1N4750AH

Overview

The 1N4750AH is a glass passivated junction silicon Zener diode manufactured by Taiwan Semiconductor Corporation. It provides a nominal Zener voltage of 27V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 1W and features a typical reverse leakage current of less than 5µA at 20.6V. It operates within a junction temperature range of -55°C to +150°C. The component utilizes a DO-204AL (DO-41) axial through-hole package. The 'H' suffix indicates AEC-Q101 qualification, while the 'G' suffix denotes a halogen-free green compound molding.

Feature Summary

• Glass passivated chip junction for enhanced stability
• Built-in strain relief in low profile package
• AEC-Q101 qualified automotive grade reliability
• Halogen-free green compound construction

Applications

• Switching mode power supply (SMPS)
• On-board DC/DC converter regulation

Procurement Notes

Verify the specific suffix configuration when ordering, as the 'H' suffix confirms AEC-Q101 automotive qualification and the 'G' suffix indicates halogen-free material composition. Confirm that the required package matches the DO-204AL (DO-41) axial form factor. Ensure compliance with RoHS Directive 2011/65/EU and WEEE 2002/96/EC requirements for your specific manufacturing environment.

Selection Notes

Select this component for applications requiring a standard 27V reference with high reliability standards. The AEC-Q101 qualification makes it suitable for automotive electronics where environmental stress resistance is critical. The glass passivation offers superior protection against chemical corrosion compared to non-passivated alternatives. Consider the 1W power rating for thermal management in dense circuit layouts.

Part Context

This part belongs to the 1N47xx series of Zener diodes produced by Taiwan Semiconductor. The series covers a wide voltage range from 10V to 200V with consistent mechanical and electrical characteristics. The 1N4750AH specifically targets the 27V segment, offering a balance of precision and robustness for general-purpose voltage regulation tasks in both industrial and automotive sectors.

Replacement Considerations

Cross-reference with other manufacturers' 1N4750A equivalents such as those from onsemi or Rectron. Verify that substitute parts meet the same 27V nominal voltage, 1W power rating, and ±5% tolerance. Check if automotive qualification (AEC-Q101) is mandatory for the application, as generic replacements may lack this certification.