1N4730A-T50A

Overview

The onsemi 1N4730A-T50A is a silicon planar Zener diode designed for voltage regulation and clipping applications. It features a DO-41 glass case with axial leads. The nominal Zener voltage is 3.9 V with a tolerance of ±5%. Maximum power dissipation is 1.0 W at lead temperatures up to 50°C, derating by 6.67 mW/°C above this threshold. Operating and storage temperature ranges span from -65°C to +200°C. Electrical characteristics include a maximum Zener impedance of 9 Ω at the test current of 64 mA and a maximum reverse leakage current of 50 µA at 1 V.

Feature Summary

• Provides stable voltage regulation within a tight 5% tolerance band
• Utilizes a hermetically sealed glass DO-41 package for environmental protection
• Supports high junction temperatures up to 200°C for demanding thermal environments

Applications

• Voltage stabilization circuits
• Signal clipping applications
• Reference voltage generation

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm that the part number matches the specific suffix requirements for your assembly process. Check for RoHS compliance status if required by your manufacturing standards. Ensure proper handling procedures are followed due to the glass encapsulation type.

Selection Notes

Select this component when a precise 3.9 V reference is needed in a standard axial leaded package. Consider the 1.0 W power rating and thermal derating curves for circuit design. Evaluate the low leakage current specifications for sensitive analog applications. Compare against other series members for alternative voltage levels within the same family.

Part Context

This device belongs to the 1N4728A through 1N4758A series of 1-watt Zener diodes manufactured by onsemi. The series offers an extensive selection of voltages ranging from 3.3 V to 100 V. These components are widely used in general-purpose electronic circuits requiring reliable voltage regulation. The DO-41 package provides a robust mechanical solution for through-hole mounting.

Replacement Considerations

Compatible substitutes include the 1N4730A and 1N4730AP from various manufacturers. Ensure replacement parts maintain the same 3.9 V nominal voltage and 5% tolerance. Verify that the substitute component supports the required 1.0 W power dissipation and operates within the specified temperature range.