1.2 A AC zero-cross relay for 600 V line switching
The Panasonic AQH3213AZ is a surface-mount signal relay from the AQ-H series, switching AC loads up to 1.2 A at line voltages from 0 V to 600 V. The SPST-NO (1 Form A) output with zero-cross drive means the relay turns on near the AC voltage zero crossing, reducing inrush current and EMI in resistive or lightly inductive loads. The 8-SMD package with gull-wing leads suits standard reflow soldering profiles and keeps the board footprint compact.
Load voltage and current — what the ratings mean for your BOM
Rated at 1.2 A continuous load current, the relay handles small motors, solenoid valves, incandescent lamps, and resistive heater elements within that current envelope. The 600 V load voltage rating covers single-phase 230 VAC, 277 VAC lighting, and 480 VAC line-to-line switching with margin — the relay's internal triac output blocks voltage up to the peak of 600 V RMS. The zero-cross output type is important for loads where turn-on surge matters: a resistive heater or incandescent lamp draws 10–15× rated current at cold start if switched at the voltage peak. The AQH3213AZ's zero-cross circuit delays turn-on until the next zero crossing, limiting the surge to the load's steady-state current.
Sourcing and lifecycle — active production, no second-source on record
The base product number AQH3213 covers multiple package and tape options; the AZ suffix denotes the specific reel and cut-tape packaging variant. Confirm the BOM line's required packaging (cut tape vs reel) when placing the order.