Features: _x000D_Transistor is a basic semiconductor device that control current, which can also be used as a non-contact switch. _x000D_There are total 200 pieces of transistors in 10 values in this set which will meet you basic needs. _x000D_All transistors are well packed and assorted in a transparent box for convenient storage. _x000D_Each transistors is clear marked so you can easily identify which type of transistors you need. _x000D_This is a great assortment of transistors for electronic professionals or enthusiasts._x000D__x000D__x000D__x000D_Specifications: _x000D_Material: Silicon_x000D__x000D_Type: _x000D_BC337, BC327, 2N2222, 2N2907, 2N3904, _x000D_2N3906, S8050, S8550, A1015, C1815 _x000D_Quantity: 20pcs each type _x000D__x000D__x000D_Package Includes: _x000D_1 Box x Transistors _x000D__x000D__x000D_Note: Transistors are sorted manually, so there might be small mistakes on type and quantity. Thanks for your understanding. 1Transistor is a basic semiconductor device that control current, which can also be used as a non-contact switch 2There are total 200 pieces of transistors in 10 values in this set which will meet you basic needs 3All transistors are well packed and assorted in a transparent box for convenient storage 4Each transistors is clear marked so you can easily identify which type of transistors you need 5This is a great assortment of transistors for electronic professionals or enthusiasts