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17th July 2005, 09:16 AM
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#1 |
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diyAudio Member
Join Date: May 2005
Location: Europe
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What can I use (better) instead of BC141/161
I have an headphone amp, with OP27 and BC141/162 per channel.
I' like to improve the sound quality, and I think the BC141/161 has poor quality. Anyone knows the better one??? thx! |
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17th July 2005, 10:44 PM
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#2 |
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diyAudio Member
Join Date: Feb 2004
Location: Recife - Brasil Northeast
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Not completely sure, but i imagine that BD139/140 will fit, or the small transistor
BC639 and BC640, that is the same transistor made smaller.
The BC639 can dissipate 1 watt only, can hold 1 ampere..... do not believe...better to believe 500 miliwatts. The BD139 can hold 1.5 amperes, dissipation (real) is around 8 watts only, and can work in Radio frequency transmitters, up to 30 Megahertz without problem...so, the - 3 dB roll of will be not a problem to you The gain is around 150. I think will match your needs...let's listen to more forum friends. They can correct me, if i am wrong. regards, Carlos
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