1N4624DUR-1/TR

Overview

The Microchip Technology 1N4624DUR-1/TR is a 500 mW Zener voltage regulator in the surface mount glass DO-213AA package. It provides a nominal Zener voltage of 4.7 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 characteristics include a maximum dynamic impedance of 1550 Ohms, a test current of 250 µA, and a maximum reverse leakage current of 5.0 µA at 3 V.

Feature Summary

• Hermetically sealed metallurgically bonded glass construction for high reliability
• Qualified per MIL-PRF-19500/435 for JAN, JANTX, JANTXV, and JANS levels
• Inherently radiation hard design suitable for harsh environments
• 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
• Low noise signal conditioning applications

Procurement Notes

Verify the specific reliability level required (JAN, JANTX, JANTXV, or JANS) as prefixes alter screening requirements. Confirm RoHS compliance status, as commercial versions may differ from military qualified parts. Ensure the TR suffix is correctly applied for tape and reel packaging specifications. Cross-reference datasheet T4-LDS-0245 for exact mechanical dimensions and soldering profiles.

Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-reliability applications. The DO-213AA package offers a compact footprint equivalent to the axial 1N4624 series. Consider the low noise density specification for sensitive analog circuits. Verify that the 500 mW power dissipation rating meets the thermal requirements of the target application environment.

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. The series covers voltages from 1.8 V to 100 V with various tolerance options.

Replacement Considerations

The CDLL4624-1 serves as a commercial grade equivalent without military qualification. Axial leaded alternatives include the 1N4624-1 and 1N4624E3. Surface mount variants like the 1PMT4624 are available in tabbed packages.