1N4734AUR

Overview

The 1N4734AUR is a Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 5.6V with a tolerance of 5% and a power dissipation rating of 1W. The device utilizes silicon as the semiconductor material and is housed in a DO-213AB package, also known as MELF-2. This component is characterized by its hermetic sealing and glass encapsulation, ensuring high reliability and isolation. It operates unidirectionally with two terminals and is classified under JEDEC-95 code DO-213AB.

Feature Summary

• Hermetically sealed glass encapsulation for enhanced environmental protection
• High reliability construction suitable for demanding applications
• Isolated case connection for safe mounting

Applications

• Voltage regulation circuits
• High-reliability electronic systems
• Industrial control equipment

Procurement Notes

Verify the specific manufacturer designation, as this part number may be associated with Microsemi or Microchip Technology depending on corporate history. Confirm the package type is DO-213AB (MELF) and that the device is hermetically sealed. Check RoHS compliance status, as some variants may not meet current standards. Ensure the supplier provides valid traceability documentation for high-reliability requirements.

Selection Notes

Select this component when a 5.6V Zener reference is required in a hermetic, surface-mount compatible MELF package. Consider the 1W power rating and 5% voltage tolerance for circuit design. Verify thermal management needs for the isolated glass package. Compare against standard plastic packages if hermetic sealing is not strictly necessary for the application environment.

Part Context

This part belongs to the 1N4734 series of Zener diodes, widely used for voltage reference and regulation. The 'A' suffix typically denotes a 5% tolerance version. The 'UR' suffix often indicates tape and reel packaging. The DO-213AB package offers a compact form factor with robust mechanical and thermal properties compared to axial leads.

Replacement Considerations

Direct substitutes include MQ1N4734DPTR and MSP1N4734AURTR from Microsemi, which share identical electrical specifications and package dimensions. Ensure any replacement maintains the hermetic seal and glass construction if environmental resistance is critical.