1N4752AUR

Overview

The Microchip Technology 1N4752AUR is a high-reliability Zener diode designed for surface-mount applications. It features a nominal Zener voltage of 33V with a tolerance of ±5% and a maximum power dissipation of 1W. The device utilizes a DO-213AB (MELF) glass package, ensuring hermetic sealing for robust performance in demanding environments. It operates within an extended temperature range from -65°C to +175°C, making it suitable for military and aerospace standards. The component is unidirectional and constructed using silicon technology.

Feature Summary

• Hermetically sealed glass MELF construction for enhanced environmental protection
• Extended operating temperature range supporting extreme thermal conditions
• High reliability design compliant with rigorous military specifications

Applications

• Military avionics systems requiring radiation-hardened or high-reliability components
• Aerospace voltage regulation circuits
• Harsh environment industrial control systems

Procurement Notes

Verify the specific suffix 'AUR' against the manufacturer's current datasheet to confirm RoHS compliance status, as historical data indicates potential variations between leaded and lead-free versions for this series. Ensure the procurement source provides traceability documentation required for high-reliability applications. Confirm that the DO-213AB package dimensions match the target PCB footprint exactly before finalizing orders.

Selection Notes

Select this component when a hermetically sealed surface-mount Zener diode is required for high-temperature stability. The 1N4752AUR is appropriate for designs needing precise 33V regulation with tight tolerance in space-constrained boards. Consider the MELF package's soldering profile requirements during thermal analysis. Compare against through-hole equivalents if board layout allows for larger footprints.

Part Context

This part belongs to the 1N47xxAUR series of high-reliability Zener diodes manufactured by Microchip Technology. These devices are engineered to meet stringent quality standards for defense and aerospace sectors. The 'AUR' designation typically indicates a specific tape-and-reel packaging format optimized for automated assembly processes while maintaining the hermetic integrity of the glass envelope.

Replacement Considerations

The 1N4752AUR/TR is listed as a parameter-equivalent substitute by distributors. Verify electrical characteristics and package compatibility before substitution.