BAV21TR

Overview

The BAV21TR is a small signal switching diode manufactured by onsemi, housed in a DO-35 through-hole package. It features a peak reverse voltage of 250 V and a maximum forward current of 200 mA. The device supports a surge current of 4 A with a reverse recovery time of 50 ns. Electrical characteristics include a forward voltage of 1.25 V and a reverse current of 100 nA. Operating temperatures range from -65 C to +175 C. This component is currently classified as obsolete.

Feature Summary

• High voltage capability for robust switching applications
• Fast reverse recovery performance for signal integrity
• Through-hole mounting for standard PCB integration

Applications

• General purpose signal switching circuits
• Protection against voltage spikes in low power systems
• Clamping applications in consumer electronics

Procurement Notes

Verify the obsolete status before design finalization. Confirm availability through secondary distributors or surplus channels. Ensure alternative components are identified for long-term production stability. Check RoHS compliance documentation for specific manufacturing dates. Validate package dimensions against existing board layouts.

Selection Notes

Consider the DO-35 package constraints for space-limited designs. Evaluate the 250 V rating against circuit operating voltages. Assess thermal management requirements given the temperature range. Compare recovery times with faster alternatives if high-frequency operation is needed. Verify lead compatibility with existing assembly processes.

Part Context

This component belongs to the BAV21 series of small signal switching diodes. It serves as a discrete solution for basic rectification and switching tasks. The DO-35 package offers mechanical durability for through-hole applications. It represents an older generation of silicon diode technology.

Replacement Considerations

Public confirmed substitute part numbers: BAV21.