BUY SM6T18A https://www.utsource.net/itm/p/11612512.html

Description: 6.0A Surface Mount Glass Passivated Junction Transient Voltage Suppressor Features: - Glass passivated junction - Low profile surface mount package - 600W peak pulse power capability on 10/1000μs waveform - Excellent clamping capability - Low zener impedance - Fast response time: typically less than 1.0ps from 0V to VBR for unidirectional and 5.0ns for bidirectional Applications: - Automotive electronics - Telecommunications - Computer peripherals - Portable electronics - Battery powered equipment (For reference only)