1N4754A

Overview

The onsemi 1N4754A is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 39 V with a standard tolerance of 5%. The device supports a power dissipation of 1 W and operates within an extended temperature range from -65 °C to +200 °C. Key electrical characteristics include a maximum reverse leakage current of 5 µA, a Zener impedance of 60 Ohms, and a test current of 6.5 mA. It utilizes a DO-41-2 through-hole package.

Feature Summary

• Provides stable voltage regulation at a nominal 39 V reference level
• Capable of handling 1 W power dissipation in a robust axial leaded package
• Engineered for high thermal stability with operation up to +200 °C

Applications

• General purpose voltage regulation circuits
• Reference voltage sources in electronic systems
• Overvoltage protection stages

Procurement Notes

Verify the specific manufacturer marking and datasheet revision when sourcing components. Confirm that the package matches the DO-41-2 specification required by the design. Ensure compliance with RoHS and REACH directives if applicable to the target market. Cross-reference part numbers carefully as variations exist across different semiconductor manufacturers.

Selection Notes

Select this component when a precise 39 V regulation point is required with moderate power handling capabilities. The wide operating temperature range makes it suitable for demanding environments. Compare the 60 Ohm impedance against circuit sensitivity requirements. Verify that the 5% voltage tolerance aligns with the system's accuracy constraints.

Part Context

This component belongs to the widely recognized 1N47xx series of 1 W Zener diodes. These devices are standard industry choices for low-to-medium power voltage clamping and regulation tasks. The 1N4754A specifically targets the 39 V segment of this extensive lineup, offering a reliable solution for discrete diode applications.

Replacement Considerations

Equivalent parts from other manufacturers may share identical electrical specifications but can differ in physical dimensions or marking styles. Verify pinout compatibility and thermal resistance values before substitution.