1N4579/TR

Single Zener Diodes Overview

The Microchip Technology 1N4579/TR is a temperature-compensated Zener reference diode with a nominal voltage of 6.4 V and a maximum temperature coefficient of 0.0005 %/°C. It operates at a test current of 2 mA, features a maximum reverse current of 2 µA at 3 V, and has a dynamic impedance of 50 Ω. The device dissipates 500 mW, operates from -65°C to +175°C, and is housed in a DO-7 (DO-204AA) glass axial-leaded package.

Single Zener Diodes Feature Summary

• Temperature compensated design for minimal voltage change over broad operating ranges
• Internal metallurgical bonding for structural integrity
• Hermetically sealed glass case construction

Single Zener Diodes Applications

• Instrumentation requiring stable voltage references
• Precision circuit designs demanding low temperature drift
• Military qualification applications via JAN/JANTX prefixes

Single Zener Diodes Procurement Notes

Verify the TR suffix indicates tape-and-reel packaging per EIA-296 standards. Confirm that the base part number corresponds to the specified 2 mA test current and 0.0005 %/°C temperature coefficient. Ensure the ordering documentation matches the required military or commercial grade specifications if applicable.

Single Zener Diodes Selection Notes

Select this component when a 6.4 V reference with ultra-low temperature drift is required. The 2 mA operating point balances stability and power dissipation. Verify compatibility with existing through-hole mounting infrastructure due to the DO-7 package style.

Single Zener Diodes Part Context

This device belongs to the 1N4565 thru 1N4584A-1 series of zero-TC reference diodes. The series provides various temperature coefficients and operating currents for 6.4 V nominal voltages. The 1N4579 variant specifically targets the lowest drift category within the 2 mA operating current group.

Single Zener Diodes Replacement Considerations

Substitutes must match the 6.4 V nominal voltage, 2 mA test current, and 0.0005 %/°C temperature coefficient. Verify package compatibility with DO-7 dimensions.