Transistor geeks roll call.

[Kipper4]

You know those Transistor pinouts

E B C   ect

Q. Are there names for those pinout?

[EBK]

You mean, what do the letters stand for?
Emitter
Base
Collector


For FETs:
Gate
Source
Drain

[duck_arse]

TO, as in TO18, like? I allays fort they meant transistor outline.

[Kipper4]

Your up late or early Duck.
And TO..  wah mean?

I was thinking maybe a eastern or western or european ?
I was thinking maybe they were made for certain markets.

More geekdom please.

[Kipper4]

Welcome to the party....

[Phoenix]

TO does indeed stand for transistor outline, and is part of the JEDEC standard.

As to the pinout orders, that's based on the standard used.
2S transistors are Japanese EIAJ standard, BCE.
2N is American JEDEC standard, EBC.
BC is (western) European Pro Electron/EECA standard, CBE.

[Kipper4]

There we go.
Thanks.

Anymore geeky transistor story's?

[anotherjim]

Not sure they're all that standard.
My trusty old engineers pocketbook has a x-reference chart with pin diagrams, there's TO92a, b... & so on.
There are a few charts around, not sure how helpful/trustworthy compared to actually looking at the specific datasheet.

And this example is one of the naughty ones showing looking at the top of the case with the pins away from us. A 2N3904 would be TO92h. Now, what "h" is in this case is pretty useless info without a corresponding x-ref of part numbers. Worse, "h" appears to be whatever letter whoever designed the chart decided on. I don't think it's according to any standard.
This looks a little more trustworthy.

You can see the 2N3904 would now be a TO92b, but you won't find it called anything other than plain "TO92" on the datasheet.


I always check with DMM diode test until familiar and can remember. You know the base-emitter has a slightly higher resistance/volt drop?

[nocentelli]

Any trannies notorious for occurring as cbe and also ebc? I seem to recall bc183 was a problem for me once but can't be sure.

[slashandburn]

Any trannies notorious for occurring as cbe and also ebc? I seem to recall bc183 was a problem for me once but can't be sure.

This sounds familiar. Sometimes, no matter how hard I study the datasheets and plan (admittedly I don't breadboard enough) I somehow often end up getting the pinout wrong and having to twist two legs to get it to work.

Many a needless sleepless night, when "twisting a leg" would've sorted everything out. So to speak. 

[duck_arse]

I allays fort they meant transistor outline.

who said this?

"L" causes all sorts of havoc. a "BC183L" is a "BC183" but in BCE instead of EBC. BUT - Motorola also had an L variant. at my first job, we had ordered BC548, but were supplied Mot "LBC548". which was 2N pinout instead of BC pinout. they had helpfully marked the package with "Cl B E", but the girls on the line cared not at all for part numbers, they just plugged the parts in like the sample showed them. there was only 100 or so of them soldered.

they had nice legs, gold, but were very ordinary performers [the transistors, never tried the girls]. I got a bag of 50 or so, still have some left.

[Kipper4]

I haven't built a treble booster in a while but I remember I liked the characteristics the BC182.
I probably got crooked when I bought mine. I'm pretty sure they didn't have gold legs though.


http://www.diystompboxes.com/smfforum/index.php?topic=61196.0

2007
I'm off to check the pinout hut hum.

Great resource so far.