1N4623/TR

Overview

The Microchip Technology 1N4623/TR is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 4.3 V with a tolerance of ±5%. The device has a maximum power dissipation of 500 mW and operates in the DO-204AH (DO-35) axial through-hole package. Key electrical parameters include a maximum Zener impedance of 1600 Ohms, a reverse leakage current of 2 µA at 2 V, and a forward voltage of 1.1 V at 200 mA. It supports a junction temperature range from -65°C to +175°C.

Feature Summary

• Provides stable voltage regulation with a nominal 4.3 V output.
• Capable of handling up to 500 mW of power dissipation.
• Operates reliably across an extended temperature range up to 175°C.

Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Procurement Notes

Verify the specific suffix against official documentation to confirm tape-and-reel packaging and RoHS compliance status. Confirm that the part number matches the exact manufacturer designation for the intended production run. Ensure compatibility with existing assembly processes before procurement.

Selection Notes

Select this component when a precise 4.3 V regulation point is required in a through-hole design. Consider the 1600 Ohm impedance limit for low-current stability requirements. Verify that the 500 mW power rating meets the thermal constraints of the target application environment.

Part Context

This component belongs to the standard Zener diode family produced by Microchip Technology. It utilizes the DO-204AH axial leaded package, suitable for general-purpose discrete semiconductor applications requiring reliable voltage control in electronic circuits.

Replacement Considerations

Direct substitutes include the 1N4623-1E3 variant from Microchip Technology. Other compatible options may include parts from Central Semiconductor or onsemi with matching 4.3 V specifications and similar power ratings.