1N4744A-T50A

Overview

The onsemi 1N4744A-T50A is a silicon planar Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 15 V with a tolerance of ±5%. The device is housed in the DO-41 axial leaded package, suitable for through-hole mounting. Key electrical characteristics include a maximum power dissipation of 1 W and a test current of 17 mA. The component operates within a temperature range from -65 °C to +200 °C junction temperature, ensuring reliability in demanding environments.

Feature Summary

• Utilizes silicon planar technology for stable voltage regulation
• Provides precise voltage control with ±5% tolerance at nominal rating
• Supports high thermal performance with extended operating temperature limits

Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection in power supply inputs
• Clamping applications in signal conditioning paths

Procurement Notes

Verify the specific suffix T50A against the manufacturer's official datasheet to confirm packaging details and compliance status. Ensure the selected variant matches the required axial lead configuration and thermal specifications for the target application environment before finalizing procurement.

Selection Notes

Select this component when a robust 15 V regulation point is needed in a standard through-hole footprint. Consider the 1 W power handling capability and wide temperature range for industrial or automotive contexts. Verify that the DO-41 package dimensions fit the PCB layout constraints and that the 17 mA test current aligns with the circuit design requirements.

Part Context

This part belongs to the widely used 1N47 series of Zener diodes, a standard family for general-purpose voltage regulation. The 1N4744 designation specifically identifies the 15 V variant within this lineage. The T50A suffix typically denotes specific tape-and-reel packaging or manufacturing lot attributes defined by onsemi for automated assembly processes.

Replacement Considerations

Direct substitutes include the generic 1N4744A from other manufacturers such as Vishay or Nexperia, provided they meet the same 15 V, 1 W, and DO-41 specifications. Cross-reference pinouts and thermal derating curves to ensure compatibility.