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BD139, BD140 - which brand?
BD139, BD140 - which brand?
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Old 17th April 2010, 03:02 AM   #1
lordearl is offline lordearl  Australia
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Default BD139, BD140 - which brand?

I notice STIMicro, Multicomp, ON Semi and Fairchild all currently manufacture these transistors - which is preferable for a headphone amp?
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Last edited by lordearl; 17th April 2010 at 03:06 AM.
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Old 17th April 2010, 03:19 AM   #2
amc184 is offline amc184  New Zealand
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BD139, BD140 - which brand?
ST, ON and Fairchild should all be okay. Multicomp is not actually a brand at all, it's the label under which Farnell sells generic, no-brand stuff. For semiconductors in critical places, I'd avoid Multicomp.

Pressed to make a choice, I'd go with ON.
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