TIP127 PNP Power Darlington Transistor (TO-220)

Just as the BC557 complements the BC547 at low signal currents, the TIP127 is the PNP Darlington counterpart to the NPN TIP122, letting a high-side or opposite-polarity switching stage be built with the same current-handling capability rather than having to redesign the circuit's polarity around only having NPN Darlington parts on hand. Its 100V/5A rating matches the TIP122, making the pair a natural fit for complementary push-pull power stages, H-bridge motor driver designs, and any project schematic that specifically calls for a PNP Darlington transistor rather than its NPN equivalent.