1N3156UR-1

Overview

The Microchip Technology 1N3156UR-1 is a hermetically sealed Zener diode designed for high-reliability applications. It features an 8.4V nominal Zener voltage with a tolerance of ±1%. The device operates at a test current of 10mA and dissipates up to 0.5W of power. Key electrical characteristics include a maximum dynamic impedance of 15 ohms and a leakage current of 10µA at 5.5V. It utilizes a DO-7 (DO-204AA) glass axial package.

Feature Summary

• Hermetically sealed construction for environmental protection
• Temperature compensated design for stability
• High-reliability military-grade qualification

Applications

• Military aerospace systems
• Spacecraft electronics
• High-reliability industrial equipment

Procurement Notes

Verify the specific suffix UR-1 against official Microchip documentation to confirm hermetic sealing and temperature compensation status. Ensure the procurement channel provides traceability certificates required for defense or aerospace contracts. Confirm RoHS exemption status as these parts often contain lead.

Selection Notes

Select this component when hermetic sealing and strict voltage tolerance are mandatory. The DO-7 package suits through-hole mounting in constrained spaces. Verify that the 0.5W power rating meets the thermal requirements of the target circuit under all operating conditions.

Part Context

This part belongs to the 1N3156 series of Zener diodes manufactured by Microchip Technology. The 'UR' suffix typically denotes a specific reel or packaging configuration, while '-1' indicates the ±1% voltage tolerance grade. These components are standard replacements for legacy MIL-SPEC diodes in modern designs requiring proven reliability.

Replacement Considerations

• 1N3156A-1-1%
• 1N3156E3