1N4683 (DO35)

Overview

The Microsemi 1N4683 is a silicon unidirectional Zener voltage regulator diode with a nominal breakdown voltage of 3V. It operates within the 1N4678 series, offering a power dissipation rating of 0.5W in a DO-35 (DO-204AH) hermetically sealed glass axial-lead package. The device features metallurgically bonded construction and supports screening to MIL-PRF-19500 standards for high-reliability applications.

Feature Summary

• Hermetically sealed glass axial-lead construction
• Internal metallurgical bond option available
• Silicon-oxide passivated junction technology

Applications

• Voltage regulation in broad operating current ranges
• Temperature-compensated reference circuits
• High-reliability aerospace and defense systems

Procurement Notes

Verify the specific suffix against the datasheet to confirm the exact tolerance, screening level, and package variant. Ensure the ordering code matches the required MIL-PRF-19500 qualification if applicable. Confirm RoHS compliance status as it varies by commercial or military grade designation.

Selection Notes

Select this component for low-voltage regulation requiring high reliability. The DO-35 package suits through-hole designs needing hermetic sealing. Consider tighter tolerance variants if standard 5% accuracy is insufficient for the circuit requirements.

Part Context

Part of the 1N4678 series of 0.5W Zener diodes. This series provides voltages from 1.8V to 43V. The 1N4683 specifically addresses the 3V requirement within this lineup, sharing common packaging and manufacturing processes with adjacent part numbers.

Replacement Considerations

Equivalent parts include other manufacturers' 1N4683 devices in DO-35 packages. Surface mount equivalents exist in the DO-213AA (MELF) format.