1N4579A

Single Zener Diodes Overview

The Microchip Technology 1N4579A 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 2.0 mA, featuring a maximum reverse current of 2 µA at 3 V and a dynamic impedance of 50 Ohms. The device dissipates 500 mW and functions within a temperature range of -55°C to +100°C. Packaged in a hermetically sealed glass DO-7 (DO-204AA) axial leaded case, it provides stable voltage references for precision applications.

Single Zener Diodes Feature Summary

• Temperature compensated design ensures minimal voltage change across operating temperatures
• Internal metallurgical bonding enhances structural integrity and reliability
• Hermetically sealed glass case protects against environmental factors
• ESD nonsensitive per MIL-STD-750 Method 1020

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 specific manufacturer source, as the datasheet originates from Microsemi while the brand is listed as Microchip Technology. Confirm package type availability, as DO-7 is specified but other variants exist. Check for military suffixes if radiation hardening or specific qualification levels are required. Ensure ordering tolerance suffixes match design needs.

Single Zener Diodes Selection Notes

Select this component when a 6.4 V reference with ultra-low temperature drift is necessary. The 2.0 mA test current balances power dissipation and stability. Consider tighter tolerance suffixes if standard specifications are insufficient. Verify thermal management requirements, as optimal stability occurs below 30 mW power dissipation despite higher ratings.

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. The 1N4579A specifically targets high-stability applications requiring the lowest available temperature coefficient in its class.

Single Zener Diodes Replacement Considerations

Check for JAN, JANTX, or JANTXV prefixed equivalents for military qualifications. Surface mount alternatives may be found in DO-213AA packages with UR-1 suffixes.