1N4574A-1E3

Single Zener Diodes Overview

The Microchip Technology 1N4574A-1E3 is a 6.4 V temperature compensated Zener reference diode in a DO-7 (DO-204AA) glass axial-leaded package. It features an internal metallurgical bond and operates at a test current of 1.0 mA with a maximum voltage temperature coefficient of 0.0005%/°C. The device provides minimal voltage change over a broad operating temperature range, supporting DC power dissipation up to 500 mW.

Single Zener Diodes Feature Summary

• Internal metallurgical bonded construction for enhanced stability
• Temperature compensated design providing minimal voltage change across wide temperature ranges
• Hermetically sealed glass case ensuring environmental protection

Single Zener Diodes Applications

• Instrumentation requiring stable voltage references
• Precision circuit designs demanding low temperature drift
• Military applications qualifying under MIL-PRF-19500/452 standards

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements against official datasheets before ordering. Confirm that the -1 suffix denotes the internal metallurgical bond and check if additional prefixes are required for military qualification levels such as JAN or JANTXV. Ensure the E3 designation aligns with lead-free specifications.

Single Zener Diodes Selection Notes

Select this component when a nominal 6.4 V reference with ultra-low temperature coefficients is required. The 1N4574A variant specifically targets applications needing a maximum coefficient of 0.0005%/°C at a 1.0 mA test current. Consider the DO-7 package dimensions and through-hole mounting constraints during PCB layout.

Single Zener Diodes Part Context

This part belongs to the 1N4565 thru 1N4584A-1 series of Zero-TC Reference Diodes manufactured by Microsemi (now Microchip). The series offers various operating currents and temperature coefficients to suit different precision requirements. The -1 suffix indicates the internal metallurgical bond option available within this family.

Single Zener Diodes Replacement Considerations

Direct substitutes include other parts from the 1N4565-1N4584A-1 series with matching temperature coefficients and test currents. Military equivalents may require JAN, JANTX, or JANTXV prefixes. Surface mount alternatives exist in the DO-213AA package with UR-1 suffixes.