SMBJ170A-AT 600W 170V TVS Diode SMBJ-AT | RUILON

The SMBJ170A-AT is a 600W transient voltage suppressor (TVS) diode designed to protect electronic circuits from electrostatic discharge (ESD), lightning surges, and fast transient voltage spikes. With a 170V standoff voltage, it delivers reliable clamping performance while maintaining stable operation for higher-voltage power and signal line applications.

Packaged in a compact SMB (DO-214AA) surface-mount form factor, it is optimized for high-density PCB layouts and automated assembly processes. The device features ultra-fast response time, enabling immediate suppression of transient overvoltage events to safeguard ICs, communication interfaces, and control electronics. Its low leakage current ensures minimal power loss during normal operation, while the glass-passivated junction structure provides strong long-term reliability and thermal stability under harsh electrical conditions.

The 170V rating offers maximum voltage tolerance within the SMBJ-AT 600W series, making it suitable for demanding applications requiring robust surge protection and wide operating margins across industrial, telecom, and consumer electronics environments.

Key Features

• 600W peak pulse power capability
• 170V standoff voltage for high-voltage applications
• Fast response to ESD and surge transients
• Low leakage current for 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 and control systems
• Telecom and networking equipment
• Consumer electronics protection
• Data and signal line ESD protection
• LED lighting and driver circuits
• Automotive and industrial electronic systems