1N4622UR/TR

Single Zener Diodes Overview

The Microchip Technology 1N4622UR/TR is a glass surface mount Zener voltage regulator belonging to the 1N4614UR through 1N4627UR series. It provides a nominal Zener voltage of 3.9 V with a standard tolerance of ±5%. The device operates at a test current of 250 µA and features a maximum Zener impedance of 2.5 Ohms. Packaged in a hermetically sealed DO-213AA (SOD80) MELF style case, it supports steady-state power dissipation of 0.5 watts. The component is available in tape and reel packaging.

Single Zener Diodes Feature Summary

• Hermetically sealed glass surface mount package
• Regulates voltage over a broad operating current and temperature range
• Minimal capacitance characteristics
• Inherently radiation hard

Single Zener Diodes Applications

• Voltage regulation in surface mount circuits
• Reference voltage generation
• Protection against voltage transients

Single Zener Diodes Procurement Notes

Verify the specific ordering suffixes for tolerance variations and environmental compliance. Confirm that the TR suffix indicates tape and reel packaging as specified. Ensure the procurement matches the exact part number including the e3 designation if RoHS compliance is required. Cross-reference the manufacturer's latest documentation for any updates to mechanical or electrical specifications before finalizing orders.

Single Zener Diodes Selection Notes

Select this component when a low-profile surface mount Zener diode is required for voltage regulation applications. The DO-213AA package offers a direct surface mount equivalent to traditional axial-leaded packages. Consider the thermal resistance and derating curves for high-temperature environments. Verify that the 3.9 V nominal voltage aligns with the circuit requirements and that the ±5% tolerance meets the design specifications.

Single Zener Diodes Part Context

This component is part of the Microsemi Scottsdale Division 1N4614UR through 1N4627UR series of 0.5 watt glass surface mount Zener diodes. These devices are designed to provide a selection of voltages from 1.8 to 100 volts. The series includes options for tighter tolerances and military qualifications via specific suffixes. The 1N4622UR represents the 3.9 V variant within this extensive lineup.

Single Zener Diodes Replacement Considerations

Direct surface mount equivalents include the MLL4622 part number. Axial-leaded replacements such as the 1N4622 are available per JEDEC registration but require different mounting considerations. Verify pinout compatibility and thermal performance when substituting with components from other manufacturers.