Another LM3886 PCB!!

troystg · 6th October 2004, 12:52 AM

Hi All-

I am working on another LM3886 PCB but this PCB needs to be as narrow as possible. I am hoping to make the PCB just slightly wider than the actual chip. I will be using "smallish" caps on the PCB and additional caps on the pwr supply board. Also components on both sides as needed to help minimize the size.

What I am requesting in this thread (so we can kill it quickly) is for someone's file from ExpressPCB or Eagle that I can use for the LM3886 mounting holes.

They are NOT the standard .100 spacing, and I am not having any luck making my own from scratch.

Any assistance would be appreciated.

Thank you in advance,

Troy

Edit: Email address might be nice... stgrab@yahoo.com

scottnixon · 6th October 2004, 01:14 AM

They are 0.134 center to center. National's pdf on 3886 has all the packaging dims , but the spacing across has to de deduced. Treat it as .135 and set your snap grid to 5 mils.

rayban68 · 6th October 2004, 02:11 AM

I emailed you an lm&opa.zip file that contains the package that you need. I downloaded it off the forum several months ago, so the credit goes to whomever made it available at the time.

cheers

ray

troystg · 6th October 2004, 02:23 AM

Thanks Ray-

I did some searches for it, as I also remember someone posting it, but came up with pages of hits. I'm still going through them.

Thanks again,

Troy

rayban68 · 7th October 2004, 12:02 AM

I'll post it here as well.

neutron7 · 7th October 2004, 03:13 AM

im not going to help you because i also want to make a super low profile amp

maybe 1/2 inch thick

carlmart · 7th October 2004, 11:35 AM

Quote:

Originally posted by rayban68
I'll post it here as well.

What file type is lbr?

Carlos

troystg · 7th October 2004, 03:50 PM

Hey Carlos-

Library file for Eagle.

Thanks,

Troy

troystg · 7th October 2004, 03:51 PM

Hey neutron7-

Then you make it and sell me some boards... I'm impartial... Just need a narrow PBC.

Thanks,

Troy

carlmart · 7th October 2004, 04:22 PM

Quote:

Originally posted by rabstg
Hey Carlos-

Library file for Eagle.

Sorry, not an Eagle user.

Carlos

6th October 2004, 12:52 AM	#1
troystg diyAudio Member Join Date: Apr 2004 Location: Lousy Anna	Another LM3886 PCB!! Hi All- I am working on another LM3886 PCB but this PCB needs to be as narrow as possible. I am hoping to make the PCB just slightly wider than the actual chip. I will be using "smallish" caps on the PCB and additional caps on the pwr supply board. Also components on both sides as needed to help minimize the size. What I am requesting in this thread (so we can kill it quickly) is for someone's file from ExpressPCB or Eagle that I can use for the LM3886 mounting holes. They are NOT the standard .100 spacing, and I am not having any luck making my own from scratch. Any assistance would be appreciated. Thank you in advance, Troy Edit: Email address might be nice... stgrab@yahoo.com

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6th October 2004, 01:14 AM	#2
scottnixon diyAudio Member Join Date: Mar 2001 Location: High Point, NC	They are 0.134 center to center. National's pdf on 3886 has all the packaging dims , but the spacing across has to de deduced. Treat it as .135 and set your snap grid to 5 mils.

6th October 2004, 02:11 AM	#3
rayban68 diyAudio Member Join Date: Mar 2004 Location: Prince George, BC, Canada	I emailed you an lm&opa.zip file that contains the package that you need. I downloaded it off the forum several months ago, so the credit goes to whomever made it available at the time. cheers ray

6th October 2004, 02:23 AM	#4
troystg diyAudio Member Join Date: Apr 2004 Location: Lousy Anna	Thanks Ray- I did some searches for it, as I also remember someone posting it, but came up with pages of hits. I'm still going through them. Thanks again, Troy

7th October 2004, 03:13 AM	#6
neutron7 diyAudio Member Join Date: Dec 2003 Location: Toronto Canada	im not going to help you because i also want to make a super low profile amp maybe 1/2 inch thick

7th October 2004, 03:50 PM	#8
troystg diyAudio Member Join Date: Apr 2004 Location: Lousy Anna	Hey Carlos- Library file for Eagle. Thanks, Troy

7th October 2004, 03:51 PM	#9
troystg diyAudio Member Join Date: Apr 2004 Location: Lousy Anna	Hey neutron7- Then you make it and sell me some boards... I'm impartial... Just need a narrow PBC. Thanks, Troy