🔍 Key Concepts

• Recognize typical package shapes of LEDs (light-emitting diodes) versus ordinary rectifier diodes and transistors • Recall that most panel-type LEDs have a transparent or colored plastic lens body with two leads • Notice which components are designed for mounting to a circuit board as an indicator light rather than power handling or signal processing

💭 Think About

• Which numbered device looks like it is meant to shine light outward, rather than just conduct current internally? • Compare the body style of each device: which one has a rounded, ‘lamp-like’ plastic encapsulation instead of a metal can or flat package? • Look at the number of leads and their arrangement: which option matches the common 2‑lead indicator LED package?

✅ Before You Answer

• Verify that the chosen device has two leads coming from a small, molded plastic ‘bulb’ or lens • Confirm it does not look like a power rectifier diode (axial lead with a cylindrical body) or a multi‑lead transistor/IC package • Ensure the package is clearly intended as a visual indicator component, not a high‑power stud‑mounted or heat‑sinked device