1N4942-1

Overview

The Microchip Technology 1N4942-1 is a fast recovery rectifier diode designed for through-hole mounting. It features a maximum repetitive peak reverse voltage of 200 V and an average forward rectified current of 1 A. The device exhibits a typical reverse recovery time of 150 ns and a maximum non-repetitive peak surge current of 15 A. Operating junction temperatures range from -65°C to +175°C, with a maximum forward voltage drop of 1.3 V at rated current.

Feature Summary

• Fast recovery performance suitable for high-speed switching applications
• High temperature metallurgically bonded construction for thermal stability
• Glass passivated cavity-free junction ensuring reliability
• Capable of operation without thermal runaway at rated conditions

Applications

• General purpose rectification in power supplies
• High frequency switching circuits
• Industrial control systems requiring robust diode protection

Procurement Notes

Verify the specific suffix designation when ordering, as package or qualification variations may exist within the product family. Confirm compliance requirements such as RoHS status against project specifications, noting that certain variants may not meet standard environmental directives. Cross-reference datasheet revision dates to ensure alignment with current manufacturing standards and assembly site information.

Selection Notes

Select this component for designs requiring a 200 V blocking capability with 1 A continuous current handling. The fast recovery characteristic makes it appropriate for frequencies where standard rectifiers would exhibit excessive losses. Ensure the circuit layout accommodates the axial leaded package dimensions and provides adequate thermal management for the specified operating temperature range.

Part Context

This part belongs to the 1N494x series of glass passivated junction fast switching rectifiers manufactured by Microchip Technology. The series offers various voltage ratings from 200 V to 1000 V while maintaining a consistent 1 A forward current rating. These devices are commonly used in applications demanding reliable performance under high temperature conditions.

Replacement Considerations

Direct parameter-equivalent substitutes include the base model 1N4942 from Microchip Technology. Other manufacturers may offer compatible parts meeting similar electrical specifications, but verification of pinout and package compatibility is required before substitution.