1N4622UR

Single Zener Diodes Overview

The Microchip Technology 1N4622UR is a glass surface mount Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 3.9 V with a maximum dynamic impedance of 1650 Ohms. The device operates at a test current of 0.25 mA and supports a maximum power dissipation of 0.5 W. It utilizes the DO-213AA (SMB) package style and is rated for junction temperatures up to 175 °C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass construction for environmental stability
• Surface mount design compatible with automated assembly processes
• Low noise operation optimized for precision voltage reference circuits

Single Zener Diodes Applications

• Precision voltage regulation in compact electronic assemblies
• Voltage reference sources for analog signal processing
• Overvoltage protection in low-power surface mount circuits

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements against the official datasheet to ensure correct tolerance and packaging specifications. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary by region. Ensure proper handling procedures are followed during storage and installation to maintain component integrity.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for space-constrained designs. The 3.9 V rating suits specific reference needs, while the 0.5 W power rating defines thermal limits. Evaluate the 1650 Ohm dynamic impedance against circuit sensitivity requirements to ensure adequate regulation performance under varying load conditions.

Single Zener Diodes Part Context

This part belongs to the 1N46xx series of 0.5 Watt glass surface mount Zener diodes manufactured by Microchip Technology. The series provides a wide selection of voltages from 1.8 to 100 Volts in standard 5% tolerances. These devices utilize the DO-213AA package, offering a robust alternative to through-hole equivalents for modern PCB layouts.

Single Zener Diodes Replacement Considerations

Direct substitutes include other manufacturers' DO-213AA packaged Zener diodes with matching 3.9 V ratings and 0.5 W power dissipation. Verify that replacement parts meet the same hermetic sealing standards and dynamic impedance specifications to ensure circuit compatibility.