Triac-output optoisolator for AC load switching
The onsemi MOC3082SR2M is a 1-channel Triac-output optoisolator in a 6-SMD Gull Wing package, designed to switch AC loads from a low-voltage logic or microcontroller side with galvanic isolation. Its 800 V off-state blocking voltage and built-in zero-crossing circuit make it suited for driving resistive or lightly inductive loads like solenoids, relays, and small motors on 120 VAC or 240 VAC lines without generating excessive turn-on EMI.
Critical ratings for BOM fit
The minimum static dV/dt of 600 V/µs means the output Triac resists false turn-on from fast voltage transients on the AC line — a key parameter when switching inductive loads like contactor coils or transformer primaries where commutation noise is high. The 4170 Vrms isolation rating provides reinforced insulation for safety in equipment meeting UL 508 or IEC 60950 — the optoisolator bridges the low-voltage control side and the hazardous mains side with a certified creepage path.
Sourcing and procurement posture
The Tape & Reel packaging (also available as Cut Tape) is pick-and-place ready for high-volume assembly — the 6-SMD Gull Wing footprint is a standard outline with no special pad geometry.