1N4627UR-1/TR

Overview

The Microchip Technology 1N4627UR-1/TR is a 500 mW metallurgically bonded glass surface mount Zener diode in the DO-213AA package. It provides a nominal Zener voltage of 6.2 V with a standard tolerance of ±5%. The device operates within a junction temperature range of -65 °C to +175 °C and features a maximum reverse current of 5 µA at 6.2 V. It exhibits a dynamic impedance of 1200 Ohms and a noise density of 40 µV/√Hz.

Feature Summary

• Hermetically sealed glass DO-213AA MELF style surface mount package
• Internal metallurgical bond construction for high reliability
• Qualified per MIL-PRF-19500/435 up to JANS level
• Inherently radiation hard

Applications

• Voltage regulation over broad ranges of current and temperature
• High reliability applications requiring MIL-qualified components
• Radiation-hardened circuit designs

Procurement Notes

Verify that the ordering suffix TR corresponds to tape and reel packaging as specified in the mechanical data. Confirm the specific reliability level (JAN, JANTX, JANTXV, or JANS) required for the application, as the base part number indicates the series but prefixes define the screening grade. Ensure compatibility with the DO-213AA footprint on the printed circuit board.

Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-reliability environments. The internal metallurgical bond and radiation hardness make it suitable for aerospace and defense applications. Verify that the 6.2 V nominal voltage and 500 mW power dissipation meet the circuit requirements.

Part Context

This device belongs to the 1N4614UR-1 through 1N4627UR-1 series of 500 mZener voltage regulators. These are surface mount equivalents to the JEDEC registered axial-leaded 1N4614 through 1N4627 series. The series offers voltages from 1.8 to 100 V with various tolerance options.

Replacement Considerations

The CDLL4627-1 prefix serves as a commercial equivalent designation for this series. For axial-leaded replacements, the 1N4627-1 series in the DO-35 package is available.