LAMP LED
LED indicator lamp
An LED indicator assembly provides a documented visual signal using a semiconductor light source.
Schematic
Symbols · LED
Light-emitting diode
A semiconductor diode that emits light when operated with the appropriate forward current.
Schematic · LED
What it represents
A semiconductor diode that emits light when operated with the appropriate forward current.
On a schematic, identify anode/cathode polarity and the current-limiting circuit and trace the optical indication or emitter function. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.
A bare LED needs its external operating circuit; the existing LED indicator-lamp record describes an assembled indicating device.
Terminal letters describe electrical roles, not package pin numbers. Check the selected public datasheet for the actual pin assignment, polarity and any internally connected terminals before completing the drawing.
How to read it
- Identify anode/cathode polarity and the current-limiting circuit.
- Trace the optical indication or emitter function.
Information to show or reference
- Label anode/cathode polarity and the current-limiting circuit.
- Cross-reference the optical indication or emitter function.
- Add the selected device or circuit documentation revision, power/reference connections and project signal convention.
A distinction that matters
A bare LED needs its external operating circuit; the existing LED indicator-lamp record describes an assembled indicating device.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Visible LED component families
Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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