1N4463

Single Zener Diodes Overview

The Microchip Technology 1N4463 is a military-qualified, hermetically sealed glass Zener diode with a nominal voltage of 8.2 V and a test current of 31 mA. It features a maximum dynamic impedance of 3 Ohms at the test point and a maximum knee impedance of 0.5 Ohms. The device supports a steady-state power dissipation of 1.5 W and operates within a junction temperature range of -65°C to +175°C. It utilizes a DO-41 axial lead package.

Single Zener Diodes Feature Summary

• Hermetically sealed void-less glass construction with internal metallurgical bonds for high reliability.
• Qualified per MIL-PRF-19500/406 for JAN, JANTX, JANTXV, and JANS levels.
• Inherently radiation hard and non-sensitive to electrostatic discharge.

Single Zener Diodes Applications

• High-reliability applications where failure cannot be tolerated
• Voltage regulation over broad operating current and temperature ranges
• Military and aerospace electronic systems

Single Zener Diodes Procurement Notes

Verify the specific reliability level suffix (JAN, JANTX, JANTXV, or JANS) required for your application, as these denote different qualification standards under MIL-PRF-19500/406. Confirm RoHS compliance status if applicable, noting that commercial versions may differ from military grades. Ensure the ordering part number matches the exact tolerance and package requirements specified in the design documentation.

Single Zener Diodes Selection Notes

Select this component for designs requiring robust voltage regulation in harsh environments. The 1.5 W power rating allows for significant current handling compared to lower-power equivalents. Consider the thermal resistance characteristics when designing heat dissipation strategies. Verify that the 8.2 V breakdown voltage aligns with the circuit's reference needs and that the DO-41 package fits the available board space.

Single Zener Diodes Part Context

This device belongs to the 1N4460–1N4496 series of 1.5 Watt glass Zener diodes manufactured by Microchip Technology. These components are industry-recognized for their durability and are designed to meet stringent military specifications. The series offers a wide selection of voltage ratings from 3.3 to 200 volts, providing flexibility for various high-power regulation tasks.

Single Zener Diodes Replacement Considerations

Direct replacements must match the 8.2 V nominal voltage, 1.5 W power rating, and DO-41 package. Military-grade substitutes must also hold MIL-PRF-19500/406 qualification. Commercial equivalents lacking hermetic sealing or radiation hardness should only be used if environmental conditions permit.