The BTA312B-600B,118 NXP part is a 600V triac, with a blocking current rating of 12A, and a gate trigger current of 800mA, which makes it suitable for the purpose of switching power from AC sources. Its on-state resistance is 0.12Ohm, and it is rated for VDRM/VRRM of 600V. The maximum dissipation of the device is 32W, and its operating temperature range is -40°C to +85°C.