1N4625UR-1

Single Zener Diodes Overview

The Microchip Technology 1N4625UR-1 is a 500 mW metallurgically bonded glass surface mount Zener diode. It provides a nominal Zener voltage of 5.1 V with a standard tolerance of ±5%. The device operates within a junction and storage temperature range of -65 °C to +175 °C. Key electrical parameters include a maximum reverse current of 5 µA at 3 V, a maximum Zener impedance of 1500 Ohms, and a maximum noise density of 3 µV/√Hz. It is qualified per MIL-PRF-19500/435 for high reliability applications.

Single Zener Diodes Feature Summary

• Hermetically sealed glass DO-213AA (MELF) package with internal metallurgical bond
• Qualified per MIL-PRF-19500/435 for JAN, JANTX, JANTXV, and JANS levels
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020
• Inherently radiation hard

Single Zener Diodes Applications

• Voltage regulation over broad ranges of current and temperature
• High reliability aerospace and defense circuits
• Radiation-hardened electronic systems

Single Zener Diodes Procurement Notes

Verify the specific reliability level required (JAN, JANTX, JANTXV, or JANS) as prefixes must be added to the base part number. Confirm RoHS compliance status, as it applies only to commercial grade versions. Ensure the ordering suffix matches the desired packaging option, such as tape and reel configurations if applicable.

Single Zener Diodes Selection Notes

Select this component for surface mount designs requiring hermetic sealing and high thermal stability. The DO-213AA package offers a compact footprint suitable for dense PCB layouts. Consider the low capacitance characteristics for signal integrity in sensitive applications. Verify that the 500 mW power dissipation rating meets the thermal requirements of the target environment.

Single Zener Diodes Part Context

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

Single Zener Diodes Replacement Considerations

Commercial equivalents are available under the CDLL4625-1 designation. For axial leaded replacements, consider the 1N4625-1 variant. Direct substitution requires verifying package compatibility and ensuring the replacement meets the necessary MIL-PRF-19500/435 qualification levels.