I'm looking for a SMD LED that I can use as a power/activity LED.
This needs to be PCB mounted but visible through a hole in the case.
Are there any stock solutions that peeps use here?3
-- Mike Perkins Video Solutions Ltd www.videosolutions.ltd.uk
John Larkin posted a good one here about a week ago. But I think his was meant to act as a backlight to a panel something or other. There are plenty of through-hole right-angle LEDs.
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Thanks,
- Win
tirsdag den 12. november 2019 kl. 01.39.01 UTC+1 skrev Mike Perkins:
led light pipe, it has a enough wiggle to fit in a hole in a panel and on the pcb is just a regular smd led
if a bit of hand soldering isn't out of the question "edge launch" mounting a regular LED through hole LED will work
This Osram family is really nice.
Beautiful colors, especially the blue and orange. We usually shoot the light onto the back of a label that has a frosty window, but it's OK firing into a bare hole in an aluminum panel.
Two on upper right.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
This pipe picks up the light from some surface-mount 1206-type LEDs:
-- John Larkin Highland Technology, Inc lunatic fringe electronics
I've used something like this for 0603 LEDs:
These look useful, too:
But why does a light pipe, a few milligrams of plastic, cost 5 or 10 time the cost of an LED?
-- John Larkin Highland Technology, Inc lunatic fringe electronics
I have used lots of types like these, behind holes in a case:
-- Arie
Mike Perkins wrote in news:qqcuuv$tuq$ snipped-for-privacy@news2.open- news-network.org:
Form factor?
There are teenie tiny SMD LEDs out there and there are fairly large jobs (0603) and bigger.
They certainly look very interesting but don't look suitable for placement on a panelled PCB.
Many thanks, I will bear them in mind for future projects.
-- Mike Perkins Video Solutions Ltd www.videosolutions.ltd.uk
Cost is an issue and is another component on the BOM. There is no real problem in placing this LED close to the edge of the PCB.
-- Mike Perkins Video Solutions Ltd www.videosolutions.ltd.uk
Why is that?
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Thanks,
- Win
Because the LED is less than a milligram of plastic?
Because a pick and place machine would generally place from above, and these look as if they need to be placed from the side.
-- Mike Perkins Video Solutions Ltd www.videosolutions.ltd.uk
No, ordinary pick-and-place.
Just set them back from the edge of the board, 50 mils or so, so they don't hit the panel. Not too far or the light will spread out.
-- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
from the side? they place just like any other SMD component, the top "ledge" is for the PnP machine suction cup
-- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
Thanks, it wasn't initially obvious from the photo.
-- Mike Perkins Video Solutions Ltd www.videosolutions.ltd.uk
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