Is this a good lot of chip amps?

saabracer23 · 22nd March 2007, 04:12 AM

Hey guys I am getting some things together to build a BPA300 later on down the road. I will need 12 LM3886s if I am correct.

I this a good lot:
http://cgi.ebay.com/12X-LM3886-High-...QQcmdZViewItem

There are two different styles of chips, is this ok? Is it true about what he says about the LM3886Ts being more efficient?:

"In bridge version, the LM3886T is more efficient due to his metallic socket !"

Dan

Nordic · 22nd March 2007, 09:31 AM

The metal tabs allows better thermal transfer to the heatsink... on the other hand it is electricaly conductive (connected to V-) so for lots of chips it may be easier to use the plastic tabs...

Mayday · 22nd March 2007, 02:25 PM

They've got the TF's for $1,99, look a bit down on front page.
http://www.bgmicro.com/index.asp

impsick · 23rd March 2007, 06:41 AM

they look used, are they used? i would go for tf's just cause you wont have to worry about isolAting the chips drom heatsink, or heatsink from chassis

Mayday · 23rd March 2007, 11:08 AM

Yes used, but supposed to be tested.

saabracer23 · 23rd March 2007, 06:30 PM

Thanks guys for the response. Sounds like the tf's are the better way to go. Thanks for the good find Mayday, is that where you purchased your chips for the BPA300?

Dan

Mayday · 23rd March 2007, 06:37 PM

Yes it is.

22nd March 2007, 04:12 AM	#1
saabracer23 diyAudio Member Join Date: May 2006	Is this a good lot of chip amps? Hey guys I am getting some things together to build a BPA300 later on down the road. I will need 12 LM3886s if I am correct. I this a good lot: http://cgi.ebay.com/12X-LM3886-High-...QQcmdZViewItem There are two different styles of chips, is this ok? Is it true about what he says about the LM3886Ts being more efficient?: "In bridge version, the LM3886T is more efficient due to his metallic socket !" Dan

23rd March 2007, 06:41 AM	#4
impsick diyAudio Member Join Date: Dec 2006	they look used, are they used? i would go for tf's just cause you wont have to worry about isolAting the chips drom heatsink, or heatsink from chassis __________________ "Nothing happens for a reason. There are just reasons why things happen." Quote me on that. http://stores.ebay.com/AudioGrade?_rdc=1

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22nd March 2007, 09:31 AM	#2
Nordic diyAudio Member Join Date: Sep 2005	The metal tabs allows better thermal transfer to the heatsink... on the other hand it is electricaly conductive (connected to V-) so for lots of chips it may be easier to use the plastic tabs...

22nd March 2007, 02:25 PM	#3
Mayday diyAudio Member Join Date: Mar 2004 Location: Sweden	They've got the TF's for $1,99, look a bit down on front page. http://www.bgmicro.com/index.asp

23rd March 2007, 11:08 AM	#5
Mayday diyAudio Member Join Date: Mar 2004 Location: Sweden	Yes used, but supposed to be tested.

23rd March 2007, 06:30 PM	#6
saabracer23 diyAudio Member Join Date: May 2006	Thanks guys for the response. Sounds like the tf's are the better way to go. Thanks for the good find Mayday, is that where you purchased your chips for the BPA300? Dan

23rd March 2007, 06:37 PM	#7
Mayday diyAudio Member Join Date: Mar 2004 Location: Sweden	Yes it is.

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