1N4621UR-1

Single Zener Diodes Overview

The Microchip Technology 1N4621UR-1 is a surface mount Zener diode housed in the DO-213AA (MELF) glass package. It provides a nominal Zener voltage of 3.6 V with a power dissipation rating of 0.5 W. The device features a unidirectional configuration and is available in a 5% tolerance variant. It is constructed using silicon technology and supports an operating temperature range from -65 °C to +175 °C junction temperature.

Single Zener Diodes Feature Summary

• Metallurgically bonded internal construction for enhanced reliability
• Hermetically sealed glass encapsulation
• Qualified for high-reliability military applications

Single Zener Diodes Applications

• High-reliability voltage regulation circuits
• Military aerospace electronic systems
• Surface mount protection applications requiring hermetic sealing

Single Zener Diodes Procurement Notes

Verify the specific qualification level, such as JANTXV or JANS, required for your application, as these suffixes denote different reliability standards within the same electrical specification. Confirm that the DO-213AA package orientation matches your PCB footprint design. Ensure the supplier provides traceability documentation consistent with military procurement requirements.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for harsh environments. The 3.6 V rating suits low-voltage reference needs. Consider the 5% tolerance if tighter precision is not critical. Verify thermal management capabilities given the 0.5 W dissipation limit in the small MELF package.

Single Zener Diodes Part Context

This part belongs to the 1N46xx series of 500 mW Zener diodes manufactured by Microchip Technology. These devices are designed for surface mount assembly and offer a compact alternative to traditional axial leaded packages while maintaining high reliability standards suitable for defense and space electronics.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N4621DUR-1E3 and 1N4621UR-1E3. Verify that substitute components maintain the same DO-213AA package dimensions and hermetic sealing characteristics to ensure mechanical compatibility.