Amazon.com: Pack of 2 4N25 Optocoupler DC-in 1-CH Transistor with Base DC-Out 6-Pin PDIP : Automotive
NTE Electronics NTE123AP-10 NPN Silicon Transistor for Audio Amplifier, Switch, TO-92 Case, 0.6A Continuous Collector Current, 60V Collector-Base Voltage (Pack of 10): Amazon.com: Industrial & Scientific
ST Micro TIP36C General Purpose BJT PNP Transistor, 100V, 25 Amp, 3-Pin, 3+ Tab TO-247 Tube, 20.15 mm H x 15.75 mm L x 5.15 mm W (Pack of 3): Amazon.com: Industrial & Scientific
MAJOR BRANDS - HAT2486 Major Brands TIP122. Transistor, Darlington, NPN, 100 Volt, 5 Amp, 3-Pin, 4.83 mm W x 9.4 mm H x 10.67 mm L (Pack of 10): Amazon.com: Industrial & Scientific
BOJACK 5 Pairs 2SA1943 2SC5200 Amplifier Transistor PNP NPN High Power Black Audio SiliconTransistor TO-3PL (Pack of 10 pcs): Amazon.com: Industrial & Scientific