1N4744UR-1

Overview

The Microchip Technology 1N4744UR-1 is a silicon planar power Zener diode designed for voltage regulation applications. It operates within a temperature range of -65°C to +175°C and features a maximum power dissipation of 1 W. The device utilizes the DO-213AA-2 (SMA) surface-mount package, measuring 5.2 mm in length and 2.66 mm in diameter. It maintains a voltage tolerance of 10% and exhibits a forward voltage of 1.2 V at a specified test current.

Feature Summary

• Provides stable voltage regulation using silicon planar technology
• Supports high-temperature operation up to 175°C
• Designed for surface-mount assembly via DO-213AA-2 package

Applications

• Voltage regulation circuits
• High-temperature electronic systems
• Surface-mount board designs

Procurement Notes

Verify the specific suffix UR-1 against official Microchip documentation to confirm exact electrical tolerances and packaging details. Confirm RoHS compliance status as indicated in manufacturer records. Ensure the DO-213AA-2 footprint matches the target PCB design before procurement.

Selection Notes

Select this component when a 1 W surface-mount Zener diode with extended temperature capability is required. The DO-213AA-2 package offers a compact form factor suitable for automated assembly processes. Verify that the 10% voltage tolerance meets the circuit requirements.

Part Context

This part belongs to the Microchip Technology 1N4744 series of power Zener diodes. The series includes various package options such as axial leaded and surface-mount configurations. The UR-1 designation specifically identifies the surface-mount variant within this product family.

Replacement Considerations

Cross-reference with other manufacturers offering DO-213AA-2 packaged Zener diodes with equivalent 1 W power ratings and 175°C operating temperatures. Verify pinout compatibility and thermal characteristics before substitution.