This listing contains 1 piece of BT138800G in a TO220AB package (lot/date code 127). The BT138800G is a triac designed for AC power switching with three terminals and a standard TO220AB form factor for easy mounting and heat dissipation. Key benefits Reliable solidstate AC switching with bidirectional current flow, enabling efficient control of AC loads. Gatetriggered operation allows control from lowpower drive signals, simplifying circuit design. TO220AB package provides good heat sinking potential and straightforward throughhole mounting for both hobbyist and professional assemblies. Compact and robust, suitable for a variety of power control applications where space and reliability matter. Key attributes Model: BT138800G Package: TO220AB Type: Triac (threeterminal device) Terminals: MT1, MT2, Gate Construction: Plastic encapsulated semiconductor device Quantity: 1 piece Lot/Date code: 127 Compatibility: Fits standard AC power control circuits using a triac in the TO220AB package Functionality: Provides bidirectional AC switching controlled by the Gate input Applications and use cases Light dimming and AC power control in lamps, fans, and lighting drivers Small AC motor speed control in household appliances or power tools Solidstate power switching for heaters, heating elements, or other AC loads in control circuits Notes This description reflects the model BT138800G in the TO220AB package as listed. For exact electrical ratings, pinout, and mounting guidance, refer to the official datasheet and product documentation.