1N4759AUR/TR

Overview

The 1N4759AUR/TR is a surface-mount Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 62 V with a tolerance of ±5%. The device is housed in a DO-213AB (MELF) glass package and supports a maximum power dissipation of 1 W. It operates within an extended temperature range from -65 °C to +175 °C. Key electrical characteristics include a maximum reverse leakage current of 5 µA and a Zener impedance of 125 Ohms at the test current of 4 mA.

Feature Summary

• Provides stable voltage regulation using a single Zener junction structure.
• Utilizes a MELF glass package suitable for automated surface-mount assembly processes.
• Engineered for high-temperature reliability with operation up to 175 °C.

Applications

• Voltage reference circuits requiring precise potential levels.
• Overvoltage protection stages in electronic systems.
• Clamping applications in signal conditioning paths.

Procurement Notes

Verify component authenticity through authorized Microchip distributors or certified supply chain partners. Confirm that the specific ordering suffix matches the required reel packaging configuration. Ensure compliance with RoHS directives if applicable to your manufacturing standards. Request official datasheets and material declarations prior to finalizing procurement orders to guarantee technical suitability.

Selection Notes

Select this component when a 62 V regulation point is required in a compact surface-mount form factor. The DO-213AB package offers space efficiency compared to axial leads. Consider the 1 W power rating and thermal management requirements for the intended circuit environment. Verify that the ±5% tolerance aligns with the system's voltage accuracy specifications.

Part Context

This part belongs to the 1N47xx series of Zener diodes, adapted for surface-mount technology. The 'AUR' designation typically indicates the specific package style and tape-and-reel packaging format. Microchip Technology continues the legacy of robust discrete semiconductor components originally established by predecessor manufacturers like National Semiconductor.

Replacement Considerations

The 1N4759A is a through-hole equivalent with identical electrical parameters but different mounting requirements. Direct pin-to-pin replacement is not possible due to package differences; PCB redesign may be necessary. Other surface-mount Zener diodes with matching 62 V ratings and DO-213AB packages should be evaluated for functional compatibility.