1N4579A-1

Single Zener Diodes Overview

The Microchip Technology 1N4579A-1 is a temperature-compensated Zener reference diode housed in a DO-35-2 through-hole package. It features a nominal Zener voltage of 6.4 V with a tight tolerance of 1%. The device operates at a test current of 2 mA and dissipates up to 500 mW. Key electrical characteristics include a maximum reverse leakage current of 2 µA, a Zener impedance of 50 Ohms, and an exceptionally low voltage temperature coefficient of 0.0005 %/°C. It supports an operating temperature range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Temperature compensated design for minimal voltage drift across wide thermal ranges
• High precision voltage regulation with tight manufacturing tolerances
• Robust construction with internal metallurgical bond option for enhanced reliability

Single Zener Diodes Applications

• Precision voltage reference circuits requiring high stability
• Military and aerospace electronic systems demanding extreme temperature performance
• Calibration equipment and measurement instrumentation

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration when ordering, as it dictates package type and qualification level. Confirm that the required voltage tolerance and temperature coefficient meet the strictest circuit specifications. Ensure the procurement channel provides traceability documentation suitable for regulated industries. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Single Zener Diodes Selection Notes

Select this component when standard Zener diodes fail to maintain accuracy under significant thermal fluctuations. The 6.4 V nominal voltage is ideal for bandgap-like references without active regulation. Consider the 50 Ohm impedance for noise-sensitive applications. Verify that the 500 mW power rating accommodates the maximum expected current in the design.

Single Zener Diodes Part Context

This part belongs to the 1N4565 through 1N4584 series of Zero-TC Reference Diodes. These devices are engineered to provide stable voltage references in harsh environments. The series offers various operating currents and tolerance levels, with the 1N4579A-1 representing a high-precision variant optimized for critical analog signal processing tasks.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same family include other 1N45xxA-1 variants with different voltage ratings but identical package and compensation characteristics. Military equivalents such as JANTX1N4579A-1 offer similar performance with additional qualification standards.