Fairchild Semiconductor TIP120(FSC) Darlington NPN Transistor, 60V, 5 Amp, 3-Pin, 3+ Tab TO-220 Bulk, 9.2 mm H x 9.9 mm L x 4.5 mm W (Pack of 10): Amazon.com: Industrial & Scientific
Amazon.com: 10x TIP120 NPN BJT ST Darlington Transistor TO-220 for Arduino with Free Diodes : Industrial & Scientific
Major Brands TIP120-R Transistor, Tip 120, NPN Power, Darlington (Pack of 10): Amazon.com: Industrial & Scientific