1N4566

Single Zener Diodes Overview

The Microchip Technology 1N4566 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 0.5 mA with a maximum voltage temperature coefficient of 0.005%/°C and dynamic impedance of 200 Ohms. The device supports an operating temperature range from -55°C to +100°C, features internal metallurgical bonding, and offers military qualification options via JAN, JANTX, or JANTXV prefixes.

Single Zener Diodes Feature Summary

• Provides minimal voltage change over a broad operating temperature range for instrumentation applications
• Features internal metallurgical bonding within a hermetically sealed glass case
• Offers flexible axial-leaded mounting terminals suitable for through-hole integration

Single Zener Diodes Applications

• Precision instrumentation circuits requiring stable voltage references
• Temperature-compensated power supply designs
• Military-grade electronic systems requiring MIL-PRF-19500/452 compliance

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements for military qualification levels such as JAN, JANTX, or JANTXV when ordering. Confirm that the DO-7 package dimensions align with your PCB layout constraints. Ensure the selected variant meets the required operating temperature range for your specific application environment before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a nominal 6.4 V reference with low temperature drift is required. The 0.5 mA test current setting makes it suitable for low-power applications. Consider tighter tolerance suffixes if standard voltage accuracy is insufficient. Verify compatibility with existing circuit biasing networks designed for this specific test current level.

Single Zener Diodes Part Context

This device belongs to the 1N4565 through 1N4584A-1 series of zero-TC reference diodes manufactured by Microsemi/Microchip. The series provides various temperature coefficients and test currents while maintaining a consistent 6.4 V nominal voltage. These diodes are widely used in high-reliability analog circuits where voltage stability across temperature variations is critical.

Single Zener Diodes Replacement Considerations

Direct replacements include other members of the 1N4565-1N4584A-1 series with matching temperature coefficients. Military equivalents are available with JAN, JANTX, or JANTXV prefixes. Surface mount alternatives exist in the DO-213AA package using the UR-1 suffix.