Features: 100% brand new and high quality. Transistors are basic semiconductor device that control current, which can also be used as a non-contact switch. There are total 840 pieces of transistors in this set which will meet you basic needs. All transistors are well packed and assorted in a plastic box for convenient storage. This is a great assortment of transistors for electronic professionals or enthusiasts. Specification: Material: Silicon Application: Amplification Package: TO-92 Type & Quantity: 2N2222 NPN 35PCS 2N3904 NPN 35PCS 2N3906 PNP 35PCS 2N5401 PNP 35PCS 2N5551 NPN 35PCS A1015 PNP 35PCS C1815 NPN 35PCS C945 NPN 35PCS S8050 NPN 35PCS S8550 PNP 35PCS S9012 PNP 35PCS S9013 PNP 35PCS S9014 NPN 35PCS S9015 PNP 35PCS BC327 PNP 35PCS BC337 NPN 35PCS BC517 NPN 35PCS BC547 NPN 35PCS BC548 NPN 35PCS BC549 NPN 35PCS BC550 NPN 35PCS BC556 PNP 35PCS BC557 PNP 35PCS BC558 PNP 35PCS Weight: 267g / 9.4oz (approx.) Package list: 1 box * Transistors