1N4741A

Overview

The Fairchild Semiconductor 1N4741A is a silicon unidirectional Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 11V with a tolerance of ±5%. The device is housed in the DO-41 axial leaded plastic package, supporting through-hole mounting. It offers a maximum power dissipation of 1W at 25°C and operates within an extended temperature range from -65°C to +200°C. Key electrical characteristics include a maximum dynamic impedance of 8Ω and low leakage current, ensuring high reliability in electronic circuits.

Feature Summary

• High peak reverse power dissipation capability
• Low leakage current for improved efficiency
• High reliability construction suitable for demanding environments

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive components
• Reference voltage generation in analog circuits

Procurement Notes

Verify the manufacturer origin as Fairchild Semiconductor or its successors (e.g., ON Semiconductor) when sourcing, as the brand has undergone corporate changes. Confirm RoHS compliance status and specific lot traceability requirements against your project specifications. Ensure the DO-41 package dimensions match your PCB footprint constraints before finalizing procurement decisions.

Selection Notes

Select this component when an 11V regulation point is required with standard axial packaging. Consider the 1W power rating and thermal derating curves for high-temperature environments. Compare dynamic impedance and leakage specifications against alternative manufacturers if strict performance margins are necessary for the specific application design.

Part Context

This part belongs to the widely used 1N47xx series of Zener diodes, which provides a comprehensive range of voltage values from 3.3V to 200V. The 1N4741A specifically addresses the 11V segment of this lineup. These diodes are industry-standard components commonly found in general-purpose electronics, industrial controls, and consumer appliances requiring stable voltage references.

Replacement Considerations

Equivalent parts include Vishay 1N4741A, Nexperia 1N4741A, and Taiwan Semiconductor 1N4741A. Verify pinout compatibility and package dimensions (DO-41) before substitution. Ensure replacement devices meet the same 1W power dissipation and 11V nominal voltage specifications.