1N4740AUR-1

Overview

The Microchip Technology 1N4740AUR-1 is a Zener diode voltage regulator designed for surface-mount applications. It features a DO-213AA-2 (SMB) package and dissipates up to 1 W of power. The device maintains a nominal Zener voltage of 10 V with a tolerance of 5%. It operates reliably within an extended temperature range from -65 °C to +175 °C, ensuring stability in demanding environments.

Feature Summary

• Surface-mount construction in a compact DO-213AA-2 package for automated assembly
• High thermal stability supporting operation up to 175 °C junction temperature
• Precision voltage regulation with tight 5% tolerance at the specified test current

Applications

• Voltage reference circuits requiring high-temperature reliability
• Overvoltage protection in industrial control systems
• Clamping applications in automotive electronics

Procurement Notes

Verify the specific suffix UR-1 against official Microchip documentation to confirm the exact package variant and tape-and-reel specifications. Ensure compatibility with existing PCB footprints for the DO-213AA-2 form factor. Cross-reference RoHS compliance status directly with the manufacturer's latest datasheet before finalizing procurement orders.

Selection Notes

Select this component when a 10 V Zener reference is required in a surface-mount configuration capable of handling 1 W power dissipation. The wide operating temperature range makes it suitable for harsh environments where standard commercial-grade diodes would fail. Confirm that the 5% voltage tolerance meets the circuit design requirements for precision regulation.

Part Context

This part belongs to the 1N47xx series of Zener diodes manufactured by Microchip Technology. The series offers various voltage ratings in both through-hole and surface-mount packages. The 1N4740AUR-1 specifically adapts the classic 1N4740 electrical characteristics into a modern SMB surface-mount footprint for space-constrained designs.