Major Brands TIP102-VP Darlington NPN Transistor, 100 Volt, 8 Amp, 3-Pin, TO-220 Amp B Rail, 9.28 mm H x 4.82 mm W x 10.28 mm L (Pack of 10): Amazon.com: Industrial & Scientific
Amazon.com: 3 pcs OF MPSA18 NPN General Purpose Transistor : Industrial & Scientific
Transistor 2N3904 Bipolar (BJT) NPN General Purpose (Pack of 50): Transistor Pnp: Amazon.com: Industrial & Scientific
Ardest 100 Pcs Standard 2N2222 NPN TO-92 Plastic-Encapsulate Power Transistors 75V 600mA for Arduino & Raspberry Pi Projects: Amazon.com: Industrial & Scientific
Major Brands TIP102-VP Darlington NPN Transistor, 100 Volt, 8 Amp, 3-Pin, TO-220 Amp B Rail, 9.28 mm H x 4.82 mm W x 10.28 mm L (Pack of 10): Amazon.com: Industrial & Scientific