STMicroelectronics

BZW50-39

BZW50-39 Description

The BZW50-39 from STMicroelectronics is a unidirectional Zener-type TVS diode designed for general-purpose transient voltage suppression in electronic circuits. Part of the BZW50, TRANSIL™ series, it offers robust protection with a reverse standoff voltage of 39V (Typ) and a minimum breakdown voltage of 43.3V. Its peak pulse power dissipation of 5000W (5kW) and clamping voltage of 90V @ Ipp ensure reliable performance against high-energy transients. The diode features a low capacitance of 4800pF @ 1MHz, making it suitable for signal line protection without compromising signal integrity. Packaged in a through-hole format, it is RoHS3 compliant and REACH unaffected, meeting stringent environmental standards.

BZW50-39 Features

• High Surge Handling: Capable of 667A (8/20µs) peak pulse current, ideal for harsh electrical environments.
• Low Clamping Ratio: Efficiently limits voltage spikes to 90V, protecting downstream components.
• Low Capacitance: 4800pF @ 1MHz minimizes signal distortion in high-speed circuits.
• Robust Construction: Through-hole mounting ensures mechanical stability and ease of assembly.
• Compliance: ROHS3 compliant, REACH unaffected, and EAR99 classified for global usability.
• Reliability: MSL 1 (Unlimited) rating ensures long shelf life and handling flexibility.

BZW50-39 Applications

• Industrial Electronics: Protects control systems, PLCs, and sensors from voltage transients.
• Power Supplies: Safeguards DC/DC converters and regulators against inductive load switching spikes.
• Automotive Systems: Used in 12V/24V automotive networks to mitigate load-dump and ESD events.
• Telecom Equipment: Shields communication lines from lightning-induced surges.
• Consumer Electronics: Provides ESD protection for interfaces like USB, HDMI, and RS-232.

Conclusion of BZW50-39

The BZW50-39 stands out for its high power dissipation, low clamping voltage, and low capacitance, making it a versatile choice for transient protection across industries. Its unidirectional design and compliance with environmental standards ensure reliability in demanding applications. Whether for industrial, automotive, or telecom systems, this TVS diode delivers robust performance and component longevity, reducing downtime and repair costs.