1N4751A

Overview

The SMC Diode Solutions 1N4751A is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 30 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 1 W and operates within a temperature range of -65 °C to +200 °C. Packaged in the DO-41 axial leaded format, it exhibits a maximum reverse leakage current of 5 µA at 22.8 V and a Zener impedance of 40 Ω when tested at 8.5 mA.

Feature Summary

• Provides stable voltage regulation using silicon oxide passivation technology
• Capable of high operating temperatures up to 200 °C
• Features low reverse leakage current for efficient performance

Applications

• Voltage reference circuits
• Overvoltage protection
• Clipping and clamping applications

Procurement Notes

Verify the specific manufacturer designation, as the 1N4751A JEDEC number is utilized by multiple producers including onsemi, Microsemi, and Rectron. Confirm that the supplied component matches the required package style and compliance standards. Ensure the source documentation aligns with the specified electrical limits before integration into the design.

Selection Notes

Select this component for designs requiring a standard 30 V reference point in through-hole assemblies. The 1 W power rating supports moderate current loads, while the wide thermal range allows operation in demanding environments. Verify that the 40 Ω impedance meets the noise and stability requirements of the target circuit.

Part Context

This part belongs to the widely recognized 1N47xx series of 1 Watt Zener diodes. The series covers a broad spectrum of voltage values from 3.3 V to 100 V, providing engineers with standardized options for various regulation needs. The 1N4751A specifically addresses the 30 V segment of this extensive lineup.

Replacement Considerations

Direct substitutes include the 1N4751A manufactured by onsemi, Taiwan Semiconductor, and Central Semiconductor. Cross-reference specifications such as Zener impedance and leakage current to ensure compatibility with existing circuit constraints.