1N4758UR-1

Overview

The Microchip Technology 1N4758UR-1 is a Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 56 V and a maximum power dissipation of 1 W. The component utilizes an SMD/SMT installation style within the DO-213AA-2 package, also known as SOD-80C. Key electrical specifications include a maximum reverse leakage current of 5 µA at 42.6 V and a Zener impedance of 110 Ohms. The device operates across a temperature range from -65°C to +175°C.

Feature Summary

• Provides stable voltage regulation with a nominal 56 V Zener breakdown voltage.
• Capable of handling up to 1 W of power dissipation in a compact surface-mount form factor.
• Engineered for high-temperature reliability with an extended operating range up to 175°C.

Applications

• Voltage reference circuits requiring precise potential levels.
• Over-voltage protection stages in electronic systems.
• Clamping applications in signal processing paths.

Procurement Notes

Verify the specific suffix UR-1 against official Microchip documentation to confirm the exact package type and marking. Ensure compatibility with automated placement equipment due to the small SOD-80C footprint. Cross-reference datasheet parameters such as thermal resistance and leakage currents for your specific operating conditions before finalizing procurement.

Selection Notes

Select this component when a 56 V regulation point is required in a space-constrained design. The DO-213AA-2 package offers a smaller profile compared to through-hole alternatives like DO-41. Consider the 1 W power rating and high-temperature capability for robust performance in demanding environments where standard commercial grade parts may fail.

Part Context

This part belongs to the 1N47xx series of Zener diodes manufactured by Microchip Technology. The series is widely recognized for providing reliable voltage regulation in various industrial and consumer electronics. The UR-1 suffix typically denotes a specific surface-mount variant within this legacy numbering system, adapting traditional axial designs for modern PCB assembly techniques.

Replacement Considerations

Direct substitutes include the onsemi 1N4758A or MCC 1N4758A-TP, though these are through-hole devices requiring different mounting strategies. For surface-mount replacements, verify equivalent packages like SOD-80C with matching 56 V and 1 W ratings from other manufacturers.