1N3049B-1

Overview

The Microchip Technology 1N3049B-1 is a hermetically sealed silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 160 V with a tolerance of 5%. The device operates within a power dissipation rating of 1 W and supports a maximum reverse current of 2 uA. It utilizes a DO-202AA (DO-13) metal case package, suitable for through-hole mounting. The component maintains functionality across an extended temperature range from -65 C to +175 C, ensuring reliability in demanding environments.

Feature Summary

• Hermetically sealed construction using a metal glass case for environmental protection
• High-voltage regulation capability at 160 V with tight 5% tolerance
• Extended thermal stability supporting operation up to 175 C

Applications

• Military aerospace electronic systems requiring radiation and moisture resistance
• High-reliability industrial power supply voltage references
• Avionics circuit protection and regulation modules

Procurement Notes

Verify the specific suffix designation against the manufacturer's datasheet to confirm exact electrical tolerances and testing standards. Ensure the procurement specification explicitly requires hermetic sealing and the DO-202AA package form factor. Confirm compliance with relevant military or space-grade quality certifications prior to ordering.

Selection Notes

Select this component when high-voltage precision regulation is required in harsh environments. The hermetic metal package provides superior protection compared to standard plastic equivalents. Evaluate the 1 W power dissipation limit against the expected load current to ensure adequate thermal management without external heatsinking.

Part Context

This part belongs to the 1N3049 series of high-voltage Zener diodes manufactured by Microchip Technology. It serves as a specialized replacement for legacy components in defense and aerospace equipment. The series is characterized by its robust metal-glass encapsulation and stable performance under extreme thermal conditions.

Replacement Considerations

Direct substitutes include other hermetically sealed 160 V Zener diodes in the DO-202AA package. Verify that alternative parts meet the same 1 W power rating and 5% voltage tolerance specifications.