1N4755AUR

Overview

The Microchip Technology 1N4755AUR is a surface-mount Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 43 V with a tolerance of ±5%. The device has a power dissipation rating of 1 W and operates within a temperature range of -65°C to +175°C. Packaged in the DO-213AB (MELF) format, it exhibits a maximum reverse leakage current of 5 µA and a Zener impedance of 70 Ohms at a test current of 6 mA.

Feature Summary

• Metallurgically bonded glass construction for robust surface-mount reliability
• Electrically compatible with the JEDEC registered 1N4728 through 1N4764 series
• High thermal stability supporting operation up to +175°C

Applications

• Voltage reference circuits requiring stable DC levels
• Over-voltage protection stages in electronic systems
• Clamping applications in signal processing paths

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches DO-213AB requirements. Ensure compliance with RoHS status as indicated in product documentation. Validate electrical parameters such as Zener voltage and leakage current during incoming inspection to guarantee circuit performance integrity.

Selection Notes

Select this component when a surface-mount solution is required for 43 V regulation. The DO-213AB package offers space efficiency compared to axial leads. Consider the high operating temperature limit for environments exceeding standard industrial ranges. Verify that the 1 W power rating aligns with the expected thermal load in the specific application design.

Part Context

This part belongs to the 1N47xx series of Zener diodes manufactured by Microchip Technology. The 'UR' suffix typically denotes the surface-mount MELF variant. This series provides standardized voltage regulation capabilities across various power ratings, serving as a fundamental passive component in analog and digital power management designs.

Replacement Considerations

Direct substitutes include other manufacturers' 1N4755A devices in DO-213AB packages. Cross-reference electrical parameters such as Zener voltage tolerance and impedance to ensure functional equivalence. Verify pinout compatibility and thermal characteristics before implementing any alternative component in the design.