1N4755AHR1G

Single Zener Diodes Overview

The 1N4755AHR1G is a single silicon Zener diode manufactured by Taiwan Semiconductor, designed for voltage regulation applications. It features a nominal Zener voltage of 43 V with a tolerance of 5%. The device is housed in the DO-204AL (DO-41) axial lead package and supports through-hole mounting. It has a maximum power dissipation of 1 W at 25°C and operates within a temperature range of -65°C to +200°C. Key electrical characteristics include a maximum reverse leakage current of 5 µA and a Zener impedance of 70 Ohms at a test current of 6 mA. The component holds AEC-Q101 qualification.

Single Zener Diodes Feature Summary

• Glass passivated junction construction for enhanced stability
• AEC-Q101 qualified for automotive reliability standards
• Built-in strain relief in the DO-41 package
• Low inductance design suitable for high-frequency circuits

Single Zener Diodes Applications

• Voltage reference circuits in automotive electronics
• Overvoltage protection in vehicle power systems
• Clamping applications in automotive control modules
• General-purpose voltage regulation in industrial equipment

Single Zener Diodes Procurement Notes

Verify the specific suffix HR1G to confirm AEC-Q101 automotive qualification and reel packaging configuration. Ensure compatibility with RoHS directives and halogen-free requirements as specified in the datasheet. Confirm that the DO-41 package dimensions match the target PCB layout constraints before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a 43 V regulated voltage is required in an automotive or harsh environment application. The AEC-Q101 certification ensures suitability for automotive-grade designs requiring high thermal stability up to 200°C. Compare the 70 Ohm impedance against circuit sensitivity requirements to ensure adequate regulation performance under varying load conditions.

Single Zener Diodes Part Context

This part belongs to the 1N47xxA series of glass-passivated Zener diodes from Taiwan Semiconductor. The series covers a wide voltage range from 3.3 V to 100 V. The HR1G suffix indicates automotive qualification and specific tape-and-reel packaging, distinguishing it from standard bulk-packaged variants in the same family.

Single Zener Diodes Replacement Considerations

Direct substitutes include other manufacturers' 1N4755A parts in the DO-41 package. Verify that replacement components meet the same 43 V nominal voltage, 5% tolerance, and 1 W power rating. Ensure any alternative also satisfies AEC-Q101 requirements if the original automotive qualification is critical to the design.