2N3904 NPN Small Signal Transistor: Electronics: Amazon.com: Industrial & Scientific
BJT Transistors Assortment Kit - Set of 210 PNP and NPN Assorted Transistors with 250 Assorted Resistors - Bipolar Transistor Pack with 2N3904 2N3906 S8050 2N2907 S8550 2N2222 BC337 C1815 BC327 A1015:
200Pcs PNP NPN Transistor Silica Gel Power Transistor Assortment Kit for Student Experiment, Maintenance and Production: Amazon.com: Industrial & Scientific
NTE Electronics 2N4401 Silicon NPN Transistor for General Purpose Amplifier and Switch, 600 mA, 40V (Pack of 5): Amazon.com: Industrial & Scientific
BJT Transistors Assortment Kit - Set of 210 PNP and NPN Assorted Transistors with 250 Assorted Resistors - Bipolar Transistor Pack with 2N3904 2N3906 S8050 2N2907 S8550 2N2222 BC337 C1815 BC327 A1015:
Major Brands TIP107. ICS and Semiconductors, Darlington PNP Transistor, 100vceo, 1000hfe, 3 Amp, 9.4 mm H x 4.83 mm W x 10.67 mm L (Pack of 10): Amazon.com: Industrial & Scientific