Electronics Forum | Fri Jan 10 08:52:31 EST 2003 | nifhail
We are typical SMT subcontracting house. Recently I received RFQ for brds with DCA or Flip Chip technology. In our factory we only have typical SMT machines i,e Printer-HSP chipshooter-GSM IC placer-reflow oven. What are additional machines and pro
Electronics Forum | Tue Jul 08 20:24:26 EDT 2003 | davef
AlCapone: Consider determining the responsible party according to their ability to deal with the complexity of collecting and analyzing the information required to determine your process capability index. For expample: * Reflow oven: Fairly simple,
Electronics Forum | Wed Aug 27 00:45:35 EDT 2003 | kenBliss
Bman Each area and process has a unique machine for a reason. Professional engineers at the various OEM�s have thought these things through and there are specific reasons why you don't wash stencils in a board washer, bake pizzas in your reflow ove
Electronics Forum | Tue Nov 04 19:34:27 EST 2003 | gregoryyork
Blimey that's a problem and a half. Water Solubles will look completely different residue wise than No Cleans, pending age and solids contents No Cleans will go white powdery - watersolubles will stay oily Alternatively process reworked PCB's through
Electronics Forum | Fri Feb 20 08:56:42 EST 2004 | davef
We successfully clean WS flux on 1mm and 1.25mm pitch BGA. For 0.8mm pitch BGA, we use no clean, because we cannot remove the flux residue from under them efficiently. Use ion chromatography testing to be sure it is clean under the BGA. IC is the on
Electronics Forum | Thu Apr 22 00:14:08 EDT 2004 | snehal acharya
we are in Process controls field we have set up our own SMT line , we have MYDATA TP9-2U Pick & Place M/C & reflow oven & manual printer. since now our product demand is increasing so for enhancement of the quality & for speedy production i wanted to
Electronics Forum | Wed Apr 28 16:07:32 EDT 2004 | davef
In rework, your thermal recipe needs to better mimic the recipe that your use in your reflow oven. Oh, that and proper preheating of the board and BGA. [Yano, if you get bored fighting this, rereflowing the board is within reason.] That you are hi
Electronics Forum | Fri Apr 30 10:56:27 EDT 2004 | Bryan She
We tested J6 open on .5mm pitch CSP(In fact,only resistance much lower than normal).J6 is one of the corner ball of the CSP.Defect rate is about 3%. Stencil:4 mil thickness,10 mil square aperture, solder mask openning:10 mil diameter circle. Board fi
Electronics Forum | Thu Aug 05 12:28:44 EDT 2004 | jasont
Hi YuKim, Have you considered purchasing 2nd hand machines? Tekmart International Inc. can help you find a cost effective solution for your additional SMT line requirements. We have in stock and access to several of the machines you've listed; -
Electronics Forum | Wed Jan 12 07:22:10 EST 2005 | cyber_wolf
We seem to have an accountability issue when it comes to operators building defective product. Currently we are putting a piece of masking tape with the assembly #, work order, and operator initials on our black trays at the end of the reflow oven. I
