BUY BYV38-TAP https://www.utsource.net/itm/p/1715146.html
Fast Silicon Mesa Rectifiers
Description: The BYV38-TAP is a high voltage fast-switching NPN power transistor in a SOD-57 (SMD) package. Features: - High voltage: 800V - High current: 5A - Low collector-emitter saturation voltage - High switching speed - High frequency operation Applications: - Switching power supplies - Motor control - Lighting control - High voltage switching applications (For reference only)