1N4743A-T50A

Overview

The onsemi 1N4743A-T50A is a single-channel general-purpose Zener diode housed in a DO-41 through-hole package. It features a nominal Zener voltage of 13 V with a tolerance of ±5%. The device supports a maximum power dissipation of 1 W and operates within a temperature range of -65°C to +200°C. Key electrical parameters include a test current of 19 mA, a maximum Zener impedance of 10 Ω, and a maximum reverse leakage current of 5 μA.

Feature Summary

• Provides stable voltage regulation at a nominal 13 V level for circuit protection and reference applications.
• Utilizes a robust DO-41 axial leaded glass case designed for reliable through-hole mounting.
• Engineered for extended thermal endurance with an operational range extending up to +200°C.

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in measurement systems

Procurement Notes

Verify the specific suffix T50A against official onsemi documentation to confirm packaging details and availability status. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity. Confirm RoHS compliance and REACH SVHC status prior to integration into final assemblies.

Selection Notes

Select this component when a standard 13 V Zener reference is required in a DO-41 form factor. Ensure the application demands a 1 W power rating and can accommodate the specified 10 Ω dynamic impedance. Verify that the operating environment stays within the -65°C to +200°C thermal limits defined by the datasheet.

Part Context

This component belongs to the 1N47 series of Zener diodes, a widely recognized family for general-purpose voltage regulation. The 1N4743 designation specifically identifies the 13 V variant within this lineage. The T50A suffix typically denotes specific tape-and-reel packaging configurations used in automated assembly processes.

Replacement Considerations

Compatible substitutes include 1N4743A from other manufacturers such as Nexperia or Taiwan Semiconductor, provided they match the 13 V nominal voltage, 1 W power rating, and DO-41 package dimensions.