Features:_x000D_ _x000D_ Transistor's function is to amplify the weak signal into an electrical signal with a large amplitude value, and also as a non-contact switch. _x000D_ The set includes 15 kinds of Transistor to meet your different needs. _x000D_ All of these transistor are integrated in a box,convenient to access and storage. _x000D_ High durability and stability for better using performance. _x000D_ Transistor is one of the basic components of semiconductors, with current amplification, is the core component of electronic circuits. _x000D_ _x000D_ Specification:_x000D_ Type:Transistor_x000D_ _x000D_ Package List:_x000D_ 40*2N2222 Transistor _x000D_ 40*2N3904 Transistor_x000D_ 40*2N3906 Transistor_x000D_ 40*2N5401 Transistor_x000D_ 40*2N5551 Transistor_x000D_ 40*A1015 Transistor_x000D_ 40*C1815 Transistor_x000D_ 40*C945 Transistor_x000D_ 40*S8050 Transistor_x000D_ 40*S8550 Transistor_x000D_ 40*S9012 Transistor_x000D_ 40*S9013 Transistor_x000D_ 40*S9014 Transistor_x000D_ 40*S9015 Transistor_x000D_ 40*S9018 Transistor