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I'm designing a PCB where I have to locate two super flux LEDs like this one.

photo of LED from Bivar datasheet


mechanical dimensions from Bivar datasheet


The problem is that it has to be elevated, approximately, 8 mm from the PCB. What is the best way to do this? What type of socket, spacers, standoff... is usually used in this case?

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  • \$\begingroup\$ Why do you need to elevate them 8mm? The pins already have standoffs built in to them that presumably put them at the manufacturers recommended height from the PCB. \$\endgroup\$ – crj11 May 21 '18 at 10:45
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    \$\begingroup\$ Considering the pin length + device height sum to 7.4mm I'd say you're out of luck unless you're willing to consider either: a sub-board, or a different LED. With regular LEDs I'd have suggested cutting an 8mm length of heatshrink tubing and slipping it over a pin. \$\endgroup\$ – Brian Drummond May 21 '18 at 10:54
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    \$\begingroup\$ Could you use pin sockets to elevate the part? \$\endgroup\$ – AlmostDone May 21 '18 at 11:55
  • \$\begingroup\$ The 0298xxxx part within this product line is an example of what I was referring to in previous comment. mill-max.com/assets/pdfs/metric/174M.pdf \$\endgroup\$ – AlmostDone May 21 '18 at 12:12
  • \$\begingroup\$ SIL socket strip might be easy. You don't have to connect anything to the middle position, but it might be a good idea to solder it anyway so it can't rattle. \$\endgroup\$ – Andrew Morton May 21 '18 at 14:58
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If I were doing this I would either look for a light pipe, or just make a small through-hole pcb with footprints for the led, and for some long 0.1 pitch headers that would go down to the main PCB.

You can get a few hundred small custom PCBs for next to nothing these days.

The only downside I can see for this solution is that it will probably require a jig during soldering to get the right stand-off height.

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Solder the LED to a 0.062" PCB
0.062" + 0.25" ≈ 8 mm
Use a 3 pin 0.25" high header on the bottom side.

enter image description here



If there will be significant vibration add two 0.25" hex standoffs.

enter image description here

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