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Re: transistor parametric data---where?

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>> przemek klosowski wrote: >>> I thought it would be easy to find a compilation of transistor data >>> listing the basic parameters (VCEmax, hFE, VCEsat, Pmax, fmax, ICEmax, >>> etc), for at least the basic types (2Nxxxx, BCxxx). >> .......... >> Have you tried: >> >>
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>> >Yes, I do realize that one can find the individual datasheets. I was >looking for a compilation of the data, for instance to sort it by the >saturation voltage and/or by speed, to find the best switchers. It was >a surprise to me---are not the standard type designators (e.g. 2N2222) >supposed to refer to 'identical' parameters? and if so, I am somehow >surprised that there isn't a list somewhere, just like there's a list >of 74xxxx TTL chips. > >Individual manufacturers (IR for instance) have parametric searches for >their own product line that may even show rough pricing, but you just >have to know which ones are worth searching in. This newsgroup quite >often carries dialogs like > "I am using the xyz part, but it doesn't do abc" > "Try the uvw part, it has a higher fghi and is cheaper" >which is great if someone has the answer, but is so... manual.. and >even then the well-informed people are sometimes suprprised by new parts. > >I could almost see a giant datasheet-scraping script that collects >this information continuously into a large table on the web, but then I >think of all the crazy formatting variations of datasheet tables and I >snap out of it.

You might try here for the basic parametric data.

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This is almost as much use as the T.D.Towers publication.

I'm trying to turn it into a spreadsheet, for easier use, but the blank lines are playing hell with function - not to mention the line count and last few descriptive fields.

RL

Reply to
legg
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I've been an Excel user for many years, yet I'm still a "stumbler/bumbler" :-(

A mail pamphlet crossed my desk today offering a 2-day seminar in Excel, in nearby Tempe, for $128. I think I'll do it.

...Jim Thompson

--
| James E.Thompson, P.E.                           |    mens     |
| Analog Innovations, Inc.                         |     et      |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems  |    manus    |
| Phoenix, Arizona  85048    Skype: "skypeanalog"  |             |
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  |
| E-mail Icon at http://www.analog-innovations.com |    1962     |
             
         America: Land of the Free, Because of the Brave
Reply to
Jim Thompson

I'm trying microsoft.public.excel on the net.

RL

Reply to
legg

I seem to do better in a regimented classroom environment. If I try studying by reading a book or tutorial I get distracted by something or other... by the time I get back to it I've forgotten where I was and have to start over.

That's why I once took a community college course in Pascal, but didn't bother to take the final... didn't need the credits, just the information.

Got a hilarious letter from the dean fretting over my loss of "academic future". Since the dean's name was "Shirley" I had some good fun sending her a letter, "Surely Shirley..." ;-) Pointing out, had she read my folder, she would have seen I already had my Masters.

...Jim Thompson

--
| James E.Thompson, P.E.                           |    mens     |
| Analog Innovations, Inc.                         |     et      |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems  |    manus    |
| Phoenix, Arizona  85048    Skype: "skypeanalog"  |             |
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  |
| E-mail Icon at http://www.analog-innovations.com |    1962     |
             
         America: Land of the Free, Because of the Brave
Reply to
Jim Thompson

Do they cover user-defined functions? I needed to write my own (binary fixed-point arithmetic) a while back, but couldn't find information in a form I could quickly use. I'd still like to do it.

--
Keith
Reply to
krw

I've looked at these tables more closely, and they seem to correspond to the Towers format, though some parameter columns are missing ( book bias for the hfe listed having once been one of the most useful).

Some isolated artifacts from the OCR are visible as single or grouped digit typos, mislocated spaces, dust fleck decimal places or straight garbage, but a good job on the main. Tehno Magazin appears to be hosted in Poland, the Ukraine or Russia, so the small typo count is even more impressive, given the language barrier. Some of the new numbers may be approximations to soviet cyrilics. Good idea.

Going to have to resurrect the mfr, use and package lead-out tables, for this new info to make any sense.

The first edition Towers boasted >20000 lines. This sheet more than triples that count, with 20000 lines barely covering jedec jaida and proelectron registrations.

As most of the numbers are now effectively obsolete, the OBS designation has generally been dropped from the mfr source line and replaced by the original oem identifier. Useful for historians, anyways.

RL

Reply to
legg

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