Electronics Forum: boarded (Page 540 of 1638)

Solder Splash

Electronics Forum | Wed Sep 01 22:41:11 EDT 1999 | FMung

Dear Netters, Can you kindly suggest what cause solder splash in IR reflow boards ?? What are the main causes normally ?? Best Rgds, Felix

screen printing adhesives

Electronics Forum | Tue Aug 24 10:36:20 EDT 1999 | Chad Barnett

JUST WANDERING IF ANYONE IS PRINTING ADHESIVE ON THE BOTTOM SIDE OF BOARD WITH THROUGH HOLE COMPONENTS ALREADY PLACED. I'VE BEEN TOLD IT IS POSSIBLE BUT WANT TO LOOK INTO THIS PROCESS IN DEPTH.

Paste Printing @ 45 degrees

Electronics Forum | Fri Aug 13 09:59:13 EDT 1999 | Mark Quealy

Has anybody adopted the method of stencil printing with the board at a 45 degree angle to the squeegee blade? What are the benefits and drawbacks? I've heard you get better fine pitch results. TX Mark

Oven Temperature for Solder Reflow

Electronics Forum | Wed Aug 04 18:17:21 EDT 1999 | Judy Forbes

What oven temperature should be used to reflow solder (Sn63Pb37) on a PC board (0.075" to 0.100" thickness) in 5 to 10 minutes?

BGA PAD REDUCTION

Electronics Forum | Fri Jul 30 20:27:49 EDT 1999 | Dior

Has anyone done the research on BGA pad size? suppose I have a 0.030" diameter pad as recommended pad size from the spec, what will the minimum pad size allowed? We are laying out a high density board.

Re: BGA PAD REDUCTION

Electronics Forum | Sat Jul 31 13:27:42 EDT 1999 | Miguel Mariscal

| Has anyone done the research on BGA pad size? suppose I have a 0.030" diameter pad as recommended pad size from the spec, what will the minimum pad size allowed? We are laying out a high density board. |

Re: 600 pin BGA Reliability

Electronics Forum | Tue Jul 27 17:00:07 EDT 1999 | Dave Kennedy - APE South

How many layers is the board.... Is the BGA ceramic or plastic? Dave Kennedy APE South apecorp.com

testing after SMt assembly

Electronics Forum | Tue Jul 20 02:19:59 EDT 1999 | Hunter

Dear all Please help me to know what kind of tests usually done after SMT Pick & place and reflow oven. Our appliocation is Mainly fabrication of mother boards. Thanks

Soldering on gold

Electronics Forum | Thu Jul 15 16:29:49 EDT 1999 | Charles Morris

We are currently assemblying several different board type with gold plated lands with varying results. Can any of you that has successful experience in this area give me some pointers. What paste do you use? Do you use the recommended reflow profi

Sub-contractor selection

Electronics Forum | Tue Jul 06 11:26:38 EDT 1999 | Carol Zhang

We are looking for some subcontractors to do surface mount technology boards for us. Is there anything I should pay specific attention when I visit the subcontractor's site? Thank you for any advice


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