SMBJ28A-AT 600W 28V TVS Diode SMBJ-AT | RUILON

The SMBJ28A-AT is a 600W transient voltage suppressor (TVS) diode designed to protect sensitive electronic circuits from ESD, lightning surges, and fast switching transients. With a 28V standoff voltage, it ensures reliable overvoltage clamping while maintaining stable operation margin for low-voltage power and signal line applications.

Housed in a compact SMB (DO-214AA) surface-mount package, it is optimized for high-density PCB layouts and automated assembly processes. The device features ultra-fast response time, enabling immediate suppression of transient voltage spikes to protect ICs, communication interfaces, and control systems. Its low leakage current improves energy efficiency during normal operation, while the glass-passivated junction structure provides strong long-term reliability and thermal stability.

The 28V rating delivers higher voltage tolerance, making it suitable for modern electronic systems that require robust surge protection with wider operating margins across industrial, telecom, and consumer applications.

Key Features

• 600W peak pulse power capability
• 28V standoff voltage for higher operating margin
• Fast response to ESD and surge transients
• Low leakage current for energy-efficient operation
• High surge absorption (8/20 µs waveform)
• SMB (DO-214AA) compact SMD package
• Glass-passivated junction for high reliability
• Bidirectional protection design

Applications

• Power supply surge and transient protection
• Industrial automation systems
• Telecom and networking equipment
• Consumer electronics protection
• Data and signal line ESD protection
• LED lighting and driver circuits
• Automotive low-voltage electronic systems