1N4444

Overview

The Microchip Technology 1N4444 is a small signal switching diode designed for general-purpose applications. It features a single configuration with a peak reverse voltage of 50 V and a maximum forward current of 250 mA. The device exhibits a fast recovery time of 7 ns, making it suitable for high-speed switching tasks. Electrical characteristics include a forward voltage of 1 V at rated current and a reverse leakage current of 50 nA. It supports a maximum surge current of 4 A and operates within a temperature range from -65 C to +200 C. The component utilizes through-hole mounting in a bulk package.

Feature Summary

• Fast switching capability with 7 ns recovery time
• High thermal stability up to +200 C junction temperature
• Robust surge current handling at 4 A

Applications

• Signal or computer diode circuits
• General purpose switching applications
• High speed rectification tasks

Procurement Notes

Verify the specific suffix designation when ordering, as variations such as 1N4444-1 may exist within the product line. Confirm RoHS compliance status directly with the manufacturer, as indicated by the 'N' designation in available specifications. Ensure the required package type matches the design constraints, noting that through-hole configurations are standard for this series. Cross-reference datasheets for precise electrical limits before finalizing procurement decisions.

Selection Notes

Select the 1N4444 for designs requiring rapid switching speeds and high thermal endurance. The 50 V reverse voltage rating suits low-voltage signal processing environments. Consider the 250 mA continuous forward current limit when sizing components for power dissipation. The wide operating temperature range allows deployment in harsh industrial conditions where standard silicon devices might fail.

Part Context

This component belongs to the 1N444x series of small signal switching diodes manufactured by Microchip Technology. These devices are engineered for reliability in digital logic and pulse applications. The series maintains consistent electrical performance across varying environmental conditions, supporting robust circuit designs in consumer electronics and industrial control systems.

Replacement Considerations

Public confirmed substitute part numbers were not identified in the provided documentation.