Amazon.com: IIVVERR BT138-600F Fast Switching Speed Semiconductor NPN Power Transistor 600V (BT138-600F Transistor de potencia NPN de semiconductores de velocidad de conmutación rápida 600V : Industrial & Scientific
Amazon.com: PNP NPN Transistors Kit, Three Pins Silicon Power Transistor Assorted Assortment Box Set Range 2N3904-MPS2907, 10Value,Pack of 200, Ltvystore : Industrial & Scientific
Major Brands TIP120. Transistor, Darlington, NPN, 60 Volt, 5 Amp, 3-Pin, 3+ Tab, TO-220, AmpB, Rail (Pack of 15): Amazon.com: Industrial & Scientific