Power Devices for old Power Amplifier's from MOSPEC - Quality Standart like "ON" ?

tiefbassuebertr · 26th January 2010, 11:07 AM

The brand MOSPEC
:: Welcome :: MOSPEC SEMICONDUCTOR
offers a wide range of BjT types used in older power amplifiers:
:: Welcome :: MOSPEC SEMICONDUCTOR::POWER TRANSISTORS
unfortunately their datasheets are more short form

who knows more about the quality standart of this brand ?

wahab · 26th January 2010, 12:00 PM

a member said that hey are poor quality devices...
a pity , as they pretend to produce the
famed 2sa1302/2sc3281...
anyway, there s plentyfull of good devices from
the sanken, toshiba, or even fairchild and onsemi
that have good guaranted performances...

tiefbassuebertr · 26th January 2010, 01:45 PM

I would be very happy to have accurate analysis resp. comparable tests results (the question is, who make this?).
A wide range of technican believe that copied semiconductor from Far East are automatically unusable.
But the fact "Made in Taiwan" does not automatically mean "bad quality"

Simple estimates are not helpful.

jacco vermeulen · 26th January 2010, 01:59 PM

Quote:

Originally Posted by tiefbassuebertr

quality standart of this brand ?

Compare the datasheets of a Sanken 2SC2922 and Mospec 2SC2922

ontoaba · 24th February 2011, 04:14 PM

I just found this thread.
I have using some C2922/A1216 from MOSPEC about 8years ago, and doing some short test. I am only blowing two of them, may be enough for the test. As I remember, it is tougher than the spec on datasheet. Also has much lower Rbe, that indicates more electron mobility and heavier. They has the same numbering but cannot be used as replacement, too much differences, too slow and heavy compared to SANKEN, but may tougher when without heatsink isolator.

26th January 2010, 11:07 AM	#1
tiefbassuebertr diyAudio Member Join Date: Jul 2005 Location: D-55629 Schwarzerden	Power Devices for old Power Amplifier's from MOSPEC - Quality Standart like "ON" ? The brand MOSPEC :: Welcome :: MOSPEC SEMICONDUCTOR offers a wide range of BjT types used in older power amplifiers: :: Welcome :: MOSPEC SEMICONDUCTOR::POWER TRANSISTORS unfortunately their datasheets are more short form who knows more about the quality standart of this brand ?

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26th January 2010, 12:00 PM	#2
wahab diyAudio Member Join Date: Nov 2009 Location: algeria/france	a member said that hey are poor quality devices... a pity , as they pretend to produce the famed 2sa1302/2sc3281... anyway, there s plentyfull of good devices from the sanken, toshiba, or even fairchild and onsemi that have good guaranted performances...

26th January 2010, 01:45 PM	#3
tiefbassuebertr diyAudio Member Join Date: Jul 2005 Location: D-55629 Schwarzerden	I would be very happy to have accurate analysis resp. comparable tests results (the question is, who make this?). A wide range of technican believe that copied semiconductor from Far East are automatically unusable. But the fact "Made in Taiwan" does not automatically mean "bad quality" Simple estimates are not helpful.

24th February 2011, 04:14 PM	#5
ontoaba diyAudio Member Join Date: Nov 2009 Location: Kudus, & Malang	I just found this thread. I have using some C2922/A1216 from MOSPEC about 8years ago, and doing some short test. I am only blowing two of them, may be enough for the test. As I remember, it is tougher than the spec on datasheet. Also has much lower Rbe, that indicates more electron mobility and heavier. They has the same numbering but cannot be used as replacement, too much differences, too slow and heavy compared to SANKEN, but may tougher when without heatsink isolator.

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