Electronics Forum: stencil (Page 413 of 540)

Solder balls on gold pad

Electronics Forum | Wed Jul 17 12:07:48 EDT 2002 | dragonslayr

DaveF is correct in directing you to the archives. This problem type has been discussed many times, it is quite common. Questions to ask yourself and provide us with answers are: It always happens or random? All assemblies or just one? solder paste

Cleaning SMD Adhesives

Electronics Forum | Thu Jul 25 05:56:32 EDT 2002 | ericchua

Hello, Understand you have problem of cleaning adhesives from Dek Pump Print stencil. Well, we have a cleaning machine which able to clean solder paste and adhesives. And also, we are not using any chemical but use water-base detergent. We had few c

X outs

Electronics Forum | Tue Jul 30 11:31:37 EDT 2002 | Bob

Be careful when using a sticker, if it is too thick it can affect the print, you may get leakage which can cause the underside of the stencil to get dirty. Another option depending on the quantity is to segregate the boards so that you do not have t

Rework Equipment

Electronics Forum | Sun Jul 28 23:11:52 EDT 2002 | caldon

Sam - If I owned Cal Driscoll Electronics and were looking for a rework system a few things I would consider: 1) Convection is key (IR as an under heater or pre heat is ok but not as the main heat source). 2)programming simple? User Friendly and easy

Document Control Center software recommendations

Electronics Forum | Tue Jul 30 13:58:26 EDT 2002 | dragonslayr

To all SMTneters: I am seeking recommendations for software packages. I will be managing a Document Control Center for a Contract Manufacturer. I am aware of the functions, duties but do not know the commercial names of software needed. We will be ne

Glue & Paste Printing on Same side of the PCB

Electronics Forum | Wed Aug 07 05:08:04 EDT 2002 | matherat

This sounds like it could be a SIPAD solid solder application. Bring the boards in with the solderpaste already on them in a flattened solid form. Then you could print glue on them without disturbing wet paste. 1.Print glue. (Might take a little

Downtime Calculation

Electronics Forum | Tue Aug 06 08:55:07 EDT 2002 | Brandon

How do you calculate downtime of an SMT Line with 5 machines (1 Printer, 3 Pick and Place and 1 Oven)? Let's say that my stencil printer is down, since it is the beginning of my process my whole line is down. But if my 1st pick and place machine is

Solder Paste and fine pitch components

Electronics Forum | Thu Sep 19 11:14:45 EDT 2002 | Jim M.

We had lots of problems with bridging on 15.8mm pitch, QFP17-160 at the start.The board was .032 thick, double sided-six boards to a panel. Here is the problems (not neccessarily in the biggest to little but as i remember them) and solutions that he

UltraSonic cleaning machine

Electronics Forum | Wed Sep 25 09:24:54 EDT 2002 | caldon

Michael- Please when concidering you U-sonic machine, keep in mind possible chemistries Petroferm, Kyzen, Aqueous technologies, and Zestron products. All are good products and all need to be evaluated with your stencils. Depending on your component t

SC-79 (SOD523) component placement

Electronics Forum | Thu Oct 17 21:32:28 EDT 2002 | davef

Please help to clairify the problem. Are we talking: * A pre-reflow [placement] problem? * A post-reflow [solder wetting] problem? Is the wetting issue that you mention related to the board or to the component? Please give us a little more detail

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