R
Resistor
A resistive component with its value and purpose documented separately.
Schematic
Symbols · PD
Photodiode
A photodiode is a light-sensitive semiconductor device used in a documented sensing circuit.
Schematic · PD
What it represents
A photodiode is a light-sensitive semiconductor device used in a documented sensing circuit. Its electrical connections and optical input are separate aspects of the representation.
How to read it
- Identify whether the associated circuit biases the diode or measures its generated response.
- The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation.
Information to show or reference
- Show polarity and bias circuit
- Reference optical input
- State selected device type
A distinction that matters
A photodiode senses light; an LED emits light.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
AutoCAD Electrical: Semiconductor components
Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic.
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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