It's commonly used in SMPS, LED lighting drivers, high-voltage converters, and PFC circuits.

Technically yes, but for full symmetrical output in audio amplifiers, both NPN and PNP counterparts are used.

It's physically large but provides excellent heat dissipation. Consider D2PAK SMD if space-constrained.

BJT-based transistors are less efficient than MOSFETs for high-frequency switching. Best for audio and linear supplies.

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