Electronics Forum: double sided pcb (Page 10 of 194)

Repair of FR4 double-sided pcb

Electronics Forum | Thu Aug 22 07:48:30 EDT 2002 | Dave Milk

While separating individual pcbs from a panel, operators have caused delamination of the edge of the board, at the tabs that were cut. How can these boards be repaired? The delamination causes them to fail J-STD-001C 9.2.1.1.d. Also, what would yo

Repair of FR4 double-sided pcb

Electronics Forum | Thu Aug 29 13:54:54 EDT 2002 | MikeF

I prefer to eat my crunchy Cheetos while drinking a cold Southpaw Light, at home. My second choice is a Mountain Dew and Cheetos in the afternoon to get me through the rest of the day. All y'all have a good holiday weekend. Mike F

Re: Simutaneous Double sided reflow assy

Electronics Forum | Thu Jul 20 17:01:26 EDT 2000 | Bob Willis

Here is some further information on SDSRS process, but please purchase a copy of the report from t he SMTA as all the money goes to charity. In the UK the SMART Group raised over �3000 for the homeless. SMTA have been raising a lot of money for the G

wrinkles solder joints after double reflow

Electronics Forum | Mon Mar 22 19:46:17 EST 2004 | pdeuel

The bottom side is going into reflow somewhare near melting point of solder. Reduce bottom side temprature. Get a good mole so ramp and soak tempratures can be checked on bolth sides of the PCB. The object is to keep bottom side parts from approching

Adhesive printing with double side board

Electronics Forum | Tue Jul 24 10:29:10 EDT 2007 | ed_faranda

Is there a reason why you want to wash the board before wave?!?!? What is your process flow? I run bottom side of my boards first, then top just to make it easier to setup (easier to put those support pins around those smaller components). But,

Adhesive printing with double side board

Electronics Forum | Tue Jul 24 10:57:12 EDT 2007 | babe7362000

Is there a reason why you want to wash the board > before wave?!?!? > > What is your process > flow? > > I run bottom side of my boards first, > then top just to make it easier to setup (easier > to put those support pins around those smaller

wrinkles solder joints after double reflow

Electronics Forum | Mon Mar 22 09:37:28 EST 2004 | ellis

After 2nd time reflow of double reflow, wrinkles solder joints found on SOIC and SOT components.(only happen on the components at the underside of pcb during reflow, top side components dont have this problem) is this due to the reflow process proble

Dual lane vs double line SMT

Electronics Forum | Wed Mar 04 03:32:55 EST 2020 | tamasmagyar

Hi toki, First of all it depends on how much the company would like to invest in such a methodology. Second of all, why would you make a line to be single lane - double line one after each other, is that automotive / medical standard, not to handle

Repair of FR4 double-sided pcb

Electronics Forum | Thu Aug 22 22:10:26 EDT 2002 | davef

Ooooow! �Can it be fixed?� Good question. How BAD did you damage it? * Since you are asking this question, I am NOT inspired by the potential that you have the skills to fix the board. Go Jeff Ferry�s site at Circuit Repair Center [If you can�t f

Double sided BGAs

Electronics Forum | Thu Jun 23 08:58:00 EDT 2005 | Irene Taylor

We are defining a new assembly process for a double sided card that has 26 BGAs on the top side and 14 BGAs on the bottom side. We currently have one double sided BGA board with one BGA per side and have to epoxy one BGA (35mm X 35mm - 352 ball count


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