The AQH2223A comes in an 8-SMD package with 7 leads and gull-wing termination — the 0.300-inch (7.62 mm) body width gives enough pad real estate for hand rework under a hot-air station without cooking adjacent parts. Gull-wing leads are visible for solder-joint inspection after reflow, and the 1.21 VDC input means the coil side runs off a low-voltage rail common in mixed-signal boards.
What the load ratings mean for fit
Rated for 900 mA continuous load current at up to 600 V AC — this is a high-voltage signal relay, not a power relay; it switches small loads like PLC input modules, sensor outputs, or auxiliary contactors where the 600 V rating provides isolation margin above the 230/400 V line. The SPST-NO (1 Form A) circuit is normally open, so the load is disconnected when the coil is off — typical for fail-safe or power-up sequencing where the default state is open.
The base product number AQH2223 covers the family; the trailing 'A' suffix typically denotes a specific packaging or lead-free variant — confirm the full order code against the BOM line before committing.