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Multifunction Meter DIY kit, ACEIRMC Mega 328 Graphic Transistor Tester, NPN PNP Diodes Triode Capacitor ESR SCR MOSFET Resistor Inductance LCD Display Checker with case: Amazon.com: Industrial & Scientific
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50pcs/set To-92 Transistor Tl431a Tl431 2n2222 2n3904 Bc327 Bc337 S8550 Regulator Tube Triode Diy Electronic Transistors Pack - Transistors - AliExpress
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