Question
How is the cathode lead of a semiconductor diode often marked on the package?
Answer Options
- A) With the word “cathode”
- B) With a stripe
- C) With the letter C
- D) With the letter K
Correct Answer: B
Explanation
In an axial-leaded semiconductor diode, the two electrodes are the anode (positive) and the cathode (negative) (T6B09). Current flows from anode to cathode. The cathode is the end that the current exits and is typically marked on the cylindrical package with a stripe or a band painted around the body of the diode.
This simple marking is essential for ensuring the diode is installed with the correct polarity, as installing it backward will block the intended current flow and prevent the circuit from functioning.
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