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600Pcs 15 Kinds of Values X 40 Pcs NPN PNP Transistor TO-92 Kit Set with Plastic Box: Amazon.com: Industrial & Scientific
Hilitchi 675-Piece 15 Values 2N2222-S9018 NPN PNP Power General Purpose Transistors Assortment Kit: Amazon.com: Industrial & Scientific
Amazon.com: Shipenophy 4 Channel NPN to PNP Conversion Level Converter Wide Voltage 10 28V 7x6x4 Durable Channel : Electronics
Amazon.com: Level Conversion, 4 Channel Line Output Converter, NPN to PNP Conversion Level Converter, DG07 Converter for Mechanicalcomponents : Electronics
Transistor Assortment Kit, High Dielectric Strength PNP Transistor Straight Plug for NonContact Switch to Control Current: Amazon.com: Industrial & Scientific
PATIKIL PNP NPN Power Transistor Assortment Kit, 840pcs 24 Types Electronic Component for General Purpose Switching Applications: Amazon.com: Industrial & Scientific