1N4730ATR

Overview

The onsemi 1N4730ATR is a single-channel Zener diode with a nominal voltage of 3.9V and a maximum power dissipation of 1W. It utilizes a DO-41 through-hole package with two pins. The device features a 5% voltage tolerance, a test current of 64mA, and a maximum Zener impedance of 9Ω. Maximum reverse leakage current is specified at 50µA. Operating temperatures range from -65°C to +200°C.

Feature Summary

• Utilizes double slug type construction for robust performance
• Features metallurgically bonded die for enhanced reliability
• Includes oxide passivated die structure

Applications

• Voltage regulation circuits
• Reference voltage generation
• Overvoltage protection

Procurement Notes

Verify the specific suffix against official datasheets to confirm packaging variations such as reel or cut tape formats. Confirm RoHS compliance status and lead-free specifications directly with the manufacturer documentation. Ensure the component matches the required DO-41 package dimensions and pin configuration for your assembly process.

Selection Notes

Select this component when a precise 3.9V reference is required in axial-lead applications. Consider the 1W power rating and high operating temperature limit for thermal management. Verify that the 5% tolerance meets circuit requirements compared to tighter tolerance alternatives.

Part Context

This part belongs to the standard 1N47 series of Zener diodes manufactured by onsemi. It is designed for general-purpose voltage regulation tasks requiring reliable axial-lead mounting. The device represents a legacy component widely used in industrial and consumer electronics for stable voltage clamping.

Replacement Considerations

Equivalent parts include the 1N4730A and 1N4730ARL2. Verify compatibility regarding package style and electrical parameters before substitution.