BYV37-TR

Overview

The BYV37-TR is a fast avalanche sinterglass diode manufactured by Vishay General Semiconductor. It features a single configuration with an 800 V reverse voltage rating and a 2 A forward current capacity. The device exhibits a maximum forward voltage drop of 1.1 V at 1 A and a reverse leakage current of 5 uA. Key electrical parameters include a surge current capability of 50 A and a recovery time of 300 ns. It is housed in a through-hole SOD-57 package, designed for high-reliability applications requiring robust avalanche characteristics.

Feature Summary

• Fast avalanche sinterglass construction for enhanced ruggedness
• Glass passivated junction ensuring long-term stability
• High surge current handling capability

Applications

• High-voltage rectification circuits
• Flyback diodes in inductive load switching
• General-purpose power supply designs

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm packaging and tape-and-reel specifications. Ensure the ordering part number matches the required SOD-57 through-hole variant. Cross-reference datasheet revisions to confirm electrical limits remain unchanged. Confirm availability directly with authorized distributors as stock levels fluctuate.

Selection Notes

Select this component when an 800 V blocking voltage and 2 A continuous current are required in a compact axial-like form factor. The fast recovery characteristic makes it suitable for higher frequency switching applications compared to standard rectifiers. Consider the avalanche rating if the circuit experiences significant transient voltage spikes during commutation.

Part Context

The BYV37-TR belongs to the BYV37/BYV38 series of fast avalanche sinterglass diodes from Vishay. These devices are engineered for high-reliability power applications where standard glass-passivated diodes may fail under avalanche stress. The series offers a balance of high voltage blocking and moderate current handling in a cost-effective through-hole package.

Replacement Considerations

Check for direct substitutes within the BYV37 series or equivalent 800 V/2 A fast recovery diodes from other manufacturers. Verify pinout compatibility and thermal dissipation requirements before substitution. Ensure the replacement device meets or exceeds the 300 ns recovery time and 50 A surge current ratings.