Nxp bt series triacs to 220ab nxp bt137 600e an 8a 600v 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 suitable applications include general purpose motor controls general purpose switching nxp bt137 600e triac 8a 600v to220ab