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DIYstompboxes.com  |  DIY Stompboxes  |  Building your own stompbox  |  Transistor Equivalent 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: Transistor Equivalent  (Read 15311 times)
Davide
Posts: 110


Transistor Equivalent
« on: May 06, 2004, 11:57:08 AM »

Hi ! i've seen in many schematics it's often used the 2N5088 NPN transistor.
Here it's terrible hard to find.. i've heard BC383, BC549 , BC550 etc can be considered good workalike.. is it true ? Has someone tried'em ?
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Gringo
Posts: 622

Pablo DL


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Transistor Equivalent
« Reply #1 on: May 06, 2004, 12:16:11 PM »

Yeah, you can sub 5088's with bc549C's all day.
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Cut it large, and smash it into place with a hammer.
http://gringo.webhop.net
Davide
Posts: 110


Transistor Equivalent
« Reply #2 on: May 06, 2004, 02:03:30 PM »

Gracias Gringo Smiley !
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Davide
Posts: 110


Transistor Equivalent
« Reply #3 on: May 08, 2004, 05:59:57 PM »

Another good 2N5088 equivalent.. ?
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Gringo
Posts: 622

Pablo DL


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Transistor Equivalent
« Reply #4 on: May 08, 2004, 06:16:49 PM »

You can try any npn with hfe over 500. BC547/548/549/550 from the C series shoud do the trick, but only the 550 has the same noise figure of the 5088. Another sub is the BC169, you can even try a bc108/109C. Other than that, you can go the nte way, but those parts are expensive and with more *random* specs. I´m not familiar with 2SBxxxx transistors, but you should find some equivalent to the ´88.

Saluti dall'Argentina Wink

Edit: The BC237/238/239 series is also usable.

From the faq: "From R.G.Keen:

2N5089 will work in most instances. Also useful are 2N5210, 2N4401, BC549."
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Cut it large, and smash it into place with a hammer.
http://gringo.webhop.net
Davide
Posts: 110


Transistor Equivalent
« Reply #5 on: May 09, 2004, 04:29:25 AM »

I asked it because i order transistors in a website... all transistors are in 1-5 pieces per packet... but BC549 minimum number is.. 2000 :shock: ...
i'm not going to spend 50€ to buy a Kg of transistors  Cheesy  !

Thank you again !!!


Saluti dall'Italia  :wink:
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Davide
Posts: 110


Transistor Equivalent
« Reply #6 on: May 12, 2004, 04:14:00 PM »

Another equivalents question Smiley   :

i'm going to build Dod Fx-86...  there's a  K30A transistor (a mosfet i think..) that i'm not able to find... some alternatives Smiley ?

Thank you !!
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Gringo
Posts: 622

Pablo DL


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Transistor Equivalent
« Reply #7 on: May 12, 2004, 07:20:34 PM »

If it is a 2sk30, it's a fet, and you can sub it with almost any common fet. Check out the faq, but a few that come to mind are mpf102, bf245a, 2n5457/58, j201, etc.
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Cut it large, and smash it into place with a hammer.
http://gringo.webhop.net
Davide
Posts: 110


Transistor Equivalent
« Reply #8 on: May 13, 2004, 03:15:15 AM »

Quote
R.G. wrote : The K30A is obviously a 2SK30A JFET


 Tongue

Thank you Again !
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Torchy
Posts: 1148


Transistor Equivalent
« Reply #9 on: May 13, 2004, 11:02:06 AM »

Data sheet ...
http://www.datasheetarchive.com/cgi-bin/q.php?pi=68059

or

http://www.americanmicrosemi.com/products/specs/2SK30A.phtml
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Zero the hero
Posts: 583

Alessandro Petrini, Milan (Italy)


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Transistor Equivalent
« Reply #10 on: May 14, 2004, 03:04:39 AM »

BC264 works well as 2SK30A substitute. Check for different pin-out.
I used this one in many projects, with no problems.
Un'altro italiano in questo forum?
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Davide
Posts: 110


Transistor Equivalent
« Reply #11 on: May 14, 2004, 06:06:19 AM »

Thank you Smiley I'll follow the suggestion Wink

(ebbene sì Tongue)
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Davide
Posts: 110


Transistor Equivalent
« Reply #12 on: May 14, 2004, 06:13:47 AM »

mmm some problems findin' BC264 .. is BF245C a good equivalent ?
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