PhotoMOS solid-state relay in a 4-SOP footprint
The Panasonic AQY211G2SZ is a PhotoMOS™ AQY series SPST-NO (1 Form A) solid-state relay in a 4-SOP surface-mount package with gull-wing leads. It switches AC or DC loads up to 1.6 A continuous across a 0 V to 40 V rail, with a 150 mOhm max on-state resistance that keeps conduction losses low in signal-level switching.
1.6 A continuous current at 150 mOhm on-resistance
Rated for 1.6 A load current, the AQY211G2SZ handles the steady-state current of a small solenoid, indicator lamp, or PLC output module without an external heatsink in most board layouts. The 150 mOhm max on-resistance produces about 0.38 W dissipation at full load — well within the 4-SOP package's thermal budget at 25 °C ambient, but derating applies as the board temperature climbs above 60 °C. The 0 V to 40 V load voltage range covers 12 V and 24 V industrial rails with margin for transients.