1N4740AHR1G

Overview

The 1N4740AHR1G is a through-hole Zener diode manufactured by Taiwan Semiconductor in the DO-204AL (DO-41) package. It features a nominal Zener voltage of 10 V with a 5% tolerance and a maximum power dissipation of 1 W. The device operates within a temperature range of -55°C to +150°C, has a maximum reverse leakage current of 10 µA, and a Zener impedance of 7 Ohms at a test current of 46 mA.

Feature Summary

• Provides stable voltage regulation for general-purpose applications
• Utilizes a glass passivated junction for enhanced reliability
• Designed for high-temperature operation up to 150°C

Applications

• Voltage reference circuits
• Overvoltage protection
• Clipping and clamping circuits

Procurement Notes

Verify component authenticity and datasheet alignment before procurement. Confirm that the specific suffix denotes reel packaging rather than functional changes. Ensure the supplier provides traceable documentation matching the manufacturer's specifications for quality assurance.

Selection Notes

Select this component when a standard 10 V regulation point is required in a through-hole assembly. Consider its 1 W power rating and wide operating temperature range for robust circuit designs. Verify compatibility with existing PCB footprints and thermal management requirements.

Part Context

This part belongs to the 1N47xx series of axial leaded Zener diodes. It shares the JEDEC outline with other variants in the family but differs in breakdown voltage. The 'AH' designation typically indicates automotive-grade qualification or specific manufacturing standards within the manufacturer's portfolio.

Replacement Considerations

Cross-reference with 1N4740A from onsemi or Formosa MS. Verify pinout compatibility and ensure replacement parts meet the same 1 W power and 10 V voltage specifications.