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Old 13th June 2008, 04:45 PM   #1
damage is offline damage  United States
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Default BUZ71F specs?

Anyone have the specific datasheet for the BUZ71F? Can find the BUZ71 but not 71F.

thanks!
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Old 13th June 2008, 07:28 PM   #2
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The BUZ71F is probably the same basic part as the BUZ71 except that it's fully encapsulated. The power dissipation and the current rating of the fully encapsulated parts is somewhat lower (~60% of the standard part).

What's the application?
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Old 13th June 2008, 08:13 PM   #3
damage is offline damage  United States
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The case is a standard TO-220. It's in a 2fet per side Coustic 190.

Thanks!
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Old 13th June 2008, 08:13 PM   #4
damage is offline damage  United States
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Outputs are TIP142/147 pair that spec at 100Vceb at 10A Ic, 20A peak.
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Old 13th June 2008, 08:57 PM   #5
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If it's a standard case, the BUZ71 should work. If I'm not mistaken, they used IRF540s in the next series of coustic amps. If you have them on hand, you may want to try them. They're rated for more current than the BUZ71s.
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Old 13th June 2008, 09:20 PM   #6
damage is offline damage  United States
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Thanks! I'll give those a try.
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Old 18th June 2008, 12:13 AM   #7
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There's also the BUZ71A,with IIRC,is rated a bit higher than the regular BUZ71.

I once repaired an amp that used the BUZ71A's,and they sent me the plain BUZ71's...The amp was not happy with those,and I had to re-order the BUZ71A's (and put an explicit note on my order form!)
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Old 18th June 2008, 03:58 AM   #8
ppia600 is offline ppia600  United States
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Haha, I like that coustic series. 190 and 380. They actually look like amps. Had a guy offer me a 190 for an old electric golf cart back in 96 or 97... he stole the cart and never gave me the amp, what a douche.
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Old 21st August 2008, 03:07 AM   #9
damage is offline damage  United States
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Well, the Coustic 190 lives. Sounds pretty darn good. Only thing, the buz71F are plastic case. I stupidly ordered metal backed fets. Oh well, I fortunately had spare mica insulators.
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Old 21st August 2008, 04:12 AM   #10
ppia600 is offline ppia600  United States
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Congratulations
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