1N4751A

Overview

The onsemi 1N4751A is a single-channel Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 30 V with a standard tolerance of ±5%. The device supports a maximum power dissipation of 1 W and operates within an extended temperature range from -65 °C to +200 °C. Packaged in the DO-41 through-hole format, it exhibits a maximum reverse leakage current of 5 µA and a Zener impedance of 40 Ω at a test current of 8.5 mA.

Feature Summary

• Provides stable voltage regulation using silicon planar technology.
• Features hermetic glass passivation for corrosion resistance and reliability.
• Supports high-temperature operation up to 200 °C.

Applications

• Voltage reference circuits
• Overvoltage protection
• General-purpose voltage regulation

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type and compliance status. Ensure the selected variant matches the required thermal and electrical specifications for the target application environment.

Selection Notes

Select this component when a 30 V regulation point is required in a through-hole assembly. Consider the 1 W power rating and ±5% tolerance for circuit design margins. Verify compatibility with the DO-41 footprint during PCB layout.

Part Context

This part belongs to the widely used 1N47xx series of 1-watt Zener diodes. It serves as a standard discrete semiconductor solution for basic voltage clamping and reference tasks in industrial and consumer electronics.

Replacement Considerations

Cross-reference with other manufacturers' 1N4751A parts or equivalent JEDEC registered numbers. Verify pinout and package dimensions match the existing board layout before substitution.