SESK: Stuff Everyone Should Know · sesk.info/ham-led-schematic-symbol
Which component uses a diode symbol with arrows pointing outward?
Light emitting diode.
- Light emitting diode ✔
- Resistor
- Inductor
Why: A diode symbol with arrows pointing outward is a light emitting diode (LED). On the exam, it is component 8 in Figure T-2.
Huh, didn't know that: Arrows point inward on a light-sensitive photodiode symbol.
Why does the LED symbol have arrows? It wants everyone to see it glow.
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References
Answer: Light emitting diode. A diode symbol with arrows pointing outward is a light emitting diode (LED). On the exam, it is component 8 in Figure T-2.
- NCVEC 2026-2030 Technician Question Pool, T6C07 ncvec.org/downloads/2026-2030%20Technician%20Pool%20and%20Syllabus%20Public%20Release%20Feb%2019%202026.pdf
D. Light emitting diode
Checked 2026-10-09.
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