1N4624E3

Overview

The Microchip Technology 1N4624E3 is a single Zener diode rated at 4.7 V nominal voltage with ±5% tolerance. It features a maximum power dissipation of 500 mW and operates within a temperature range of -65 °C to +175 °C. The device utilizes a DO-204AH (DO-35) axial through-hole package. Key electrical characteristics include a maximum reverse leakage current of 5 µA at 3 V and a Zener impedance of 1550 Ω.

Feature Summary

• Hermetically sealed glass construction for environmental protection
• Extended high-temperature operation capability up to 175 °C
• Low noise performance suitable for sensitive signal regulation

Applications

• Voltage reference circuits in aerospace systems
• Overvoltage protection in military-grade electronics
• Precision voltage regulation in harsh environments

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm compliance levels, as variants exist with different qualification standards. Ensure the ordering part number matches the required reliability tier for your application. Cross-reference datasheets for exact mechanical dimensions and testing conditions before finalizing procurement specifications.

Selection Notes

Select this component when a hermetically sealed, low-noise Zener diode is required for high-reliability applications. The 4.7 V rating and 500 mW power dissipation define its operating limits. Consider the DO-204AH package for through-hole mounting constraints. Verify that the extended temperature range meets the operational environment requirements.

Part Context

This component belongs to the 1N4624 series of low-noise Zener diodes manufactured by Microchip Technology. It is designed for high-reliability applications requiring stable voltage regulation. The E3 suffix indicates lead-free composition compliant with specific environmental directives. The series is widely used in defense and aerospace sectors due to its robust construction.

Replacement Considerations

Consult official substitution lists for equivalent parts with matching voltage, power, and package specifications. Verify compatibility with existing circuit parameters before replacing.