This document provides a product specification for the Philips Semiconductors Triacs BT136 series E sensitive gate triacs. The triacs are intended for use in general purpose bidirectional switching and phase control applications where high sensitivity is required. Key specifications include maximum voltage ratings of 600-800V, RMS on-state current ratings of 4A, and sensitive gate triggering for applications requiring triggering in all four quadrants. Thermal, electrical, and mechanical characteristics are provided.