BYW172D-TR

Overview

The BYW172D is a fast avalanche sinterglass diode from Vishay Semiconductors, featuring a 200 V repetitive peak reverse voltage and a 3 A average forward current rating. It utilizes a glass passivated junction within a hermetically sealed SOD-64 package with plated axial leads. The device exhibits low reverse current of 1 µA at rated voltage and soft recovery characteristics with a maximum reverse recovery time of 100 ns. It supports a peak forward surge current of 100 A and operates across a junction temperature range of -55 °C to +175 °C.

Feature Summary

• Glass passivated junction for enhanced reliability
• Hermetically sealed sinterglass package construction
• Soft recovery characteristics suitable for high-speed switching
• High pulse current capability with low forward voltage drop

Applications

• Fast rectification in switch-mode power supplies (SMPS)
• General-purpose high-speed rectification circuits
• Free-wheeling diodes in inductive load applications

Procurement Notes

Verify the specific ordering code suffix against the manufacturer's documentation to confirm packaging format and quantity. Ensure the component meets RoHS compliance requirements if applicable to your manufacturing process. Cross-reference the part number with authorized distributors to confirm current availability status and lead times before finalizing procurement plans.

Selection Notes

Select this component when a 200 V reverse voltage rating and 3 A continuous current capacity are required in a compact axial leaded form factor. Consider the SOD-64 package dimensions and thermal resistance characteristics for PCB layout planning. Evaluate the 100 ns reverse recovery time against circuit switching frequencies to ensure adequate performance margins.

Part Context

This component belongs to the BYW172 series, which includes variants with different reverse voltage ratings such as the BYW172F (300 V) and BYW172G (400 V). All models share identical physical packages and average forward current specifications while differing primarily in their breakdown voltage capabilities.

Replacement Considerations

Direct substitutes include the BYW172F and BYW172G from the same Vishay series, provided the application voltage does not exceed their respective ratings.