1N4740DGE3/TR

Overview

The Microchip Technology 1N4740DGE3/TR is a single Zener diode with a nominal voltage of 10 V and a power dissipation rating of 1 W. It features a ±1% voltage tolerance and operates within a temperature range of -65 °C to +150 °C. The device utilizes an axial DO-204AL (DO-41) package and has a maximum reverse leakage current of 10 µA at a test current of 25 mA.

Feature Summary

• Provides precise voltage regulation with tight manufacturing tolerances
• Capable of operation in extreme thermal environments up to 150 °C
• Constructed using silicon technology for reliable performance

Applications

• Voltage reference circuits requiring high accuracy
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Procurement Notes

Verify the specific suffix 'DGE3' confirms the 1% tolerance variant, distinct from standard 10% tolerance versions like the 1N4740PE3. Confirm the 'TR' suffix indicates tape-and-reel packaging if automated assembly is required. Ensure the DO-204AL package matches your PCB footprint constraints. Cross-reference the datasheet for exact thermal resistance values relevant to your enclosure design.

Selection Notes

Select this component when circuit stability demands tighter voltage deviation than standard Zener diodes provide. The 1 W power rating supports moderate current handling in through-hole designs. Consider the axial lead form factor for manual assembly or legacy board layouts. Evaluate the operating temperature range against environmental conditions to ensure long-term reliability without derating.

Part Context

This part belongs to Microchip's 1N47xx series of axial Zener diodes. The 'GE3' suffix typically denotes RoHS compliance and specific manufacturing traceability standards. It serves as a precision alternative to general-purpose regulators, offering improved consistency across production batches for critical analog and digital power management tasks.

Replacement Considerations

Direct substitutes include other 10 V, 1 W Zener diodes with ±1% tolerance in DO-204AL packages. Verify pinout compatibility and thermal characteristics before swapping. Generic equivalents may lack the specific reliability data associated with Microchip components.