Features: _x000D_ Transistors are 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_ There is a label on box so you can easily identify which type of transistor you need. _x000D_ This is a great assortment of transistors for electronic professionals or enthusiasts._x000D_ _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Material: Silicon _x000D_ Package: TO-92 _x000D_ Application: Amplification _x000D_ Type and Qty: _x000D_ BC327 _x000D_ 20pcs BC337 _x000D_ 20pcs BC517 _x000D_ 20pcs BC547 _x000D_ 20pcs BC548 _x000D_ 20pcs _x000D_ BC549 _x000D_ 20pcs BC550 _x000D_ 20pcs BC556 _x000D_ 20pcs BC557 _x000D_ 20pcs BC558 _x000D_ 20pcs _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. 1Transistors are 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 4There is a label on box so you can easily identify which type of transistor you need 5This is a great assortment of transistors for electronic professionals or enthusiasts