Features: Transistor and diodes are basic semiconductor devices that control or rectify current. There are total 400 transistors and diodes in 24 values in this set which will meet you basic needs. All transistors and diodes are well packed and assorted in a transparent box for convenient storage. Each transistors and diode is clear marked so you can easily identify which type you need. This is a great assortment of transistors and diodes for electronic professionals or enthusiasts. Specifications: Type & QTY: 2N2222 25pcs 2N3904 25pcs 2N3906 25pcs 2N5551 25pcs 2N5401 25pcs A1015 25pcs SS8050 25pcs SS8550 25pcs 1N4001 20pcs 1N4004 20pcs 1N4007 20 pcs 1N5392 20pcs 1N5399 20pcs RL201 15pcs RL207 15pcs 1N5401 5pcs 1N5004 5pcs 1N5408 5pc 1N5819 10pcs SR260 10pcs SR360 5pcs FR104 10pcs FR107 10pcs FR157 10pcs Operating Temperature: -55 to +150 Package Includes: 1 Box x Transistors and Diodes Note:Transistors and diodes are sorted manually, so there might be small mistakes on type and quantity. Thanks for your understanding.