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BJT Transistors Assortment Kit - Set of 210 PNP and NPN Assorted Transistors with 250 Assorted Resistors - Bipolar Transistor Pack with 2N3904 2N3906 S8050 2N2907 S8550 2N2222 BC337 C1815 BC327 A1015:
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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
Slim DIN Rail Mount NPN to PNP/PNP to NPN Sensor Logic Signal Converter Module: Amazon.com: Industrial & Scientific
600Pcs 15 Kinds of Values X 40 Pcs NPN PNP Transistor TO-92 Kit Set with Plastic Box: Amazon.com: Industrial & Scientific