1N4468

Single Zener Diodes Overview

The Microchip Technology 1N4468 is a 1.5-watt Zener voltage regulator diode with a nominal breakdown voltage of 13 volts and a standard tolerance of ±5%. It features a maximum dynamic impedance of 8 ohms at a test current of 19 mA, operating within a junction temperature range of -65°C to +175°C. The device utilizes a hermetically sealed voidless glass construction with internal metallurgical bonds, available in axial DO-41 or surface mount D-5A MELF packages.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass package with internal metallurgical bonding for robust construction
• Military qualification per MIL-PRF-19500/406 across JAN, JANTX, JANTXV, and JANS levels
• Inherently radiation hard design suitable for high-reliability environments
• Triple-layer passivation providing non-sensitive ESD protection

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability aerospace and defense circuits where failure cannot be tolerated
• Radiation-hardened 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 whether RoHS compliance is necessary, noting that compliant versions are restricted to commercial grade only. Ensure the package type matches your assembly requirements, as both axial leaded and surface mount options exist within this series.

Single Zener Diodes Selection Notes

Select the 1N4468 when a precise 13-volt reference is needed with low dynamic impedance. Consider the thermal resistance and power derating curves if operating near the maximum junction temperature limit. Verify that the chosen reliability level meets the environmental stress screening requirements of the target system, particularly regarding radiation hardness and ESD robustness.

Single Zener Diodes Part Context

This component belongs to the 1N4460–1N4496 series of industry-recognized 1.5-watt Zener regulators. The series offers extensive voltage selections from 3.3 to 200 volts with standard 5% tolerance. It serves as a bridge between commercial JEDEC registered devices and military-grade components, providing hermetic sealing and metallurgical bonding for demanding applications.

Single Zener Diodes Replacement Considerations

Direct substitutes include other 1N4468 variants with different reliability suffixes such as JAN1N4468, JANTX1N4468, or JANTXV1N4468. Surface mount equivalents are available in the 1N4468US series. Commercial grade versions without military qualification may also serve as replacements if environmental constraints allow.