2N2222 Transistor Replacement: CTPN 2222 Compatibility Inquiry

Question

Hello. Looking for a replacement for 2N2222 transistor, is CTPN 2222 a replacement?

chisel · Accepted Answer

You can replace, practically the same. Although 2N2222 is generally available.

psiata · Accepted Answer

The 2N2222 transistor is generally available so it makes no sense to look for a replacement for it. even take the first link from the shore: https://sklep.avt.pl/tranzystor-2n2222.html. The TO-18 housing is also available: https://sklep.avt.pl/tranzystor-2n2222a-si-npn-40v-0-8a-0-5w-to18.html. And as for substitutes, once there were catalogs. If a colleague wants to, then I can look at the catalog for replacements for this transistor.

Anonymous · Accepted Answer

2N2222 http://pdf.datasheetcatalog.com/datasheet/philips/2N2222.pdf
It is a switch transistor, it can be replaced with e.g. old ones:
- BSXP65 http://pdf.datasheetcatalog.com/datasheet/CEMI/mXxvuvx.pdf prod. CEMI (the exact equivalent),
- BSXP59-61 http://radio-hobby.org/uploads/datasheet/722/bsxp/bsxp59.pdf if you do not mind the larger case,
- 2N2219 http://www.onsemi.com/pub_link/Collateral/2N2219-D.PDF - also a larger housing,

psiata · Accepted Answer

Maybe it is already a monument, but as you can see it is still available. Here is an example catalog with replacements: http://elportal.pl/pdf/k01/33_06.pdf

MkkGxPompa · Answer

Thank you for the answers and best regards

Bieda z nędzą · Answer

Plain BC338 replaces it perfectly. Humans, 2N2222 is a 60s transistor, most modern low current bjt has better parameters.

Anonymous · Answer

In general - it's not true. In normal use - e.g. low frequency, control in the power supply or as a relay switch, etc. - yes, BC337 etc. will replace it. But 2N2222 is a switch transistor - fast and in this role no BC can replace it. And here the author gave no application, he asks for a full replacement. In simple terms, it can be said that everything good at BJT was "invented" in the 1960s (and in the early 1970s) - including 2N2222, 2N2369, 2N3055, 2N2219, BC, BF, BU ... later only the epiplanary technology (processes) was changed and improved, in the 90s special high-current and high-VFEat high-current transistors such as 2SC5706, etc. were developed. And therefore because nothing better in this category has been produced. Apparently you can't.

psiata · Answer

because nothing better in this category has been produced. [/ quote] Yes, nothing better has been invented so far, but as we all know technology is still moving ahead and after some time improved versions of this transistor will probably come out on the market As for the transistor catalogs themselves, I recommend reading: https://www.elektroda.pl/rtvforum/zamienniki.html https://www.elektroda.pl/rtvforum/viewtopic.php?p=3308186#3308186 So for quickly found in my catalog replacements for 2N2222: BSW61, 2N4014, BSS40, BSS41, BSW64, BSR13 For the sake of accuracy, I will compare 2N2222 and BC337 here to make it clear: 2N2222: Ucb: 50V Ic: 0.8A Ptot: 0.5W hfe:> 100 ft:> 250 MHz BC337: Ubc: 60-75V Ic: 0.5A Ptot: 0.8W hfe: 100-630 ft: 100 MHz As you can see it is not the same

Anonymous · Answer

The colleague didn't tell the most important difference - the switching times. By the way, for BC337, no switching time manufacturer even states, because these are transistors not for this use. Doubtful, because it is already about 50 years old - and the improved version is not visible. Why would anyone do it? - actually improved versions were made - better transistors like BSXP59-61, 2N2369. And 2N2222 is doing well because it's OK in its class, it's a "classic" - known and proven, popular. There are different, better - each to be used as needed. So fast - archaic, not produced for a long time, not found.

psiata · Answer

Maybe now I break the rules and expose myself to these moderators, but I do not agree with the colleague's statement trimmer01. Here are sample links to replacements (with a few exceptions) that I specified in my last post:

http://allegro.pl/tranzystor-bsw61-bsx-61-1a-70v-npn-to39-i5771761698.html
http://www.digikey.pl/products/en?keywords=2N4014-ND&cur=USD
http://inter-chip.pl/bsr13-16831.html

As for switching times:

for 2N2222:

td = 10ns
tr = 25ns
ts = 225ns
tf = 60ns

Anonymous · Answer

Not right, because it's just a discussion. These links prove what I wrote about, because I understand that a colleague sought out and found only three (actually two). And I meant "normal" availability - in a regular store. And they are not in the stores - because this BSR13 is, after all, SMD - how can it be considered a replacement for 2N2222? Let my colleague not insist on these substitutes, because it is a pity here space for such discussions. As I see a colleague has a "urge to discuss" about nothing - because why a colleague gives here the times 2N2222 - so they are given in the datasheet and nobody here questions it. I just wrote about the fact that BC337 is not a switch and for him times no manufacturer gives. Please, let me put a stop to this information about anything - Regulations, point 3.1.11.

Bieda z nędzą · Answer

Which is not true, BC107 or Ruthenian KT603 was used instead of 2N2222; in chamber pots .. BSXP87 went instead of 2N2906 Marek, you wonder me ....

Anonymous · Answer

Yeah, npn instead of pnp? Because the parameters are just right, BSXP87 (replacement 2N914) is better than 2N2904. BC for controlling the relay, or in MW - were suitable. For fast switching - absolutely not, unlike the KT603 - it was quite a decent switch, faster than 2N2222. At that time it was mixed up differently, with a "lack of sealing wax" - like McGiver. But today? Read the catalog notes, because you are heresy ... or check yourself on the table - assemble a 10MHz key on 2N2222 and compare with BC107. Only fast oscilloscope needed.