comp.arch.embedded t1 photodiode with visible response
Anyone know of a photodiode with visible response in a t1 package. These devices with response limited to the infared are readily available but, curiously, not in the visible range.
Hul
t1 photodiode with visible response
Feb 26, 2010
3 Replies
Take a look at the Osram SFH 229. Even though it peaks at about 800nm, there's still a lot of meat on the response curve down in the visible range.
I've had good luck using similar Osram photodiodes and red light to read markings.
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Thanks Jim. I'll look at it and see how it does. The objective is in the blue range, though, and that might be too far away. There is a surface mount device that is similar to the diode you've mentioned.
Hul
Jim Stewart wrote:
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Yup, used that part too. Good luck.
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