Transistor Radio
Y20K
Electronics Lab
ElectronicsLab
Transistors directory
Эдуард Паньков
Transistor Database
Artemis Engineering
口袋里的电子实验室
Anas Abubakar
Electronic Component Pinouts
Adriano Moutinho
Transistor
i2be1
PROTO-电路模拟器
PROTO
EveryCircuit
MuseMaze
TheCircuitPro
Mantex Studios