1N4740A-T

Overview

The Vishay General Semiconductor - Diodes Division 1N4740A-T is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 10 V with a tolerance of ±5%. The component operates in the DO-41 axial leaded package, supporting through-hole mounting. It dissipates up to 1 W of power at ambient temperature and withstands reverse currents up to 10 µA. The device maintains functionality across an extended temperature range from -65 °C to +175 °C junction temperature.

Feature Summary

• Provides stable voltage regulation via avalanche breakdown characteristics
• Utilizes robust glass passivation for environmental protection
• Supports high thermal stability within specified operating limits

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• Clamping applications for transient suppression

Procurement Notes

Verify the specific suffix designation against manufacturer documentation to confirm packaging type and compliance status. Ensure the ordered variant matches the required thermal and electrical specifications for the target application environment. Cross-reference datasheets for any updates regarding material composition or manufacturing changes.

Selection Notes

Select this component when a standard 10 V regulation point is required in through-hole designs. Consider the 1 W power dissipation capability and the ±5% voltage tolerance during circuit design. Evaluate the thermal management requirements based on the expected current flow and ambient conditions to ensure reliable operation within the specified temperature range.

Part Context

This part belongs to the widely recognized 1N47 series of Zener diodes, established for general-purpose voltage regulation. The 1N4740A variant specifically targets the 10 V market segment. Vishay manufactures this component using standardized processes to ensure consistency across production batches and compatibility with existing circuit layouts.

Replacement Considerations

Equivalent parts include the 1N4740A from other manufacturers such as onsemi or Microchip, provided they meet the same 10 V, 1 W, and DO-41 package specifications. Verify pinout compatibility and thermal ratings before substitution.