1N6488

Overview

The Microchip Technology 1N6488 is a military-qualified Zener voltage regulator diode designed for high-reliability applications. It features a void-less hermetically sealed glass package with an internal metallurgical bond, ensuring robust construction. The device operates within a junction temperature range of -65°C to +175°C and provides a nominal Zener voltage of 4.3 V at a test current of 58 mA. It exhibits a maximum dynamic impedance of 9 Ohms and supports a steady-state power dissipation of 1.5 W.

Feature Summary

• Hermetically sealed void-less glass construction with tungsten slugs
• Internal Category III metallurgical bonds for enhanced structural integrity
• Triple-layer passivation for environmental protection
• Qualified per MIL-PRF-19500/406 standards

Applications

• High-reliability aerospace systems
• Military defense electronics
• Critical voltage regulation circuits
• Radiation-hardened environments

Procurement Notes

Verify the specific reliability level (JAN, JANTX, JANTXV, or JANS) required for your application when ordering. Confirm RoHS compliance status, as commercial versions may differ from military qualifications. Ensure lead length specifications match your assembly requirements, as thermal performance depends on proper mounting dimensions.

Selection Notes

Select this component for designs requiring strict voltage stability under extreme thermal conditions. The 4.3 V output is suitable for low-voltage reference applications. Consider the 1.5 W power rating and thermal resistance characteristics for heat dissipation planning in enclosed spaces.

Part Context

This part belongs to the 1N6485–1N6491 series of 1.5 Watt glass Zener diodes. These devices are industry-recognized for their durability and are often used where failure is not an option. The series offers various voltage options from 3.3 to 200 volts with standard 5% tolerance.

Replacement Considerations

Direct replacements must meet MIL-PRF-19500/406 qualification levels. Verify that substitute parts maintain the same hermetic sealing and metallurgical bond category to ensure equivalent radiation hardness and mechanical robustness.