1N4625DUR-1/TR

Overview

The Microchip Technology 1N4625DUR-1/TR is a 500 mW Zener voltage regulator in the surface mount, glass DO-213AA package. It features an internal metallurgical bond and is qualified per MIL-PRF-19500/435 up to JANS level for high reliability applications. The nominal Zener voltage is 5.1 V at a test current of 250 µA, with a maximum dynamic impedance of 1500 Ohms and a maximum reverse leakage current of 5 µA at 3 V. The device operates within a junction temperature range of -65 °C to +175 °C.

Feature Summary

• Hermetically sealed surface mount construction using a metallurgically bonded glass DO-213AA package.
• Qualified to JAN, JANTX, JANTXV, and JANS levels per MIL-PRF-19500/435 for high reliability.
• Inherently radiation hard as described in Microsemi MicroNote 050.
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 method 1020.

Applications

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

Procurement Notes

Verify that the ordering suffix TR indicates tape and reel packaging per EIA-481-1-A standard. Confirm the specific reliability level (JAN, JANTX, JANTXV, or JANS) required for the application, as qualification levels vary. Ensure compatibility with the specified DO-213AA footprint and soldering profiles defined in the datasheet.

Selection Notes

Select this component when a hermetically sealed surface mount Zener diode with high reliability qualifications is required. The 5.1 V nominal voltage and 500 mW power dissipation suit moderate current regulation needs. Consider the low noise density characteristics for sensitive analog applications where signal integrity is critical.

Part Context

This part belongs to the 1N4614UR-1 through 1N4627UR-1 series of 500 mZener diodes. These devices serve as surface mount equivalents to the JEDEC registered 1N4099 through 1N4135 and 1N4614 through 1N4627 axial-leaded series. They are designed to provide robust voltage regulation in compact form factors suitable for modern PCB layouts.

Replacement Considerations

Commercial versions are available with the CDLL prefix (e.g., CDLL4625-1). Axial-leaded equivalents exist in the 1N4625-1 series. Surface mount alternatives include the 1PMT4625 series in the DO-216 package. Verify electrical parameters and qualification levels match before substitution.

FAQ

What does the 'TR' suffix indicate for this part number?

The 'TR' suffix indicates that the device is supplied in tape and reel packaging, conforming to the EIA-481-1-A standard with 12 mm tape.

Is the 1N4625DUR-1 radiation hard?

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