From: Watson 'Atto Parsec' Name
Subject: Re: Unknown component... PIN photodiode?
X-Newsreader: MicroPlanet Gravity v2.60
Date: Fri, 11 Oct 2002 07:55:30 -0700
NNTP-Posting-Date: Fri, 11 Oct 2002 07:51:17 PDT
Organization: InReach Internet
In article <email@example.com>,
firstname.lastname@example.org talked about...
> Hello all,
> I really like this component, and want to find a source for more of
> them (or even better ones). I am assuming it is a PIN photodiode,
> though I don't know for sure because I have never owned one before
> this. It has two flattened leads, and measures 1/4" wide by 1/8" thick
> by 5/16" tall. It is all black, has one glossy face and one dull face.
> The dull face has a small 3/16" round raised surface, on which the
> numbers "302" and "33" are stamped. Seen from this dull face, the
> right upper corner is cropped, assumingly meant to indicate the
> positive terminal. The black casing is apparantly an infrared filter
> type of plastic, since it clearly performs much better in the infrared
> than it does other colors of light.
> Here's a picture of the component mounted in the breadboarded
> lightbeam demodulator, clearly showing the backside with the numbers:
> Anyone recognize it and know of the ballpark cost of these components
> and a good place to buy more of them?
> - NR
Check this out: http://www.nteinc.com/specs/3000to3099/pdf/nte3033.pdf
The package looks different, but the specs might be similar. A Q. for the
OP, does the PPD sense light on the numbered side, or on the side opposite
I have a question for those who may have dabbled in this before. I tried
using a LED as a sensor, and found that it generated a few tenths of a volt
when exposed to light, like the photodiode above. I used it in a circuit
that senses the voltage the LED generates across a 10 meg resistor, but as
one would expect, the current is miniscule because the junction area is so
small, hence the 10 meg res. Is it better to use the LED in the
photoconductive mode rather than as a photovoltaic generator?
Xposted to s.e.d., s.e.m
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you put NOSPAM in the
Subject: line. alondra101 hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html