BUY P6KE550A https://www.utsource.net/itm/p/11206882.html
TVS Diode
Description: The P6KE550A is a unidirectional Transient Voltage Suppressor (TVS) diode designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. Features: 600W peak pulse power dissipation 5.5V working peak reverse voltage Low leakage current Fast response time High surge capability Low clamping voltage Applications: Automotive electronics Data and signal lines Industrial electronics Telecommunications (For reference only)