The BT138B-800E,118 part of NXP is a high voltage, low on-state resistance Thyristor. It is a high voltage, low on-state resistance, general purpose Thyristor with an average on-state current rating of up to 800A at a blocking voltage of up to 800V. It is designed for high frequency switching applications which require low conduction and switching losses. It is suitable for applications such as soft starter rectifier, AC load switch, and AC and DC chopper. The BT138B-800E,118 is RoHS and Pb-Free.