MJ11021G

Single Bipolar Transistors Overview

The MJ11021G is a high-power NPN silicon transistor manufactured by onsemi, designed for demanding audio and RF power amplifier applications. It features a complementary pair configuration with the MJ11020 PNP device to ensure matched electrical characteristics for balanced circuit performance. The component utilizes a rugged TO-3 metal case package, providing superior thermal dissipation capabilities essential for high-current operations. Key electrical parameters include a collector-emitter voltage rating of 80V, a continuous collector current capacity of 15A, and a maximum power dissipation of 150W at 25°C. These specifications define its operational limits within standard electronic design constraints.

Single Bipolar Transistors Feature Summary

• Complementary pairing with MJ11020 ensures matched hFE and VBE characteristics for balanced push-pull amplifier stages.

Single Bipolar Transistors Applications

• High-fidelity audio power amplifiers
• RF power output stages
• Linear regulator circuits requiring high current handling

Single Bipolar Transistors Procurement Notes

Verify the specific suffix 'G' against official onsemi documentation to confirm compliance with RoHS directives and halogen-free status. Ensure the ordering part number matches the exact thermal and electrical specifications required for your design. Cross-reference datasheet revision dates to confirm parameter updates before finalizing procurement contracts.

Single Bipolar Transistors Selection Notes

Select this component when designing linear amplifiers requiring matched NPN/PNP pairs for minimal crossover distortion. Verify that the thermal management system can handle the 150W dissipation limit in the TO-3 package. Confirm that the 80V breakdown voltage exceeds the peak supply voltages of the target application to prevent device failure.

Single Bipolar Transistors Part Context

This device belongs to onsemi's legacy high-power transistor lineup, often used in professional audio equipment. It serves as the NPN counterpart to the MJ11020, forming a complementary pair. The TO-3 package is standard for industrial and audio power applications requiring robust mechanical mounting and efficient heat sinking.

Single Bipolar Transistors Replacement Considerations

Direct replacements must match the MJ11021G electrical profile and TO-3 footprint. Verify compatibility with the MJ11020 PNP pair if maintaining original circuit balance. Check manufacturer datasheets for updated pinouts and thermal resistance values before substitution.