Transistors are 3 legged active semiconductor devices.
Transistor Part Number Standards
If you are lucky enough, the transistors you have will follow a naming standard. This allows you two identify (or partially identify) a transistor from bits of it’s part number.
- Silicon Controlled Rectifiers (SCRs)
- Shift Registers
- Peltiers (Thermoelectric Cooler)
- Electropermanent Magnets (EPMs)