Features 200 pieces of transistors in 10 values Control current and act as non-contact switch Conveniently stored in transparent box Easily identifiable labels Ideal for professionals or enthusiasts Features:Transistors are basic semiconductor device that control current, which can also be used as a non-contact switch.There are total 200 pieces of transistors in 10 values in this set which will meet you basic needs.All transistors are well packed and assorted in a transparent box for convenient storage.There is a label on box so you can easily identify which type of transistor you need.This is a great assortment of transistors for electronic professionals or enthusiasts. Specifications:Material:  SiliconPackage: TO-92Application: AmplificationType and Qty:BC32720pcsBC33720pcsBC51720pcsBC54720pcsBC54820pcsBC54920pcsBC55020pcsBC55620pcsBC55720pcsBC55820pcs Package Includes:1 Box x Transistors Note:Transistors are sorted manually, so there might be small mistakes on type and quantity. Thanks for your understanding. Package List