Made of silicon material Transistor is an electronic component that is used in most electronic circuits in both low and high voltage. It is a fundamental component of electronic devices and logic circuits. Also used as a non-contact switch The kit consists of 10 values, 6pcs in each value, 60pcs in total. Each transistor is clearly marked so that you can easily identify the transistor value you need. Transistor is a basic semiconductor device that controls current, which can also be used as a non-contact switch. It is very important in electronic circuit. This transistor assortment kit provides 200pcs in total of 10 different values to satisfy your different needs. These are the ideal components for electronic repair or electronic DIY project. Note: The transistors are sorted manually, so there may be small errors on the value and quantity. Thanks for your understanding. Specifications: -Materials: GE-N-FET -Conduction type: depletion -Uses: A/Broadband amplification -Type and quantity: L7805 6PCS L7806 6PCS L7809 6PCS L7812 6PCS L7815 6PCS L7824 6PCS L7905 6PCS L7912 6PCS L7915 6PCS LM317 6PCS Package Contents: 1 Box of 60pcs triode transistors