----- Original Message -----
> From: Dick Hollenbeck <d...@softplc.com>
> To: KiCad Developers <kicad-developers@lists.launchpad.net>
> Cc:
> Sent: Tuesday, June 11, 2013 6:37 AM
> Subject: [Kicad-developers] SMT LEDs on board back side,
but showing through a hole
>
>
> http://electronicdesign.com/boards/smt-leds-emit-light-through-holes
>
> Is there another way to do this with SMT without using this special product?
>
> Do SMT LEDS light on their backside? If show, could a person not use a
> normal
> SMT LED for
> this and simply put a NPTH in the middle of the two pads?
>
> Thanks,
>
> Dick
>
SMT LEDs generally do not emit light behind them; there is usually a reflector
of some sort (remember the rather obvious reflectors in the large clear
encapulated thru-hole LEDs). For a better picture; have a look at some
datasheets from Osram (top-emitting and bottom-emitting LEDs; there are images
revealing some details of the encapsulation):
http://catalog.osram-os.com/catalogue/catalogue.do?favOid=000000000002e87f00030023&act=showBookmark
http://catalog.osram-os.com/catalogue/catalogue.do?favOid=000000000001f73300070023&act=showBookmark
- Cirilo
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