1N4570/TR

Single Zener Diodes Overview

The Microchip Technology 1N4570/TR is a temperature-compensated Zener reference diode with a nominal voltage of 6.4 V and a maximum temperature coefficient of 0.01%/°C. It operates at a test current of 0.5 mA, features a maximum reverse leakage current of 2 µA at 3 V, and has a dynamic impedance of 100 Ohms. The device dissipates 500 mW and functions within an operating temperature range of -65°C to +175°C. It utilizes a DO-7 (DO-204AA) glass axial package and is supplied in tape and reel format.

Single Zener Diodes Feature Summary

• Temperature compensated design for minimal voltage change over broad operating ranges
• Internal metallurgical bonding for structural integrity
• Hermetically sealed glass case construction
• ESD nonsensitive per MIL-STD-750 Method 1020

Single Zener Diodes Applications

• Instrumentation requiring stable voltage references
• Circuit designs demanding low voltage drift with temperature
• Military qualification applications via JAN/JANTX prefixes

Single Zener Diodes Procurement Notes

Verify the specific manufacturer origin, as the 1N4570 series was originally Microsemi and may now be produced by Microchip Technology or other authorized entities. Confirm the TR suffix indicates tape and reel packaging per EIA-296 standards. Ensure the component meets required military qualifications if applicable, as standard versions differ from JAN/JANTX variants.

Single Zener Diodes Selection Notes

Select this component when a 6.4 V reference with a 0.01%/°C temperature coefficient is required. The 0.5 mA test current suits low-power applications. Verify that the DO-7 axial package fits the board layout. Consider tighter tolerance suffixes if voltage accuracy stricter than ±5% is needed.

Single Zener Diodes Part Context

The 1N4570 belongs to the 1N4565 through 1N4584A-1 series of zero-TC reference diodes. These devices provide nominal 6.4 V outputs with various temperature coefficients ranging from 0.01%/°C to 0.0005%/°C. The series supports multiple operating currents including 0.5 mA, 1.0 mA, 2.0 mA, and 4.0 mA.

Single Zener Diodes Replacement Considerations

Equivalent parts include 1N4570A and 1N4570A-1. Military qualified equivalents are available with JAN, JANTX, or JANTXV prefixes.