STMicroelectronics

BZW50-27B

BZW50-27B Description

The BZW50-27B from STMicroelectronics is a bidirectional 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 27V reverse standoff voltage (Typ) and a 30V minimum breakdown voltage. Its 62V maximum clamping voltage @ Ipp ensures effective suppression of transient spikes, while handling peak pulse currents up to 968A (8/20µs) and peak pulse power of 5000W (5kW). With a low capacitance of 3500pF @ 1MHz, it minimizes signal distortion, making it suitable for high-speed applications. The device is ROHS3 compliant, REACH unaffected, and features a through-hole mounting for easy integration.

BZW50-27B Features

• Bidirectional protection: Single-channel design for clamping both positive and negative transients.
• High surge capability: Handles 5000W peak pulse power and 968A surge current (8/20µs).
• Low clamping voltage: 62V max ensures minimal stress on protected components.
• Low capacitance: 3500pF @ 1MHz reduces signal integrity issues in high-frequency circuits.
• Wide operating range: 27V standoff voltage and 30V breakdown voltage for versatile use.
• Reliable construction: Through-hole package, MSL 1 (unlimited) moisture sensitivity, and ROHS3 compliance.

BZW50-27B Applications

• Power supply protection: Safeguards DC lines in industrial and consumer electronics.
• Communication systems: Protects interfaces (RS-485, Ethernet) from ESD and lightning-induced surges.
• Automotive electronics: Used in 12V/24V systems for load-dump and transient suppression.
• General-purpose circuits: Ideal for PCB-level protection in sensors, relays, and microcontrollers.

Conclusion of BZW50-27B

The BZW50-27B stands out for its high power handling, low clamping voltage, and bidirectional protection, making it a reliable choice for transient suppression in demanding environments. Its low capacitance ensures compatibility with high-speed signals, while STMicroelectronics' quality assurance guarantees long-term reliability. Whether for industrial, automotive, or communication systems, this TVS diode delivers robust performance and ease of integration.