NTE Electronics 2N3415 Silicon NPN Transistor for General Purpose Amplifier, 500 mA, 25V (Pack of 5): Amazon.com: Industrial & Scientific
Bridgold 10pcs MJE3055T MJE3055 NPN Bipolar (BJT) Single Transistor,10 A/60V,is Designed for General Purpose of Amplifier andswitching Applications: Amazon.com: Industrial & Scientific