The BT151X-650R,127 is an thyristor module produced by NXP. It is a 600 V AC/DC blocking voltage, 650 A continuous current, and 5kA I2t surge current rated device. It includes a low-profile, built-in heatsink, fast switching times, and a high-temperature creeping distance. It features a self-extinguishing plastic package with vertical terminals and a rugged construction. The BT151X-650R,127 is designed for general purpose AC and DC applications such as motor control, welding, automation, and rectification. The module is perfect for harsh environments due to its high creepage distance and exceptional power cycling performance.