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Components··7 min

Which Transistor for Your Pulse Motor? (2N3055, TIP31, and More)

Compare common transistors — switching speed, heat, current ratings, and recommendations.

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Watch the complete video: Which Transistor for Your Pulse Motor? (2N3055, TIP31, and More)

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Popular choices:

  • TIP31C — cheap beginner TO-220 (~3A)
  • 2N3055 — classic Bedini workhorse (~15A), needs heatsink
  • TIP35C — high current builds
  • MOSFET (e.g. IRFP250N) — fast switching, advanced control

Always heatsink. Check pinouts twice. For high RPM, transistor fT (transition frequency) and MOSFET gate drive quality matter.

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