1N4731A,133

Overview

The Nexperia USA Inc. 1N4731A,133 is a single Zener diode housed in the DO-41 axial through-hole package. It provides a nominal Zener voltage of 4.3 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 characteristics include a maximum reverse leakage current of 10 µA at 1 V, a Zener impedance of 9 Ohms, and a test current of 58 mA.

Feature Summary

• Provides stable voltage regulation for general electronic applications
• Features hermetic-sealed glass encapsulation for environmental protection
• Supports high operating temperatures up to 200 °C

Applications

• General voltage regulation circuits
• Voltage reference functions
• Over-voltage protection

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and compliance status. Confirm availability as distribution status varies by region. Ensure the selected variant matches the required thermal and electrical specifications for the target application environment.

Selection Notes

Select this component when a 4.3 V reference is required in a robust axial package. The DO-41 form factor suits through-hole designs needing high thermal stability. Verify that the 1 W power rating and 9 Ohm impedance meet the circuit's dynamic load requirements.

Part Context

This part belongs to the standard 1N47xx series of 1 W Zener diodes. It is manufactured by Nexperia under the JEDEC designation 1N4731A. The ',133' suffix typically denotes specific tape-and-reel packaging configurations for automated assembly processes.

Replacement Considerations

Direct substitutes include the 1N4731A from other manufacturers such as Rectron or Microsemi. Cross-reference the ',133' suffix with the original manufacturer's documentation to ensure identical packaging and handling characteristics.