16 A logic-level triac for AC load switching
The STMicroelectronics T1605G-6I is a logic-level sensitive-gate triac rated for 16 A RMS on-state current and 600 V off-state voltage, housed in a TO-220AB insulated through-hole package.
Parametric profile for load and environment
The 16 A RMS rating covers resistive loads up to ~3.7 kW on a 230 VAC line, with derating required for inductive or capacitive loads where the peak current during switching exceeds the steady-state value. Non-repetitive surge capability of 140 A at 50 Hz handles the inrush from incandescent lamp filaments, motor start-up, or capacitor bank charging — the device must cool below Tj(max) between surge events. Hold current (Ih) of 5 mA max means the triac latches on once triggered and only commutates off when the load current drops below this threshold near the AC zero-crossing — typical for resistive and lightly inductive loads.
Package and board integration
The TO-220AB insulated tab eliminates the need for a mica washer or insulating pad when mounting to a heatsink — the backside tab is electrically isolated from the die, reducing assembly steps and thermal resistance. Through-hole TO-220-3 footprint suits wave-soldered or hand-soldered boards in power supplies, motor controllers, and solid-state relay replacements where surface-mount alternatives would require additional thermal management.
Compliance and lifecycle status
ROHS3 compliant, covering the full exemption list for lead-free soldering — no additional documentation required for EU market shipments.