1N4730A

Overview

The onsemi 1N4730A is a single-channel Zener diode housed in a DO-41 through-hole package. It features a nominal Zener voltage of 3.9V with a 5% tolerance, tested at 64mA. The device supports a maximum power dissipation of 1W and exhibits a maximum Zener impedance of 9Ω. It operates within a temperature range of -65°C to +200°C and has a maximum reverse leakage current of 50µA.

Feature Summary

• Provides stable voltage regulation using silicon junction technology
• Features double slug construction for robust performance
• Utilizes oxide passivated die design

Applications

• Voltage reference circuits
• Overvoltage protection systems
• General purpose rectification applications

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm exact electrical tolerances and packaging configurations. Confirm RoHS compliance status and lead material specifications directly from the manufacturer datasheet before procurement.

Selection Notes

Select this component when a precise 3.9V regulation point is required in axial-lead designs. Ensure the operating environment remains within the specified thermal limits to maintain the rated 1W power dissipation capability without derating.

Part Context

This part belongs to the 1N4728A through 1N4758A series of Zener diodes manufactured by onsemi. The series utilizes a DO-41 glass case and offers extensive voltage selection ranging from 3.3V to 100V across various models.

Replacement Considerations

Cross-reference with other manufacturers offering the standard 1N4730A designation. Verify that substitute parts match the 3.9V nominal voltage, 1W power rating, and DO-41 package dimensions.