1N6486US

Overview

The Microchip Technology 1N6486US is a surface mount Zener voltage regulator qualified to MIL-PRF-19500/406. It features a hermetically sealed void-less glass package with an internal metallurgical bond. The device provides a nominal Zener voltage of 3.6 V at a test current of 69 mA, with a maximum dynamic impedance of 10 Ohms and a maximum reverse current of 50 µA. It supports a steady-state power dissipation of 1.5 W and operates within a junction temperature range of -65°C to +175°C.

Feature Summary

• Hermetically sealed void-less glass construction with tungsten slugs for high reliability
• Internal Category III metallurgical bonds ensuring robust mechanical integrity
• Triple-layer passivation providing enhanced environmental protection
• Inherently radiation hard design suitable for demanding environments

Applications

• High-reliability military and aerospace circuits
• Voltage regulation in systems where failure cannot be tolerated
• Space-grade electronic assemblies requiring radiation hardness
• Precision reference voltage generation in extreme temperature ranges

Procurement Notes

Verify the specific qualification level (JAN, JANTX, JANTXV, or JANS) required for your application, as this affects performance specifications and availability. Confirm RoHS compliance status, noting that compliant versions are typically commercial grade only. Ensure ordering suffixes match the desired tolerance and packaging format. Consult official documentation for lead times and factory-specific ordering requirements.

Selection Notes

Select the 1N6486US when a 3.6 V Zener voltage is needed in a surface mount form factor with strict reliability requirements. Consider the 1.5 W power rating and thermal resistance characteristics for heat dissipation planning. Evaluate the operating temperature range against system constraints. Compare alternative part numbers within the series if different voltage levels or tolerance grades are acceptable.

Part Context

This component belongs to the 1N6485US through 1N6491US series of 1.5 Watt glass Zener diodes. These devices share the same SQ-MELF package and hermetic construction but vary in nominal voltage and test current. The series is designed to replace traditional axial-lead JEDEC registered diodes in surface mount applications while maintaining military-grade durability and performance standards.

Replacement Considerations

Direct replacements include other members of the 1N6485US–1N6491US series with matching voltage ratings. Verify package compatibility and qualification levels when substituting. Commercial equivalents may lack hermetic sealing or radiation hardness.