1N4626-1/TR

Overview

The Microchip Technology 1N4626-1/TR is a 500 mW metallurgically bonded glass Zener diode in the axial-lead DO-35 package. It provides a nominal Zener voltage of 5.6 V at a test current of 250 µA with a standard tolerance of ±5%. The device features a maximum dynamic impedance of 1400 Ohms and a maximum reverse leakage current of 5 µA. Qualified per MIL-PRF-19500/435, it operates within a junction temperature range of -65 °C to +175 °C.

Feature Summary

• Hermetically sealed construction using an internal metallurgical bond for high reliability.
• Qualified to JAN, JANTX, JANTXV, and JANS levels under MIL-PRF-19500/435 standards.
• 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 electronic circuits.
• Reference voltage sources requiring low noise characteristics.

Procurement Notes

Verify that the ordering suffix 'TR' corresponds to the Tape & Reel packaging option per EIA-296 standards. Confirm the specific reliability level (JAN, JANTX, JANTXV, or JANS) required for the application, as these designations dictate qualification standards. Ensure the component meets the necessary environmental and radiation hardness requirements for the intended deployment environment.

Selection Notes

Select this component when a hermetically sealed, axial-lead Zener diode with a 5.6 V breakdown is required. The 1N4626-1 offers a standard 5% voltage tolerance suitable for general regulation tasks. Consider the JANTXV or JANS variants if higher reliability screening or radiation hardness is mandated by the system specifications.

Part Context

This part belongs to the 1N4614-1 through 1N4627-1 series of 500 mZener diodes. These devices are JEDEC registered and available in various packages including DO-35, DO-213AA, and DO-216. The series covers voltages from 1.8 V to 100 V with tolerances of 5%, 2%, and 1%.

Replacement Considerations

Compatible replacements include other manufacturers' 1N4626 series diodes meeting the same electrical specifications. For space-level applications, verify that alternative parts meet the same MIL-PRF-19500/435 qualification levels and radiation hardness criteria.