3750 Vrms isolation and 10 V/µs dV/dt — what they mean for the BOM
The FODM3012R2V-NF098 is an onsemi optoisolator with a triac output rated for 3750 Vrms isolation and a 250 V off-state blocking voltage. The 10 V/µs minimum static dV/dt means the output triac resists false turn-on from fast-rising mains transients — a common failure mode when driving inductive loads like small solenoids or contactor coils without a snubber. The 70 mA RMS on-state current handles small AC loads: solid-state relay input coils, low-power incandescent indicators, or the gate drive of a larger external triac.