1N4468US

Single Zener Diodes Overview

The Microchip Technology 1N4468US is a surface mount Zener voltage regulator with a nominal breakdown voltage of 13.0 V and a maximum dynamic impedance of 8 Ohms at a test current of 19 mA. It features a voidless hermetically sealed glass MELF (D-5A) package, rated for a steady-state power dissipation of 1.5 W at 25°C ambient temperature. The device operates within a junction and storage temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction using internal metallurgical bonds
• Triple-layer passivation for robust protection
• Qualified per MIL-PRF-19500/406 military standards
• Inherently radiation hard

Single Zener Diodes Applications

• High-reliability applications where failure cannot be tolerated
• Voltage regulation over broad operating current and temperature ranges
• ESD non-sensitive environments per MIL-STD-750 method 1020

Single Zener Diodes Procurement Notes

Verify the specific reliability level required, as the base part number corresponds to commercial grade while JAN, JANTX, JANTXV, and JANS levels are available variants. Confirm RoHS compliance status if mandated, noting that compliant versions are restricted to commercial grades only. Ensure the D-5A MELF footprint matches the design layout before ordering.

Single Zener Diodes Selection Notes

Select this component for designs requiring high thermal stability and radiation hardness in a compact surface mount form factor. The 1.5 W power rating supports significant current handling compared to lower-power equivalents. Consider the 13.0 V nominal voltage and 8 Ohm impedance characteristics to ensure compatibility with the target circuit's regulation requirements.

Single Zener Diodes Part Context

This device belongs to the 1N4460US through 1N4496US series of industry-recognized 1.5 Watt Zener voltage regulators. The series offers extensive voltage selections from 3.3 to 200 Volts with standard 5% tolerance, alongside tighter 1% and 2% options. These regulators serve as surface mount equivalents to popular JEDEC registered axial-lead series.

Single Zener Diodes Replacement Considerations

JAN1N4468CUS

Single Zener Diodes FAQ

What is the maximum continuous Zener current for the 1N4468US?

The maximum continuous regulator current (IZM) is 110 mA.

How is polarity indicated on the 1N4468US package?

Polarity is indicated by a band marking the cathode end of the device.