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Driver transistors for 2SC5200&1943
Driver transistors for 2SC5200&1943
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Old 11th May 2008, 12:27 AM   #41
ttan98 is offline ttan98  Australia
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Quote:
Originally posted by Lumba Ogir
Hi,
what is the collector output capacitance of the extremely popular BD139/BD140?

I think you can look up from BD139/BD140 datasheet!
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Old 11th May 2008, 12:41 AM   #42
Lumba Ogir is offline Lumba Ogir  Sweden
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ttan98,
I have looked, have you? In that case from which one?
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Old 11th May 2008, 12:48 AM   #43
ttan98 is offline ttan98  Australia
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Join Date: Apr 2006
Location: Melb
Quote:
Originally posted by Lumba Ogir
ttan98,
I have looked, have you? In that case from which one?

I believe it should there if I am not mistaken labelled as Cce, if you use as common emmiter(unlikely), if you use as emmiter follower, o/p capacitance is small can be neglected.
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Old 11th May 2008, 01:52 AM   #44
Lumba Ogir is offline Lumba Ogir  Sweden
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ttan98,
it should be labelled as Cob, but not shown, which is deplorable. I do not expect it to be negligible for a second, on the contrary. (Pretty academic for me personally as I do not use them in any configuration).
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