1N4731G

Overview

The Taiwan Semiconductor 1N4731G is a hermetically sealed glass body Zener diode with a nominal voltage of 4.3V and a ±5% tolerance. It operates within a power dissipation range of 1W and features a DO-41 package. The device supports a junction temperature range from -65°C to +200°C, with a maximum leakage current of 10µA at 1V reverse voltage. Its dynamic impedance is specified at 9Ω under test conditions.

Feature Summary

• Hermetically sealed glass encapsulation for environmental protection
• Wide operating junction temperature range up to 200°C
• Standardized axial lead configuration for through-hole mounting

Applications

• Low voltage stabilizers
• Voltage references
• Adapters
• Lighting applications
• On-board DC/DC converters

Procurement Notes

Verify the specific suffix against official datasheets to confirm packaging options such as reels or ammo boxes. Confirm RoHS compliance status and exact thermal resistance values for your specific application requirements before finalizing procurement orders.

Selection Notes

Select this component when high-temperature stability and hermetic sealing are required in a standard DO-41 form factor. Ensure the 4.3V nominal rating aligns with circuit design needs and verify that the 1W power dissipation capability meets the thermal management constraints of the target environment.

Part Context

This part belongs to the 1N4728G through 1N4758G series manufactured by Taiwan Semiconductor Corporation. The series provides a comprehensive selection of Zener voltages ranging from 3.3V to 56V, all sharing similar mechanical and electrical characteristics within the DO-41 package format.

Replacement Considerations

Cross-reference with other manufacturers' 1N4731A equivalents. Verify that substitute parts match the 4.3V nominal voltage, 1W power rating, and DO-41 package dimensions to ensure physical and electrical compatibility.