Transistor pin finder Type a part number to see which leg is which
Always check the part number printed on the body. The same number from different makers can have a different pin order; when in doubt, test with a multimeter in diode mode or ask us on WhatsApp.
About MOSFETs, JFETs & IGBTs
Field effect transistors for switching motors, LED strips and power supplies: IRFZ44N, IRF540N, IRF520 and P55NF06 N-channel MOSFETs, IRLZ44N logic level MOSFET for Arduino, IRF9540 P-channel, 2N7000 and BS170 small signal MOSFETs, BF245 and BFW10 JFETs and the 15N120 IGBT.

















