MJH10012

Single Bipolar Transistors Overview

The MJH10012 is a high-voltage, high-current NPN silicon Darlington power transistor manufactured by Motorola. It features a collector-emitter sustaining voltage of 400 Vdc (minimum) and a power capability of 175 Watts at 50 Volts. Designed for automotive ignition, switching regulators, and motor control applications, the device undergoes specific automotive functional tests to ensure reliability in demanding environments.

Single Bipolar Transistors Feature Summary

• High-voltage NPN silicon Darlington construction
• Automotive functional testing compliance
• High power handling capability

Single Bipolar Transistors Applications

• Automotive ignition systems
• Switching regulators
• Motor control circuits

Single Bipolar Transistors Procurement Notes

Verify the manufacturer source carefully, as multiple vendors including Mospec, ON Semiconductor, and Central Semiconductor produce parts with this designation. Confirm that the specific unit meets the original Motorola electrical specifications, particularly the 400V minimum sustaining voltage and 175W power rating, before integration into critical designs.

Single Bipolar Transistors Selection Notes

Select this component when a high-voltage, high-current switching solution is required for automotive or industrial power management. The Darlington configuration provides high current gain, simplifying drive circuitry. Ensure the thermal design accommodates the 175W capability and that the 400V breakdown voltage exceeds the maximum circuit operating voltage.

Single Bipolar Transistors Part Context

This part belongs to a family of high-power Darlington transistors from Motorola, which includes variants such as the MJ10012, MJ10000, and MJ10005. These devices are characterized by their robust voltage and current handling, making them suitable for heavy-duty power switching tasks where standard transistors would fail.

Single Bipolar Transistors Replacement Considerations

Direct substitutes include the MJ10012 and MJ10005 from various manufacturers. Verify pinout compatibility and ensure the replacement meets the 400V VCEO(sus) and 175W power dissipation requirements.