Made of silicone material The transistor is an electronic component used in most electronic circuits, both in low voltage and high voltage. It is a fundamental component in electronic devices and logic circuits. Also used as a contactless switch The box consists of 10 values, 6pcs of each value, a total of 60pcs. Each transistor is clearly marked so you can easily identify the transistor value you need. The transistor is a basic semiconductor device that controls current, which can also be used as a contactless switch. It is very important in the electronic circuit. This transistor assortment kit provides a total of 200 pieces of 10 different values to meet your different needs. These are the ideal components for electronic repair or the electronic DIY project. Note: Transistors are sorted manually, so there may be slight errors in value and quantity. Thank you for your understanding. Specifications: -Material: GE-N-FET -Type of conduction: Depletion -Applications: A/Wideband amplification -Type and quantity: l7805 6pcs l7806 6pcs l7809 6pcs l7812 6pcs l7815 6pcs l7824 6pcs l7905 6pcs l7912 6pcs l7915 6pcs lm317 6pcs Packaging content: 1 × 60pcs transistor triodes