Does anyone know of a surface-mount component that could work as an Infrared Radiation barrier?

I have a PCB design that uses an infrared proximity detector in the form of an IR LED and an IR transistor placed with about 10 mm spacing between them. Now the problem has arisen that I need some sort of physical barrier between them to prevent crosstalk and false proximity detections.
  • Try SMD 0.1″ headers. Pick & Place and wave soldering are compatible, but these need a minimum of 3 pins due to the alternating SMD feet to keep them standing before the solder holds them on.
  • Switch to an transistoror diode pair that already comes with a molded body, unless those don’t exist in SMD.

Read More: LED PCB Assembly

#PCB Design

Oliver Smith

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.
Oliver Smith

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.

What Others Are Asking

What are the black spots in lead-free solder joints on PCB?

I am prototyping a PCB, using Chip Quik’s “SMDSWLF.031, a Sn96.5/ Ag3.0/ Cu0.5 solder with 2.2% no-clean flux. I find that the black spots appears frequently in larger pads on my board. I wonder if it is because I left the soldering iron more time heating the solder and that burnt the flux. What is that black residue? Is that a sign of a bad joint or maybe bad soldering technique?

Why are there teardrops on PCB pads?

I received the PCB design file from supplier. There are some teardrops, which I have seldom seen. Why are there teardrops on the PCB design?

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