Nxp bt series triacs to 220ab nxp bt 138 800 e a 12a 800v planar passivated sensitive gate four quadrant triac 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 nxp bt 138 800 e triac 12a 800v to220ab