BT136-600E TO-220 TO-220AB BT136-600E 4Q Triac . General description Planar passivated sensitive gate four quadrant triac in a SOT78 plastic package intended for use in general purpose bidirectional switching and phase control applications. This sensitive gate “series E triac is intended to be interfaced directly to microcontrollers, logic integrated circuits and other low power gate trigger circuits. 2. Features and benefits • Direct triggering from low power drivers and logic ICs • High blocking voltage capability • Low holding current for low cur rent loads and lowes .   .