Electronics Forum | Fri Mar 06 09:28:14 EST 1998 | Mike
I will be starting a conformal coating process soon, I am looking for any pointers on 1) Best method for masking components, tape mask, liqued mask 2) Which is best Spray or Dip? 3) Compatiblity with no clean solder paste (flux residue) I have Mil
Electronics Forum | Sun Mar 01 13:18:42 EST 1998 | Sam Sangani
Are you using Stencils to apply solder Paste for your surface mount PC board ? If so, please visit our web page http://www.pnconline.com/stencil.htm We make Laser Cut stencil with Re-Usable ACCUFRAME at lowest cost in the SMT industries. We also wil
Electronics Forum | Fri Feb 20 16:39:51 EST 1998 | Jim Blankenhorn
| I have developed a method to increase SMT circuit density | up to 40%. Looking for interested PCB fabricators and | designers for process improvement. Tell us more. How can it be done and what does it take from a design level. What about solder dra
Electronics Forum | Wed Mar 11 00:09:13 EST 1998 | Fabian Morales
I haven't worked with Protecto but I have seen very good results using a no-clean flux and a nitrogen atmosphere in the reflow oven. | Entek or Protecto? | I've hear Kester's Protecto is a very good OSP that may be more assembly process-friendly th
Electronics Forum | Tue Jan 27 03:06:35 EST 1998 | Vanessa Munoz
I am just implementing a Statistical Process Control to the SMD. A few simple questions: 1. Is it necessary to perform a sampling plan for suppliers inspection? 2. What are the basical points to control ourself and inspection at a supplier? I mean th
Electronics Forum | Fri Jan 16 13:41:53 EST 1998 | Luchezar Georgiev
Is there any way to implement SMT at home? I want to assemble a prototype board of mine. How can I hand-solder a 208-pin 0.5 mm lead pitch PQFP -- lead-by-lead (the usual way), or side-by-side (partial heating method)? Alas, no SMD rework equipment a
Electronics Forum | Wed Jan 14 08:28:15 EST 1998 | Allison
Contact your solder paste manufacturer and get the reflow profile recommended for that particular paste. Then, duplicate that reflow profile on your oven. You will need to use thermocouples. You may have to tweak this profile a little. | We use no
Electronics Forum | Tue Dec 30 20:48:31 EST 1997 | Tom Gervascio
Has anyone had any experience with thermal shocking and cracking of SMD capacitors during the rework process? My company was advised to preheat capacitors to 125 C at a rate of 2 C/sec before replacing them onto boards. Would this maybe degrade c
Electronics Forum | Fri Jan 23 18:03:06 EST 1998 | Steve Gregory
Paul, I've got a third-level ISO Stencil Specification procedure that I did at a past employer that I'll send you...it also deals with the DEK-265 printer (which is what we used) when I talk about frame sizes and image positioning, but you can edit i
Electronics Forum | Tue Dec 09 17:09:51 EST 1997 | Frank Silva
| We are doing a research on auto-inspection machine used for SMT component mounted PCBA. | If anyone would have more info., please give me some details. Mr. Szeto, my company is involved in manufacturing automatic x-ray inspection systems to provide
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