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 20 values in this set which will meet you basic need. This set is organized by size in transparent storage bag for quick access and protection. These transistors have high dielectric strength, fast switching speed, good current performance. This is a great assortment of transistors for electronic professionals or enthusiasts. Specifications: Material: Silicon Package: TO-92 Weight: Approx. 41g Type & Quantity S9012H 10pcs S9013H 10pcs S9014C 10pcs S9015C 10pcs S9018H 10pcs S8050D 10pcs S8550D 10pcs A1015 10pcs C1815 10pcs A42 10pcs A92 10pcs 2N5401 10pcs 2N5551 10pcs A733 10pcs C945 10pcs 2N3904 10pcs 2N3906 10pcs SS8050D(1.5A) 10pcs SS8550D(1.5A) 10pcs TL431 10pcs Package Includes: 200 x Transistors 1、Transistors are basic semiconductor device that control current, which can also be used as a non-contact switch 2、There are total 200 pieces of transistors in 20 values in this set which will meet you basic need 3、This set is organized by size in transparent storage bag for quick access and protection 4、These transistors have high dielectric strength, fast switching speed, good current performance 5、This is a great assortment of transistors for electronic professionals or enthusiasts