🔍 Key Concepts

• Recognize the common package shapes of semiconductor devices (diode, transistor, bridge rectifier, IC). • An integrated circuit (IC) usually contains many components inside one package and typically has many external pins. • Compare the number of leads and the overall body shape of each numbered device in the illustration.

💭 Think About

• Which numbered device has the greatest number of terminals and looks like it could connect to many different points in a circuit? • Which devices look more like single‑function components such as diodes, transistors, or rectifiers rather than a complex multi‑function chip? • How are ICs typically mounted on circuit boards, and which pictured device matches that mounting style?

✅ Before You Answer

• Identify which option shows a dual in‑line package (DIP) or similar multi‑pin package. • Confirm that the chosen device has far more leads than the others in the picture. • Make sure you are not confusing a power transistor or rectifier (few heavy leads, metal tab or stud) with an IC (many thin pins in rows).