1N4625UR-1/TR

Overview

The Microchip Technology 1N4625UR-1/TR is a surface mount Zener diode in the DO-213AA glass package. It provides a nominal voltage of 5.1 V with a standard tolerance of ±5%. The device features an internal metallurgical bond and operates within a temperature range of -65 °C to +175 °C. Key electrical parameters include a maximum dynamic impedance of 1500 Ohms, a reverse current of 5 µA at 3 V, and a rated power dissipation of 0.5 W.

Feature Summary

• Hermetically sealed glass DO-213AA MELF package with internal metallurgical bond
• Qualified for high reliability applications up to JANS level per MIL-PRF-19500/435
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020
• Inherently radiation hard

Applications

• Voltage regulation over broad ranges of current and temperature
• High reliability electronic systems requiring hermetic sealing
• Radiation-hardened circuit designs

Procurement Notes

Verify that the ordering suffix TR indicates tape and reel packaging as specified in the datasheet. Confirm the required qualification level (JAN, JANTX, JANTXV, or JANS) matches the application needs, as these prefixes must be added to the base part number. Ensure the component meets the specific environmental screening requirements defined by the relevant military specification.

Selection Notes

Select this component when a surface mount equivalent to the axial-leaded 1N4625 is required. The DO-213AA package offers a compact form factor suitable for automated assembly. Consider the 5% voltage tolerance and the specific noise density characteristics if low-noise performance is critical for the design.

Part Context

This device belongs to the 1N4614UR-1 through 1N4627UR-1 series of 500 mW Zener voltage regulators. These components are designed as surface mount equivalents to the JEDEC registered 1N4099 through 1N4135 and 1N4614 through 1N4627 series. The series is available in various voltage tolerances and qualification levels to support diverse industrial and military applications.

Replacement Considerations

Direct replacements include JAN1N4625UR-1, JANTX1N4625UR-1, and JANTXV1N4625UR-1. Commercial versions may use the CDLL4625-1 prefix. Verify that any substitute maintains the same DO-213AA package and metallurgical bond construction.