1N4577A-1E3/TR

Single Zener Diodes Overview

The Microchip Technology 1N4577A-1E3/TR is a temperature-compensated Zener reference diode with a nominal voltage of 6.4 V and a maximum voltage temperature coefficient of 0.002 %/°C. It operates at a test current of 2.0 mA, features a maximum reverse current of 2 µA at 3 V, and has a dynamic impedance of 50 Ohms. The device is housed in a DO-204AH (DO-35) axial leaded package, supports an operating temperature range from -65°C to +175°C, and dissipates up to 500 mW.

Single Zener Diodes Feature Summary

• Temperature compensated design for minimal voltage change over broad operating ranges
• Internal metallurgical bond construction for enhanced stability
• Flexible axial-leaded mounting terminals suitable for through-hole applications

Single Zener Diodes Applications

• Instrumentation circuits requiring stable voltage references
• Precision circuit designs sensitive to temperature variations
• General purpose voltage reference applications

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements against the manufacturer's datasheet before ordering. Confirm that the TR suffix corresponds to tape and reel packaging as specified in the documentation. Ensure compatibility with the required JEDEC registration standards and check for any military qualification prefixes if applicable to the intended deployment environment.

Single Zener Diodes Selection Notes

Select this component when a 6.4 V reference with a 0.002 %/°C temperature coefficient is required. The 2.0 mA test current setting distinguishes it from lower or higher current variants within the series. Verify that the DO-204AH package dimensions fit the target PCB layout and that the 500 mW power dissipation rating meets the thermal constraints of the application.

Single Zener Diodes Part Context

This part belongs to the 1N4565 thru 1N4584A-1 series of Zero-TC Reference Diodes originally developed by Microsemi Scottsdale Division. The series provides various temperature coefficients and operating currents for the same 6.4 V nominal voltage. The 1N4577A variant specifically targets the 0.002 %/°C coefficient category.

Single Zener Diodes Replacement Considerations

Compatible substitutes include other parts from the 1N4565-1N4584A-1 series with matching electrical characteristics. Variants such as 1N4577 or 1N4577A may be considered if package and tolerance specifications align. Military qualified versions like JANTX1N4577A-1 are available for specialized environments.