800 V off-state, 1 A RMS — rated for small-signal AC switching
The Z0103NA 1AA2 is a sensitive-gate TRIAC from STMicroelectronics, rated for 800 V off-state voltage and 1 A RMS on-state current in a TO-92-3 through-hole package. The 800 V blocking capability provides margin for 240 VAC line applications, while the 1 A RMS current handles small motors, solenoids, lamps, or solid-state relay outputs. A maximum gate trigger current of 3 mA and gate trigger voltage of 1.3 V mean this part can be driven directly by a microcontroller GPIO or low-voltage logic without a separate driver stage — the sensitive gate classification ensures reliable turn-on from low-current control signals.
Hold current and surge capability for inductive loads
Maximum hold current is 7 mA — once triggered, the TRIAC stays latched as long as the load current stays above this threshold. For inductive loads like small relays or valve coils, verify the minimum load current exceeds 7 mA at the operating point to avoid premature commutation. Non-repetitive surge current rating is 8 A at 50 Hz and 8.5 A at 60 Hz — this covers inrush from incandescent lamps or capacitive loads during turn-on without damaging the die.
Active production, ROHS3 compliant — no lifecycle risk
Availability, current pricing, and lead time are confirmed at the time of RFQ — no stock-holding or shipping-immediacy claim is made here.