Substitute for 2N2222

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hi,
You can get both datasheets from DatasheetArchive :: Free Datasheet Search Engine :: Electronic Components
and compare the specification.

Check the Ic's max rating, 100mA BC148 and 600mA for the 2N2222
 
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The 2N2222 can be replaced without problems by the BC337. The 2N2222 has a TO18A package (similar to TO92, but metal can) and the BC337 has a TO92 package. That one can handle up to 800mA.
 
The BC148 was used 44 years ago. I have some. It has discontinued about 34 years ago.
The latest one is the BC548 in a TO-92 case.
The 2N3904 is the same but its collector and emitter are reversed.
Use a 2N4401 if you want the same high output current of an old 2N2222.
 
Im a big fan of the 2N4401!

Also, just incase your ever wondering, the 2N4403 is a good pnp solution with similar specs
 
You may use 2N3904
Click to expand...
In the OP's circuit this is true because it only needs to pass 60 mA. However the 2N3904 is not a universal replacement for 2N2222 because of a lower current rating.
 
If you need to drive lots of current, use a ZTX649, but I would not reccomend it as it is very expensive.
 
mneary said:
In the OP's circuit this is true because it only needs to pass 60 mA. However the 2N3904 is not a universal replacement for 2N2222 because of a lower current rating.
Click to expand...

It also has a slightly lower GBWP but this isn't important here.
 
I wonder where you live? If you cannot find 2N series there then you never cannot find a BC148 series out there.

The BC148 is very old as Audio mentioned but 2N series is commonly available.
 
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Gayan Soyza said:
I wonder where you live? If you cannot find 2N series there then you never cannot find a BC148 series out there.

The BC148 is very old as Audio mentioned but 2N series is commonly available.
Click to expand...

They may be commonly available where you are, but BC series transistors are commonly available in Europe, which is where they come from - far easier than non-European 2N series.
 
Nigel Goodwin said:
They may be commonly available where you are, but BC series transistors are commonly available in Europe, which is where they come from - far easier than non-European 2N series.
Click to expand...

BC 148/158 were also manufactured in India and now a days, we get BC547/BC557 and BC548/BC558- in local make as well as Philips, in TO92 case.
the 2N2222 and likes are also made In India and from Taiwan.
Industrial usage, they prefer metal can and for commercial, TO92.
 
Nothing to worry where the transistors came from.Job,price & availability is more important.

2N series more common than some BC series (BC148) including OP has "seen many circuits using the 2N2222 transistor"
 
Torben said:
That's almost like saying "That's not a dog, that's a German Shepherd". Most opto-isolators come in an IC package.


Torben
Click to expand...

hmmm... i didn't realise that's what was meant. thanx for updating me.

now i'll remember a german shepherd's a dog
 
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