V-0) silicone cement coating, allows the resistors to handle high electrical overloads without the need for a series fuse.
Surge voltage capability is 4kV (1.2/50µs pulse to IEC 61000-4-5).
“The devices are designed 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 120 or 240Vrms is applied,” said Vishay.
Use is expected in-rush current limiting, pre-charging, discharging and snubbing, including in automotive applications as the parts are AEC-Q200 qualified.
