1N4566E3

Single Zener Diodes Overview

The Microchip Technology 1N4566E3 is a temperature-compensated Zener reference diode with a nominal voltage of 6.4 V and a maximum temperature coefficient of 0.005%/°C. It operates at a test current of 0.5 mA, providing minimal voltage change over a broad operating temperature range. The device features a hermetically sealed glass DO-7 (DO-204AA) package with internal metallurgical bonding. Electrical characteristics include a maximum reverse current of 2.0 µA at 3 V and a dynamic impedance of 200 Ω at the specified test current.

Single Zener Diodes Feature Summary

• Temperature compensated design for stable reference voltage
• Hermetically sealed glass axial-leaded construction
• Internal metallurgical bonding for reliability

Single Zener Diodes Applications

• Precision instrumentation requiring low drift
• Voltage reference circuits in measurement systems
• Applications demanding minimal voltage change over temperature

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source, as the 1N4566 series originates from Microsemi/Microchip. Confirm that the E3 suffix denotes lead-free compliance if required by your assembly process. Ensure the DO-7 package form factor matches your PCB layout constraints before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a 6.4 V reference with tight temperature stability is needed. Compare the 0.005%/°C coefficient against other series members like the 1N4565 or 1N4567 to match specific drift requirements. Verify that the 0.5 mA test current aligns with your circuit's power budget and biasing capabilities.

Single Zener Diodes Part Context

This part belongs to the 1N4565 through 1N4584A-1 series of Zero-TC Reference Diodes. These devices are JEDEC registered and offer various temperature coefficients and test currents ranging from 0.5 mA to 4.0 mA. Military qualifications are available via JAN/JANTX prefixes, and radiation-hardened versions exist under the RH prefix.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same family include the 1N4565, 1N4567, 1N4568, and 1N4569, which share the 6.4 V nominal voltage but differ in temperature coefficients and test currents. Ensure the replacement matches the required temperature stability and operating current specifications.