What the 300 mA / 600 V AC rating means for your load
The AQH0223A is a solid-state relay (SSR) from the AQ-H series, switching AC loads up to 300 mA continuous at line voltages from 0 V to 600 V AC. The 600 V blocking voltage covers 277 VAC line-to-neutral with margin for transients, and the 300 mA rating suits solenoid valves, small contactors, indicator lamps, and PLC digital outputs where a mechanical relay's contact wear is a concern. The SPST-NO (1 Form A) output closes when the input exceeds the threshold, and opens when the input drops below the release voltage.
Package, footprint, and reflow considerations
Housed in an 8-SMD package with 0.300-inch (7.62 mm) body width and 7 leads on a gull-wing formation. The 8-SMD footprint is standard for this class of SSR — the 7 active pins map to input (pins 1-2), output (pins 6-8), and no-connect on the remaining position. The gull-wing leads provide visual solder-joint inspection access and self-centering during reflow. Surface-mount assembly with a standard lead-free reflow profile.
Active production and sourcing posture
The manufacturer lifecycle record lists the AQH0223A as Active — Panasonic Electric Works continues to produce this order code. The base product number AQH0223 covers the full series variant; the trailing 'A' suffix indicates the specific package and lead finish option. When ordering, match the full AQH0223A string to the BOM line.