1N4579

Single Zener Diodes Overview

The Microchip Technology 1N4579 is a 6.4 V temperature compensated Zener reference diode housed in a DO-7 (DO-204AA) glass axial-leaded package. It operates at a test current of 2.0 mA with a maximum reverse current of 2 µA at 3 V and a dynamic impedance of 50 Ohms. The device provides a voltage temperature coefficient of 0.0005 %/°C, ensuring minimal voltage change across its operating range of -55°C to +100°C. It supports a DC power dissipation of 500 mW and withstands solder temperatures up to 260°C for 10 seconds.

Single Zener Diodes Feature Summary

• Provides nominal 6.4 V reference voltage with tight tolerance options
• Features internal metallurgical bonding for enhanced reliability
• Offers low temperature coefficient for stable performance over broad ranges
• Hermetically sealed glass case construction

Single Zener Diodes Applications

• Instrumentation circuits requiring precise voltage references
• Circuit designs demanding minimal voltage change with temperature
• Military qualification applications via JAN/JANTX prefixes

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements for military qualifications or tighter voltage tolerances when ordering. Confirm package type availability as surface mount equivalents exist under different part numbers. Ensure compliance with RoHS status if required by your application standards. Check datasheet notes regarding radiation hardened variants designated with an RH prefix instead of 1N.

Single Zener Diodes Selection Notes

Select this component for applications requiring high stability with a 0.0005 %/°C temperature coefficient. Consider the 2.0 mA test current for optimal voltage-temperature stability while maintaining power dissipation below 30 mW. Evaluate the DO-7 package dimensions against board space constraints. Review available tolerance suffixes if tighter than standard specifications are needed.

Single Zener Diodes Part Context

Part of the 1N4565 through 1N4584A-1 series of Zero-TC Reference Diodes. This series offers various operating currents and temperature coefficients to suit different precision requirements. The 1N4579 specifically targets applications needing the lowest temperature drift within the 2.0 mA operating current category.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available in the DO-213AA package by adding the UR-1 suffix to the part number. Military qualified versions can be identified by adding JAN, JANTX, or JANTXV prefixes. Radiation hardened devices use the RH prefix instead of 1N.