1N4577A

Single Zener Diodes Overview

The Microchip Technology 1N4577A 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 2.0 mA with a maximum voltage temperature coefficient of 0.002%/°C. The device features internal metallurgical bonding and supports an operating temperature range from -55°C to +100°C. Key electrical parameters include a maximum reverse current of 2 µA at 3 V and a dynamic impedance of 50 Ohms at the specified test current.

Single Zener Diodes Feature Summary

• Provides minimal voltage change over a broad operating temperature range for instrumentation and other circuit designs requiring a voltage reference
• Temperature coefficient selections available from 0.01%/ºC to 0.0005%/ºC
• Tight reference voltage tolerances available with nominal value of 6.4 V by adding tolerance 1%, 2%, 3%, etc. after the part number for identification, e.g. 1N4569-2%, 1N4579A-1%, 1N4574A-1-1%, etc.

Single Zener Diodes Applications

• Instrumentation circuits requiring stable voltage references
• Circuit designs demanding minimal voltage change over temperature
• Temperature compensated reference applications

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements for military qualifications or tape and reel packaging when ordering. Confirm that the selected variant matches the required temperature coefficient and tolerance specifications for your application. Ensure compatibility with the DO-7 package dimensions and lead plating standards specified in the datasheet.

Single Zener Diodes Selection Notes

Select the 1N4577A when a 6.4 V reference with a 0.002%/°C temperature coefficient is required. Consider the 2.0 mA test current for optimal stability within the specified power dissipation limits. Evaluate tighter tolerance options if higher precision is needed by appending the appropriate percentage suffix to the base part number.

Single Zener Diodes Part Context

The 1N4577A belongs to the JEDEC registered 1N4565 through 1N4584 series of zero-TC reference diodes. This family offers various temperature coefficients and operating currents to suit different design needs. The series is internally metallurgical bonded and available in hermetically sealed glass cases suitable for harsh environments.

Single Zener Diodes Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.

Single Zener Diodes FAQ

What is the maximum voltage temperature coefficient for the 1N4577A?

The maximum voltage temperature coefficient for the 1N4577A is 0.002%/°C.

What is the recommended operating test current for the 1N4577A?

The recommended Zener test current (IZT) for the 1N4577A is 2.0 mA.