This document is about MCR08BT1/D MCR08B, MCR08M sensitive gate silicon controlled rectifiers. These products are designed for line powered consumer applications such as relay and lamp drivers, small motor controls, gate drivers for larger thyristors, and sensing and detection circuits. The product features are sensitive gate trigger current, blocking voltage up to 600V, glass passivated surface for reliability and uniformity, surface mount package, and lead-free packages are available.