Panasonic Electronic Components AQY221R2VY Solid State relay – SSOP miniature package - SPST (1 Form A) – NO – 4 SMD - New flat lead terminal shape – 0.175 in x 0.104 in x 0.071 in - Total power dissipation 300mW - Load voltage 40 V - Continuous load current 250 mA – On state resistance 1.25 Ohms