IR phototransistor

I've found the ideal, but still unobtainium phototransistor, Vishay's
VEMT4700F.
Features surface mount, wide angle (120° half sensitivity), IR filter,
and base access. All this is required.

Unfortunately unavailable for now.

Any other reference with all those features? I can trade surface mount
for availability for prototyping :-)


--
Thanks,
Fred.

Phil Hobbs a écrit :
> Fred Bartoli wrote:
>> I've found the ideal, but still unobtainium phototransistor, Vishay's
>> VEMT4700F.
>> Features surface mount, wide angle (120° half sensitivity), IR filter,
>> and base access. All this is required.
>>
>> Unfortunately unavailable for now.
>>
>> Any other reference with all those features? I can trade surface mount
>> for availability for prototyping :-)
>>
>>
>
> "Ideal phototransistor" isn't just unobtainium, it's antinomium.
>
> How about a nice BPV22NF and an op amp?
>
> Cheers
>
> Phil Hobbs
>

Thanks, will go with that one. Don't know why I did focus only on 2
junctions...
Sometimes we feel old...


--
Thanks,
Fred.

On Fri, 11 Feb 2011 13:44:14 -0500, Phil Hobbs wrote:
....
> "Ideal phototransistor" isn't just unobtainium, it's antinomium.

Antinomium, nice word, I had to Google it:

from Secret Symbols of the Rosicrucians (Second Book):
But when Thomas Aquinas calleth it Antinomium, he doth so because of its
black ...
Antinomium is opposed to all metals and burneth them all except the
gold. ...

Also used in vitamin supplement descriptions, but not in dictionaries
yet. Looks like you are the first to use it with the meaning of "name of
something impossible" or perhaps "self contradicting nomenclature" - but
I think it might catch on. Clearly a far better word than the plebeian
and vaguely insulting "oxymoron", the use of which should be deprecated
now that we have a better word :-). I am emailing it to a group of
friends as the word of the day, I think they will like it better than the
last one I sent, which was reocentric. (They are a psychocentric bunch.)

Glen

Robert Baer wrote:
> Phil Hobbs wrote:
....
>> contradiction in terms like a four-sided triangle. Just a jocular way
>> of saying that there's no such thing as a good phototransistor.
>>
>> (Cue Jan to remind me how ignorant I am about the subject.)
>>
> Well....wish me some luck; i am (in spare time) working on a 4-sided
> triangle.
> First crude "cut" is interesting and shows some possible clues.
> Be advised eye ayint meekanocull genrus.

Here's a project for you:
http://en.wikipedia.org/wiki/Blivet

Have Fun!
Rich

On Sat, 12 Feb 2011 13:27:28 -0800, (E-Mail Removed) (Dave Platt)
wrote:

>
>
>[Spider described the business of being a writer as "toiling in the
> antinomy mines", and that writers were thereby subject to a ghastly
> occupational disease known as "black brain". A better man with puns
> and plays on words, I have yet to meet.]
>
>--
>Dave Platt <(E-Mail Removed)> AE6EO
>Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior
> I do _not_ wish to receive unsolicited commercial email, and I will
> boycott any company which has the gall to send me such ads!

Piers Anthony (with fan club as needed) can probably go a few rounds with
Spider.