1N4531UR

Single Diodes Overview

The Microsemi Corporation 1N4531UR is a small signal switching diode designed for high-speed applications. It features a maximum DC reverse voltage of 75 V and an average rectified forward current of 125 mA. The device exhibits a typical reverse recovery time of 20 ns and a forward voltage drop of 1.2 V at 100 mA. It operates within a junction temperature range of -65°C to 175°C. The component is available in the DO-213AA (SMB) surface mount package, providing a compact solution for circuit integration.

Single Diodes Feature Summary

• Hermetically sealed construction with metallurgical bonding for reliability
• Optimized for high-speed switching operations
• Extended operating temperature range suitable for harsh environments

Single Diodes Applications

• High-speed digital logic circuits
• Clamping and protection in RF systems
• Pulse generation and shaping networks

Single Diodes Procurement Notes

Verify the specific suffix (e.g., UR, TR) to confirm package type and reel configuration. Confirm RoHS compliance status as standard versions may not meet current environmental directives. Check lifecycle status as many variants are obsolete. Ensure supplier documentation matches the exact part number to avoid pinout mismatches between axial and surface mount versions.

Single Diodes Selection Notes

Select this component when hermetic sealing and wide temperature tolerance are required. Compare reverse recovery time against circuit speed requirements. Verify that the 75 V reverse voltage rating exceeds peak inverse voltages in the application. Consider the DO-213AA footprint constraints during PCB layout design.

Single Diodes Part Context

The 1N4531 series belongs to Microsemi's military-grade switching diode family. Variants like JAN1N4531UR adhere to MIL-PRF-19500/116 specifications. These devices are engineered for aerospace and defense applications requiring high reliability. The UR designation typically indicates a surface mount variant within this heritage line.

Single Diodes Replacement Considerations

Direct substitutes include other hermetically sealed switching diodes meeting MIL-PRF-19500/116. Verify electrical parameters such as 75 V Vr and 125 mA Io match exactly. Surface mount equivalents must fit the DO-213AA footprint. Axial packages like 1N4531 require mechanical adaptation.