EEVblog Electronics Community Forum
Electronics => Repair => Topic started by: Napalm2002 on September 30, 2014, 02:45:47 am
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Hello all
I apologize for asking such an easy question but I am working on an old akai receiver aa-6600 and I need to replace a bunch of 2sc458 transistors. I had read somewhere awhile ago that 2sc2240 was a suitable replacement. So I bought a bunch very cheap and started to replace them. Then I had printed out a data sheet and I saw that the specs are quite different. Now I am far from an EE so if some of you guys could tell me if you thinks that the 2sc2240 is a close enough replacement or do I need to buy another part no.
Thanks
Mike M
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At a very good guess, absolutely any crap will work. 2SC945, 2SC1815, PN2222...
2SC2240, specifically the GR grade will be a closer fit, but yeah, I doubt it matters at all.
Tim
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Someone else will probably answer your question better than this but I wanted to throw this site out there for you: http://alltransistors.com/ (http://alltransistors.com/)
It helps to narrow down replacements and substitutions but I have to admit that I've only used it a couple of times. It did work well for those times though.
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I would Google it and get the datasheets then compare.
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I did do that I just do t know how important the specs are and don't know what is ok and what might be too much.
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At a very good guess, absolutely any crap will work. 2SC945, 2SC1815, PN2222...
2SC2240, specifically the GR grade will be a closer fit, but yeah, I doubt it matters at all.
Tim
Pretty much my attitude Tim--if it's got 3 legs you are halfway there! ;D
A tip for the OP---------manufacturers like to use the same transistor as much as possible,so if something does look critical,take a look around to see if they use the same device in a non-critical spot.
Steal that one,& replace it with a 2N22?,BC10? or whatever!
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Try BC546 although 2sc2240 is also a good choice being a low noise audio device.
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Why use the Internet when you can dig in old dusty reference guides? ^-^
According to my Radio-Shack Semiconductor Reference Guide 1988 Edition: >:D
The equivalent of 2SC458 is Radio-Shack transistor 276-2009.
http://www.radioshack.com/product/index.jsp?productId=2062608 (http://www.radioshack.com/product/index.jsp?productId=2062608)
It's a MPS2222A equivalent.