What the 1.6 A and 150 mOhm ratings mean for your BOM
The AQY211G2SX is a 1.6 A continuous-load PhotoMOS relay in the AQY series from Panasonic, switching AC or DC loads up to 40 V through a single-pole normally-open (SPST-NO) output. The 150 mOhm typical on-state resistance means the voltage drop at 1.6 A is about 240 mV — low enough to avoid significant self-heating in a signal path or low-power load, but not a dead short; budget the dissipation if the relay is continuously on at full current.
Package and board-fit: 4-SOP with gull-wing leads
The base product number AQY211 covers the family; the G2SX suffix indicates the tape-and-reel packaging variant for automated pick-and-place.
Active production — sourcing posture
Listed as active in Panasonic's current product portfolio.