1N4756 G

Overview

The Microsemi Corporation 1N4756 G is a silicon Zener diode designed for voltage regulation applications. It operates within the JEDEC registered 1N4728AG through 1N4764AG series, providing a nominal Zener voltage of 47 V with a 5% tolerance. The device features a hermetically sealed glass body in a DO-41 (DO-204AL) axial leaded package, supporting a power dissipation of 1 W. It is rated for a maximum operating temperature of 175 °C and a minimum operating temperature of -65 °C.

Feature Summary

• Hermetically sealed glass encapsulation provides environmental protection and reliability beyond standard plastic packages.
• High thermal rating allows operation at elevated temperatures up to 175 °C.
• JEDEC registered part number ensures compatibility with industry-standard designs.

Applications

• Voltage regulation in high-reliability electronic circuits
• Overvoltage protection in harsh environments
• Reference voltage sources requiring stable performance

Procurement Notes

Verify current availability status directly with Microsemi or authorized distributors, as supply conditions may vary. Confirm that the specific suffix 'G' denotes the hermetic glass package variant required for your application's environmental and thermal specifications. Ensure compliance with relevant military or industrial screening standards if applicable to the end-use system.

Selection Notes

Select this component when a hermetically sealed package is mandatory for environmental sealing or high-temperature stability. Compare against the plastic equivalent (1N4756A P suffix) if lower thermal resistance is not critical and cost reduction is prioritized. Verify that the 1 W power rating and 47 V breakdown voltage align with the circuit design requirements.

Part Context

This component belongs to the Microsemi 1N47xxAG series of 1-watt Zener diodes. These devices are widely used in commercial and industrial electronics where robust voltage regulation is needed. The 'G' suffix specifically identifies the glass-body construction, distinguishing it from the plastic-bodied variants within the same electrical specification family.

Replacement Considerations

Direct substitutes include other manufacturers' 1N4756A parts with identical electrical ratings. For hermetic requirements, verify equivalents from vendors offering DO-41 glass Zener diodes with matching voltage and power dissipation. Plastic replacements like 1N4756A P suffix are electrically similar but lack hermetic sealing.