1N4679 (DO35)

Overview

The Microsemi 1N4679 is a silicon unidirectional voltage regulator diode housed in the DO-35 (DO-204AH) glass package. It features hermetic sealing and double slug construction for high reliability. The device provides a nominal Zener voltage of 2V with a maximum power dissipation of 0.5W. It operates within a temperature range of -65°C to 200°C.

Feature Summary

• Hermetically sealed glass axial-leaded construction
• Double slug type metallurgically bonded design
• High thermal stability up to 200°C junction temperature

Applications

• Precision voltage regulation circuits
• Temperature compensated reference applications
• High-reliability aerospace systems

Procurement Notes

Verify the specific suffix against official datasheets, as variations exist between commercial and military grades. Confirm lead finish and RoHS compliance status directly with the manufacturer or authorized distributor documentation before procurement.

Selection Notes

Select this component when a low-voltage 2V reference is required in a standard axial-glass package. Ensure the circuit design accommodates the 0.5W power rating and verify that the operating environment falls within the specified -65°C to 200°C temperature limits.

Part Context

This part belongs to the 1N4678 series of 500mW DO-35 glass Zener diodes. The series covers a wide voltage range from 1.8V to 200V. The 1N4679 specifically addresses the lower end of this spectrum, providing stable regulation at 2V.

Replacement Considerations

Equivalent parts include the Motorola/NXP 1N4679RL and MCC 1N4679D-BP. Verify package compatibility and tolerance specifications when substituting.