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transistor parametric data---where?

  • Thread starter przemek klosowski
  • Start date
P

przemek klosowski

Jan 1, 1970
0
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). Of course most of the
google results are zero-information pages from darned component brokers,
but even after filtering those, I couldn't find any complete data. The
best I could do was a list with decent amount of parameters but limited
coverage, on http://sound.westhost.com/trans.htm, and more comprehensive
list with just basic parameters at http://www.qsl.net/yo5ofh/data_sheets/
transist.txt .

Are there other sources that I overlooked? Perhaps one can do parametric
search using publicly available component libraries like LTspice?
 
P

Phil Allison

Jan 1, 1970
0
"przemek klosowski"
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).


** The issue is "compilation" - since the various type numbers are made
by many different makers.

Of course most of the
google results are zero-information pages from darned component brokers,
but even after filtering those, I couldn't find any complete data.


** That is total bollocks.

Data sheets for a huge variety of 2N, BC and 2S numbers are easily found
using Google.

However, if you want a COMPILATION covering all the above numbers in
alpha-numeric order - you will have to buy a book listing such.

I have one ( 7th ed, printed in 1977 ) called the

" SEMICON International Transistor Index "

Unfortunately, it is full of silly errors and typos.




....... Phil
 
A

Alan Peake

Jan 1, 1970
0
przemek said:
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:

http://www.datasheetcatalog.com/

?
Alan
 
P

przemek klosowski

Jan 1, 1970
0
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.
 
L

legg

Jan 1, 1970
0
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). Of course most of the
google results are zero-information pages from darned component brokers,
but even after filtering those, I couldn't find any complete data. The
best I could do was a list with decent amount of parameters but limited
coverage, on http://sound.westhost.com/trans.htm, and more comprehensive
list with just basic parameters at http://www.qsl.net/yo5ofh/data_sheets/
transist.txt .

Are there other sources that I overlooked? Perhaps one can do parametric
search using publicly available component libraries like LTspice?

There used to hard cover publications (not inexpensive) from D.A.T.A.,
IC Master and the popular soft-cover manuals by T.D.Towers. The latter
was published in the UK by Foulsham and was probably cloned in SEAsia
at a later date. These never claimed full coverage or completeness.
Such clones can still be found in SE Asia, will various improvements
and updates, though the use of English in their formatting is
increasingly rare.

D.A.T.A and IC Master (same organization?) maintain commercial
subscription web services.

http://www.icmaster.com/search/HomePageAction.ad

Obviously, any commercial organization releasing their database into
an easily 'mined' format would be putting themselves out of business,
save as a source of 'updates' - an even more extreme variant of the
situation for the early paper publishing situation, considering the
ease of electronic format distribution.

There's no other commercially viable source for non-sales data and the
educational benefits of such a database would be questionable as it
describes artifacts only, in non-useful summary format.

Unless transistors become the object of commercial collectors or
museums, I don't see the situation changing.

RL
 
R

Rich Grise

Jan 1, 1970
0
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). Of course most of the
google results are zero-information pages from darned component brokers,
but even after filtering those, I couldn't find any complete data. The
best I could do was a list with decent amount of parameters but limited
coverage, on http://sound.westhost.com/trans.htm, and more comprehensive
list with just basic parameters at http://www.qsl.net/yo5ofh/data_sheets/
transist.txt .

Are there other sources that I overlooked? Perhaps one can do parametric
search using publicly available component libraries like LTspice?

Have you tried here?
http://www.google.com/search?hl=en&q="transistor+selection+guide"
http://www.google.com/search?hl=en&q="semiconductor+selection+guide"

Good Luck!
Rich
 
J

JosephKK

Jan 1, 1970
0
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.

It is strange, the JAN and JANTX 2N#### series are regulated by JEDEC
you might be able to compile some of what you want from the hundreds
or more of "/" sheets. There is a similar body for Japanese 2SX####
(JIS) series with the same problem. from this i expect that there is
a similar body for the BXX#### series parts with similar constraints.
Moreover read the specifications carefully, there is no real general
guarantee of interchangeability in 2NXXXX, 2SXXXX or BXX### series
parts.
 
L

legg

Jan 1, 1970
0
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've got to realize that the commercial application of the
parametric lists was always in the repair business.

If people aren't repairing their toys any more, manufacturers don't
even publish service information, so the commercial justification
disappears.

Get one US president or some pop-hyped billionair collecting
semiconductors (or beanie babys for that matter) and you can bet
there'd be a catalog along, shortly.

RL
 
L

legg

Jan 1, 1970
0
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.

http://www.tehnomagazin.com/Transistors_data_and_replacement_tables/Bipolar transistors.htm

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
 
L

legg

Jan 1, 1970
0
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.

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

RL
 
L

legg

Jan 1, 1970
0
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.
The newsgroup got it second try. Had to select all data on the
worksheet, then specify the column to sort by separately.

This dumped the blank lines without loosing row consistency.
The 12000 lines of the first worksheet are now closer to 6500.

RL
 
K

krw

Jan 1, 1970
0
I'm trying microsoft.public.excel on the net.

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.
 
L

legg

Jan 1, 1970
0
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.

Wouldn't hurt to ask. Like s.e.d., it's all volunteers, regardless of
the MS site's origins and contributors' qualifications.

No spam to speak of.

RL
 
L

legg

Jan 1, 1970
0
You might try here for the basic parametric data.

http://www.tehnomagazin.com/Transistors_data_and_replacement_tables/Bipolar transistors.htm

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.

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
 
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