1N4485

Single Zener Diodes Overview

The Microchip Technology 1N4485 is a military-qualified Zener diode designed for high-reliability applications. It operates within a temperature range of -65°C to 175°C and features a hermetically sealed void-less glass construction with an internal metallurgical bond. The device provides a nominal Zener voltage of 68V with a maximum dynamic impedance of 100 Ohms, ensuring stable voltage regulation in critical environments where failure is not tolerated.

Single Zener Diodes Feature Summary

• Military qualification compliant with MIL-PRF-19500/406 standards
• Hermetically sealed void-less glass construction
• Internal metallurgical bonding for structural integrity

Single Zener Diodes Applications

• High-reliability aerospace systems
• Military-grade electronic circuits
• Critical infrastructure power regulation

Single Zener Diodes Procurement Notes

Verify the specific suffix (e.g., US, D, CE3) to confirm package type and compliance status. Ensure procurement channels are authorized to guarantee authenticity and traceability required for military specifications. Confirm RoHS status as standard versions may not be compliant.

Single Zener Diodes Selection Notes

Select this component when strict environmental resilience and long-term stability are required. The 1.5W power rating supports moderate current loads. Verify that the 68V breakdown voltage aligns precisely with circuit design requirements before integration.

Single Zener Diodes Part Context

This part belongs to the 1N4460–1N4496 series of 1.5-watt Zener diodes. These devices are industry-recognized for their robustness in harsh conditions. The series offers various voltage selections from 3.3V to 200V with different tolerance options.

Single Zener Diodes Replacement Considerations

Direct substitutes include JAN1N4485 or 1N4485D depending on the required package style. Cross-reference MIL-PRF-19500/406 qualified equivalents from other manufacturers if Microchip supply is constrained.