The Toshiba TLP3073(LF1,F is a single-channel, non-zero-crossing optotriac coupler in a 6-SMD (5 leads) gull-wing package. It provides 5000Vrms isolation between the LED input and the Triac output, with an off-state voltage rating of 800 V and a maximum on-state RMS current of 100 mA. The typical LED forward voltage is 1.15 V, and the maximum trigger current is 5 mA. Non-zero-crossing output means the Triac turns on immediately when the LED is triggered, regardless of the AC line phase. This makes the TLP3073(LF1,F suitable for phase-control applications such as dimmers, motor speed controllers, and solid-state relays where random-turn-on is required.
The 5000Vrms isolation qualifies this coupler for reinforced insulation in mains-connected equipment. The 800 V off-state voltage gives substantial headroom on a 240 VAC line (peak ~340 V). This part can handle the voltage spikes common in inductive load switching without avalanche breakdown. The typical static dV/dt of 2 kV/µs means it resists false triggering from fast line transients — a common failure mode in older optotriacs. The 100 mA on-state RMS current is sized for low-power loads — relays, contactors, small solenoids — not for direct high-current switching. For loads above 100 mA, this part drives a larger external Triac or SSR.
Package and sourcing note
If your line needs tape-and-reel, the sibling TLP3073(TP1,F is the same die in Tape & Reel, Cut Tape, and Digi-Reel formats. The package is a 6-SMD with 5 leads and gull-wing leads — a common footprint shared with other Toshiba optotriacs in the same family.