1N4577A/TR

Single Zener Diodes Overview

The Microchip Technology 1N4577A/TR 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 and a dynamic impedance of 50 Ohms. The device features a maximum reverse current of 2 µA at 3 V, supports an operating temperature range from -65°C to +175°C, and dissipates up to 500 mW. The 'TR' suffix indicates tape and reel packaging.

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

• Instrumentation circuits requiring stable voltage references
• Circuit designs demanding low voltage drift across wide temperature ranges
• Temperature compensated reference systems

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm packaging configuration and tolerance options. Ensure the component meets required environmental qualifications if deployed in harsh conditions. Confirm that the tape and reel format aligns with automated assembly equipment specifications before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a nominal 6.4 V reference with a 0.002%/°C temperature coefficient is required. Consider the 2.0 mA test current and 50 Ohm dynamic impedance for circuit stability. Evaluate the DO-7 package dimensions and lead plating requirements against board layout constraints and soldering process capabilities.

Single Zener Diodes Part Context

This part belongs to the 1N4565 thru 1N4584A-1 series of zero-TC reference diodes. The series provides various temperature coefficients ranging from 0.01%/°C to 0.0005%/°C. Military qualifications are available via JAN, JANTX, or JANTXV prefixes, while radiation-hardened versions use the RH prefix.

Single Zener Diodes Replacement Considerations

Consult the official datasheet for equivalent parts within the 1N4565-1N4584A-1 series. Verify matching temperature coefficients, test currents, and package types for direct substitution.