1N4240

Single Zener Diodes Overview

The Microchip Technology 1N4240 is a standard recovery rectifier diode designed for through-hole mounting. It features an axial leaded package configuration suitable for general-purpose applications. The device is constructed using silicon technology and operates within a junction temperature range of -65°C to +175°C. Key electrical specifications include a maximum repetitive peak reverse voltage of 400 V and an average forward rectified current of 1 A. The component exhibits a maximum reverse leakage current of 1 µA at its rated voltage and maintains a typical forward voltage drop of 1.3 V at 3 A. The package type is identified as A, Axial.

Single Zener Diodes Feature Summary

• Standard recovery performance with defined reverse recovery time characteristics
• High-temperature operation capability up to +175°C junction temperature
• Hermetically sealed glass construction for environmental stability

Single Zener Diodes Applications

• General purpose rectification in power supplies
• Protection circuits requiring high voltage blocking
• Industrial equipment operating in extreme temperatures

Single Zener Diodes Procurement Notes

Verify the specific datasheet version and qualification status prior to procurement. Confirm that the required RoHS compliance aligns with project constraints, as this component may not meet all modern environmental directives. Ensure the axial package dimensions match the PCB footprint requirements. Validate the manufacturer's lot traceability if military or aerospace standards are mandated for the application.

Single Zener Diodes Selection Notes

Select the 1N4240 when a robust, high-voltage standard recovery diode is required for through-hole assembly. Consider the 400 V reverse voltage rating and 1 A current capacity against circuit demands. Evaluate the thermal management needs given the wide operating temperature range. Compare against similar series components like the 1N4245 or 1N4247 if different voltage ratings are necessary for the specific design topology.

Single Zener Diodes Part Context

This component belongs to the 1N4245 through 1N4249 series of standard recovery rectifiers manufactured by Microchip Technology. These devices share similar physical packaging and basic operational principles but differ primarily in their maximum repetitive peak reverse voltage ratings. The series is characterized by glass passivation and axial leads, providing reliability in harsh environments compared to plastic-packaged alternatives.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same family include the 1N4245 (200 V), 1N4246 (300 V), 1N4247 (600 V), and 1N4248 (700 V). Verify that the replacement part's voltage rating meets or exceeds the original circuit requirements. Ensure the current handling and package compatibility remain unchanged during substitution.