Nxp bt series triacs to 220ab nxp bt 138 600 e a 12a 600v planar passivated sensitive gate four quadrant triac intended for use in general purpose bidirectional switching and phase control applications this sensitive gate series triac is intended to be interfaced directly to microcontrollers logic integrated circuits and other low power gate trigger circuits nxp bt 138 600 e triac 12a 600v to220ab