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Looking for a photodiode with large surface area

On Tue, 11 Dec 2007 04:27:36 -0800 (PST), styl...@gmail.com wrote:
Hi,

Does anyone know where I can get a photodiode with a relatively large
surface area? Ideally something like this:

http://thequark.free.fr/harpe/photos/20.jpg

[If you look in the top right part of the board you can see a pretty
big photodiode just about the 14pin chip.]

Everything I've looked at so far is tiny. I need it to capture some
fairly diffuse reflections from a modulated laser beam.

(Which is exactly what the diode in the picture is doing)

Dave



On Tue, 11 Dec 2007 08:55:42 -0600, John Fields <...@austininstruments.com> wrote:
On Tue, 11 Dec 2007 04:27:36 -0800 (PST),
styl...@gmail.com wrote:

>Hi,
>
>Does anyone know where I can get a photodiode with a relatively large
>surface area? Ideally something like this:
>
>http://thequark.free.fr/harpe/photos/20.jpg
>
>[If you look in the top right part of the board you can see a pretty
>big photodiode just about the 14pin chip.]
>
>Everything I've looked at so far is tiny. I need it to capture some
>fairly diffuse reflections from a modulated laser beam.
>
>(Which is exactly what the diode in the picture is doing)

---
http://www.google.com/search?sourceid=navclient&ie=UTF-8&rls=GFRC,GFRC:2006-50, GFRC:en&q=large+area+photodiode

--
JF

On Tue, 11 Dec 2007 10:12:04 -0500, John Popelish <...@rica.net> wrote:
styl...@gmail.com wrote:
> Hi,
>
> Does anyone know where I can get a photodiode with a relatively large
> surface area? Ideally something like this:
>
> http://thequark.free.fr/harpe/photos/20.jpg
>
> [If you look in the top right part of the board you can see a pretty
> big photodiode just about the 14pin chip.](snip)

Digikey sells a wide range of photo diodes, including many
larger than that.
That one looks like a PDB-C107, PDB-C113, or PDB-C140
(optimized for photo conductive operation) or PDB-V104,
PDB-V113 (optimized for photo-voltaic operation)
http://dkc1.digikey.com/us/digihome.html
--
Regards,

John Popelish



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