Transistor 2N3904 Bipolar (BJT) NPN General Purpose (Pack of 50): Transistor Pnp: Amazon.com: Industrial & Scientific
Bridgold 20pcs TIP31C TIP31 NPN Silicon Power Transistor,3 A 100 V TO220,3-Pin: Amazon.com: Industrial & Scientific
New 100 X S9018H S9018 9018 NPN Transistor TO-92: Amazon.com: Industrial & Scientific
Amazon.com: PNP NPN Transistors Kit, Three Pins Silicon Power Transistor Assorted Assortment Box Set Range 2N3904-MPS2907, 10Value,Pack of 200, by Ltvystore : Industrial & Scientific