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1N4531UR
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Product Detailed Parameters
- Description：DIODE STANDARD 75V 125MA DO213AA
- Series：-
- Mfr：Microsemi Corporation
- Package：Bulk
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：75 V
- Current - Average Rectified (Io)：125mA
- Voltage - Forward (Vf) (Max) @ If：1.2 V @ 100 mA
- Speed：Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr)：20 ns
- Current - Reverse Leakage @ Vr：500 nA @ 75 V
- Capacitance @ Vr, F：-
- Mounting Type：Surface Mount
- Package / Case：DO-213AA
- Supplier Device Package：DO-213AA
- Operating Temperature - Junction：-65°C ~ 175°C
- Grade：-
- Qualification：-
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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.
Feature Summary
- Hermetically sealed construction with metallurgical bonding for reliability
- Optimized for high-speed switching operations
- Extended operating temperature range suitable for harsh environments
Applications
- High-speed digital logic circuits
- Clamping and protection in RF systems
- Pulse generation and shaping networks
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.
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.
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.
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.
