MJD122

Single Bipolar Transistors Overview

The MJD122 is an NPN Darlington transistor in a TO-252-2L surface-mount package. It features a collector-emitter breakdown voltage of 100 V and a continuous collector current rating of 8 A. The device dissipates up to 1.5 W of power and operates within a junction temperature range of -55°C to 150°C. Electrical characteristics include a minimum DC current gain (hFE) of 1000 at 4 A and 4 V, with a maximum collector-base leakage current of 10 µA.

Single Bipolar Transistors Feature Summary

• High DC current gain for efficient signal amplification
• Built-in damper diode between emitter and collector
• Electrically similar to the TIP122 standard

Single Bipolar Transistors Applications

• High-current switching applications
• Power amplifier circuits
• Motor control systems

Single Bipolar Transistors Procurement Notes

Verify the manufacturer designation EVVO against the specific datasheet revision. Confirm the TO-252-2L package pinout matches the intended PCB footprint. Ensure RoHS3 compliance requirements are met for the target assembly process. Check storage conditions relative to the specified temperature limits.

Single Bipolar Transistors Selection Notes

Select this component when a high-gain NPN switch is required in a compact SMD form factor. The integrated damper diode simplifies inductive load driving by suppressing back EMF. Verify that the 8 A current rating and 1.5 W power dissipation align with the thermal management capabilities of the final design.

Single Bipolar Transistors Part Context

This part belongs to the family of NPN plastic-encapsulated transistors manufactured by EVVO. It serves as a surface-mount alternative to through-hole equivalents like the TIP122. The TO-252-2L package provides a balance between power handling and board space efficiency for consumer and industrial electronics.

Single Bipolar Transistors Replacement Considerations

The datasheet notes electrical similarity to the TIP122. Verify pin compatibility and thermal resistance differences before substitution. No other specific substitute part numbers are documented in the provided source material.