200Pcs PNP NPN Transistor Silica Gel Power Transistor Assortment Kit for Student Experiment, Maintenance and Production: Amazon.com: Industrial & Scientific
Basic In Circuit Transistor Tester NPN/PNP 2 x LED Unassembled kit: Amazon.com: Industrial & Scientific
Transistor Assortment, Npn Transistor Transistors Assortment Kit for Industry for Plug Transistor for PNP Transistor for 2n3904 Npn Transistor: 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