Electronics Forum: pre (Page 9 of 102)

Wave solder question

Electronics Forum | Tue Feb 19 14:00:55 EST 2002 | global

We have had some discussions about what causes parts to lift out of the holes when going over the wave on our flow solder machine. The machine being used is a Treiber (700 series). There are two bottom pre-heaters and one top pre-heater. We try to pr

AOI, Pre or Post Reflow?

Electronics Forum | Wed Mar 12 09:18:10 EST 2003 | MA/NY DDave

Hi Thanks, Going to APEX to see personal demos and hear what they offer and recommend is a great idea. I mean if you want to put AOI everyplace I am sure you will be supported with open arms. What I found interesting in the article was that large

Programming help for GSM

Electronics Forum | Wed Mar 31 21:57:21 EST 2004 | pdeuel

Minor problem with rejected parts on a GSM C4 single flex head. UIC support was helpfull but I thought some of you may have encountered this problem and know what's the matter. We are rejecting 1 out of 3 SOT-63 parts. The problem is occuring to part

Lead-Free SMD repair

Electronics Forum | Sat Apr 30 10:37:25 EDT 2005 | Daniel

I think he did mentioned the board size in the inital thread: "265mm x 207mm pcb", but maybe it was not clear written. I have a question about rework and pre-heat: is it necessary to have the pre-heater to cover the whole board size, even if you onl

SN100C wetting problems

Electronics Forum | Fri Jul 13 12:32:14 EDT 2007 | rgduval

We've experienced this issue with SN100. A couple of things we've tried, all with varying levels of success: 1. Longer pre-heats. We use SN100 in a solder pot, and pre-heat the boards on our wave machine. This did have a positive effect, but I ne

MPM AP25Hie Pre Board Stop error

Electronics Forum | Fri Jul 27 09:28:35 EDT 2007 | rich7799

I have Mpm ap25hie, s/w ver 7.1a The problem I have is that the machine works fine until I teach or use the pre board stop function. As soon as I use this the machine will not load the pcb to the centre of the work nest. I can manually change boardst

PCB Delamination

Electronics Forum | Thu Jan 31 18:14:40 EST 2008 | boardhouse

Hi Felix, First thing to verify is that your supplier is actually suppling you with the correct material. China is known for not keeping with the requested materials and will substitute if not controlled. I would recomend ITEQ, TUC or Nan ya for of

PCB residue after wave solder

Electronics Forum | Wed Jul 29 07:26:12 EDT 2009 | dilogic

Hi Patrick, thanks for the response. I might add some more information - we succesfully soldered some boards with the same settings of belt speed, pre-heat temp. etc. This batch of boards differs from the previous in a way that they are 4-layer. May

HMP hand soldering.

Electronics Forum | Tue Sep 11 21:24:00 EDT 2012 | vergara1

I'm also looking for tips for SMT hand soldering > with Sn05Pb93.5Ag1.5. Our technician is quite > good with standard SMT hand soldering, but hasn't > worked with HMP solder. > > Some specific > questions: > > - If the iron tip is hot enough >

Re: Hand-Solder Pre-Heat

Electronics Forum | Sat May 01 04:49:21 EDT 1999 | Jeff Sanchez

| Mornin! | | We just had vendor in here pitching a "low-temperature rework system" which was intriguing, but too expensive. He did get me to thinking though, beyond heating ceramic caps before hand-soldering them, it seems like it would be ad


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