1N4971USE3/TR

Single Zener Diodes Overview

The Microchip Technology 1N4971USE3/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 36 V. It operates within a test current range of 30 mA and maintains a maximum dynamic impedance of 11 Ohms at this point. The device dissipates up to 5 Watts of power and exhibits a maximum reverse leakage current of 2 µA at 27.4 V. Its operating temperature spans from -65°C to +175°C, featuring a standard voltage tolerance of ±5%.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction for high reliability
• Internal metallurgical bonds ensuring robust physical integrity
• Triple-layer passivation providing enhanced environmental protection

Single Zener Diodes Applications

• High-reliability military circuits requiring MIL-PRF-19500/356 compliance
• Voltage regulation in aerospace systems where failure is not tolerated
• Power supply reference stages in radiation-hardened environments

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and testing standards. Ensure the component meets the required military qualification levels before integration into sensitive designs. Cross-reference datasheet revisions to validate electrical characteristics and mechanical dimensions for your specific application requirements.

Single Zener Diodes Selection Notes

Select this component when a surface mount solution is required for high-power voltage regulation. Consider the thermal resistance and derating curves if operating near maximum junction temperatures. Evaluate the package footprint compatibility with existing PCB layouts and ensure the lead finish matches soldering process constraints.

Single Zener Diodes Part Context

This part belongs to the 1N49xxUS series of 5-watt Zener diodes manufactured by Microsemi (now Microchip). These devices are designed for demanding applications requiring hermetic sealing and high surge current handling capabilities. The series offers a wide range of voltage options with standardized tolerances suitable for precision regulation tasks.

Single Zener Diodes Replacement Considerations

Direct replacements include other 1N4971 variants such as JANS1N4971US or MNS1N4971US, provided they match the D-5B package and electrical specifications. Verify that substitute parts maintain the same hermetic seal and metallurgical bond quality for equivalent reliability performance.