1N2155

Single Diodes Overview

The 1N2155 is a standard rectifier diode manufactured by Microchip Technology, designed for general-purpose power applications. It features a maximum DC reverse voltage of 100 V and an average forward rectified current of 25 A. The device utilizes a DO-5 (DO-203AB) stud-mount package, suitable for high-current environments. It operates within a junction temperature range of -65°C to 200°C and exhibits a forward voltage drop of 1.19 V at 90 A. The component has a standard recovery speed exceeding 500 ns and maintains a low reverse leakage current of 10 µA at 50 V.

Single Diodes Feature Summary

• High current handling capability with a 25 A average forward rectified rating
• Robust thermal performance supporting junction temperatures up to 200°C
• Standard recovery speed suitable for general-purpose rectification tasks
• Durable stud-mount construction for secure mechanical attachment

Single Diodes Applications

• Industrial power supply rectification circuits
• Battery charging systems requiring high current capacity
• Welding equipment power stages
• Motor drive inverter bridges

Single Diodes Procurement Notes

Verify the specific manufacturing lot date code against project requirements before procurement. Confirm that the DO-5 stud-mount interface matches the thermal management design on the target PCB or chassis. Ensure the mounting surface preparation meets the manufacturer's torque specifications to maintain reliable electrical contact and heat dissipation during operation.

Single Diodes Selection Notes

Select this component when a robust, high-current solution is required for low-frequency rectification. The 100 V reverse voltage rating provides adequate margin for standard 48 V or lower bus systems. Consider the physical dimensions of the DO-5 package and the necessary hardware for stud mounting during the initial layout phase to ensure proper integration.

Single Diodes Part Context

This part belongs to Microchip's legacy discrete semiconductor portfolio, specifically within the standard rectifier category. It serves as a rugged alternative to modern surface-mount devices in applications where mechanical stability and high thermal mass are critical. The DO-5 package represents a traditional through-hole technology form factor widely used in heavy-duty industrial electronics.

Single Diodes Replacement Considerations

Direct replacements must match the 25 A current rating, 100 V reverse voltage, and DO-5 stud-mount package. Verify that any substitute diode maintains comparable forward voltage characteristics and thermal resistance values to ensure equivalent performance in the existing circuit design without requiring layout modifications.