STMicroelectronics

SMBJ170CA-TR

SMBJ170CA-TR Description

The SMBJ170CA-TR from STMicroelectronics is a bidirectional, surface-mount TVS diode designed for transient voltage suppression (TVS) in general-purpose applications. Part of the SMBJ, TRANSIL™ series, it offers robust protection with a 170V reverse standoff voltage (V_RWM) and a minimum breakdown voltage (V_BR) of 189V. Its clamping voltage (V_C) peaks at 275V at the specified pulse current (I_PP = 2.2A), ensuring reliable overvoltage protection. Packaged in a Tape & Reel (TR) format, it complies with RoHS3 and REACH standards, making it suitable for modern electronics manufacturing.

SMBJ170CA-TR Features

• Bidirectional Protection: Single-channel design for clamping both positive and negative transients.
• High Power Handling: 600W peak pulse power dissipation (10/1000µs waveform) ensures durability against surges.
• Low Clamping Ratio: Efficiently limits voltage spikes to 275V, safeguarding sensitive components.
• Surface-Mount (SMB) Package: Compact footprint ideal for space-constrained PCB designs.
• Wide Operating Range: 189V–275V breakdown-to-clamping range for versatile circuit protection.
• Industry Compliance: RoHS3, REACH Unaffected, and ECCN EAR99 certified for global use.

SMBJ170CA-TR Applications

• Industrial Electronics: Protects control systems, PLCs, and motor drives from voltage transients.
• Telecom Infrastructure: Shields base stations and networking equipment from ESD and lightning-induced surges.
• Power Supplies: Safeguards AC/DC converters and SMPS in high-voltage environments.
• Automotive Systems: Used in 12V/24V automotive buses where load-dump protection is critical.
• Consumer Electronics: Ideal for appliances requiring IEC 61000-4-5 surge compliance.

Conclusion of SMBJ170CA-TR

The SMBJ170CA-TR excels in high-energy transient suppression with its bidirectional clamping, low leakage, and robust power handling. Its surface-mount SMB package and wide voltage range make it a superior choice over unidirectional or lower-rated TVS diodes. Engineers favor this model for cost-effective, reliable protection in industrial, automotive, and telecom applications, where repeatable surge performance is critical. STMicroelectronics’ reputation for quality further ensures its suitability for mission-critical designs.