AQZ404 PhotoMOS® Panasonic AQZ404 PhotoMOS® are power relays available in a slim SIL 4-pin package (2.10mm x 3.5mm x 12.5mm), enabling high-density mounting. This series features a space-saving design, low on-resistance (2.8Ω typical), high sensitivity, a normally closed (1 Form B) contact, and a built-in MOSFET. The Panasonic AQZ404 PhotoMOS series can be installed on RT-3 relay terminals.