1N4619UR/TR

Single Zener Diodes Overview

The Microchip Technology 1N4619UR/TR is a glass surface mount Zener voltage regulator in the DO-213AA (SOD80/MLL34) MELF package. It provides a nominal Zener voltage of 3.0 V at a test current of 250 µA with a standard tolerance of ±5%. The device features a maximum Zener impedance of 1600 Ω and a maximum reverse leakage current of 1.0 µA. It operates within a temperature range of -65°C to +175°C, dissipates up to 0.5 W, and includes a tape-and-reel option for automated assembly.

Single Zener Diodes Feature Summary

• Hermetically sealed glass MELF package
• Inherently radiation hard design
• ESD insensitive per MIL-STD-750 Method 1020
• Minimal capacitance characteristics

Single Zener Diodes Applications

• Voltage regulation in harsh environments
• Reference voltage sources
• Protection circuits requiring radiation hardness

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type and termination finish. Confirm RoHS compliance status if required by the application. Ensure the procurement channel is authorized to guarantee component authenticity and traceability. Check for availability of the tape-and-reel packaging format versus bulk options.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high reliability applications. Consider the 3.0 V nominal voltage and 1600 Ω impedance for circuit design. Evaluate the thermal resistance and power derating curves for proper heat dissipation on the PCB. Verify that the operating temperature range meets the environmental requirements.

Single Zener Diodes Part Context

This part belongs to the 1N4614UR through 1N4627UR series of 0.5 Watt glass surface mount Zeners. These devices serve as surface mount equivalents to JEDEC registered axial-leaded parts. The series offers voltages from 1.8 to 100 V with standard 5% tolerances. Military qualified versions are available with internal metallurgical bonds.

Single Zener Diodes Replacement Considerations

Equivalent axial-leaded parts include the 1N4619. Surface mount alternatives in the same series are 1N4618UR and 1N4620UR. Verify pinout compatibility and thermal performance when substituting.

Single Zener Diodes FAQ

What is the maximum reverse leakage current for the 1N4619UR?

The maximum reverse leakage current is 1.0 µA.

Is the 1N4619UR radiation hard?

Yes, the device is inherently radiation hard as described in Microsemi MicroNote 050.