STMicroelectronics

BZW50-33

BZW50-33 Description

The BZW50-33 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 33V reverse standoff voltage (Typ) and a minimum breakdown voltage of 36.6V. Its clamping voltage peaks at 76V under high-current conditions (e.g., 789A pulse current for 8/20µs surges), ensuring reliable overvoltage protection. With a peak pulse power rating of 5000W (5kW), this diode excels in dissipating high-energy transients. The device features low capacitance (5750pF @ 1MHz), minimizing signal distortion in high-frequency applications. Packaged in a through-hole tube, it complies with ROHS3 and REACH standards, making it environmentally friendly and suitable for industrial use.

BZW50-33 Features

• High Surge Handling: 789A (8/20µs) peak pulse current and 5kW peak power dissipation for robust transient suppression.
• Precise Voltage Clamping: 76V max clamping voltage ensures downstream circuit protection.
• Low Capacitance: 5750pF @ 1MHz minimizes signal integrity issues in high-speed applications.
• Reliable Construction: Unidirectional design for single-polarity protection, ideal for DC circuits.
• Compliance: ROHS3, REACH Unaffected, and EAR99 certified for global deployment.
• Wide Operating Range: 36.6V min breakdown voltage with a 33V reverse standoff for flexible integration.

BZW50-33 Applications

• Power Supply Protection: Safeguards AC/DC converters, voltage regulators, and switching power supplies from voltage spikes.
• Industrial Electronics: Protects PLCs, motor drives, and control systems from inductive load transients.
• Telecom/Networking: Shields communication lines (e.g., RS-485, Ethernet) from ESD and lightning-induced surges.
• Automotive Systems: Used in 12V/24V automotive electronics for load-dump and surge suppression.
• Consumer Electronics: Defends sensitive components in appliances and IoT devices from voltage transients.

Conclusion of BZW50-33

The BZW50-33 stands out as a high-performance TVS diode combining high surge capability, low capacitance, and precise clamping. Its unidirectional design and 5kW power rating make it ideal for DC circuit protection, while compliance with environmental standards ensures broad applicability. Whether in industrial, automotive, or telecom systems, this diode delivers reliable overvoltage protection with minimal signal degradation, making it a versatile choice for engineers prioritizing durability and performance.