1N4624

Overview

The Microchip Technology 1N4624 is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 4.7 V with a tolerance of ±5%. The device supports a maximum power dissipation of 500 mW and operates within an extended temperature range from -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 5 µA at 3 V, a Zener impedance of 1550 Ohms, and a forward voltage of 1.1 V at 200 mA. It is housed in the DO-7 (DO-204AA) axial through-hole package.

Feature Summary

• Provides stable voltage regulation with a nominal 4.7 V output.
• Capable of operating reliably in extreme environments up to 175°C.
• Features low reverse leakage current for efficient standby performance.
• Constructed in a durable axial leaded package for through-hole mounting.

Applications

• Precision voltage reference circuits
• Overvoltage protection stages
• General-purpose voltage regulation

Procurement Notes

Verify compliance status prior to procurement, as this specific part number may not adhere to RoHS directives depending on the manufacturing batch. Confirm the exact package variant and suffix codes with the manufacturer or authorized distributors to ensure compatibility with existing assembly processes and environmental regulations.

Selection Notes

Select this component when a robust 4.7 V reference is required in high-temperature environments. Ensure the circuit design accommodates the specified 500 mW power dissipation limit. Verify that the DO-7 package dimensions align with the target PCB layout constraints before finalizing the design.

Part Context

This component belongs to the standard 1N4624 series of Zener diodes manufactured by Microchip Technology. It serves as a fundamental discrete semiconductor device for analog signal conditioning and power management tasks requiring precise voltage clamping or referencing in industrial and military-grade electronics.

Replacement Considerations

Cross-reference with other manufacturers offering equivalent 4.7 V, 500 mW Zener diodes in the DO-7 package. Verify that substitute parts match the critical parameters of 5% voltage tolerance and 1550 Ohm impedance to maintain circuit integrity.