Need some backlight options

T Chap

I have a PCB where there are a number of holes drilled in it so that LED's can send light through to the other side of the PCB. The bottom of the PCB cannot have anything mounted on it, it mounts flush against a polycarbonate panel with graphics on it, no space. The LED must be on the top, but send light back through the board.

There are no U-Turn light pipes I can find. Rigging LED's to have a bend in the wires is rather jankie. There are LED's that exist that with flat wires called 'yokes' that would work, but no luck finding white in that style.

Any suggestions?

Phil Pilgrim (PhiPi)

Here is a white LED that can be reverse mounted.

-Phil

T Chap

Perfect! Exact right size. I was on digi for a while today already. Many thanks Phil.

T Chap

You got me on the right track with Osram. Here is even a better part for the application, with a wider viewing angle.



search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=475-1148-1-ND

Phil Pilgrim (PhiPi)

Um ... that's a red LED, not white.

-Phil

T Chap

True.

In white:

search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=475-2700-2-ND

Phil Pilgrim (PhiPi)

Ah, yes. I did come across that one in my search. Be sure to note the brightness ratings between the two: 980 vs. 135 mcd.

-Phil

T Chap

Thanks Phil, a big help with that info.