Transistor Assortment, Npn Transistor Transistors Assortment Kit for Industry for Plug Transistor for PNP Transistor for 2n3904 Npn Transistor: Amazon.com: Industrial & Scientific
Hilitchi 24-Values 2N2222-S9018 / BC327-BC558 NPN PNP Power General Purpose Transistors Assortment Kit - Pack of 840: Amazon.com: Industrial & Scientific
Amazon.com: NPN PNP Switching Transistor Set, in-line Triode TO-92 Power transistors Assorted Assortment Box Kit, Range 2N2222-S9015 & BC327-BC558, 24Value, Pack of 960 : Industrial & Scientific