Electronics Forum: selective and soldering and no and fill (Page 1 of 1)

Selective soldering pallets and solder balls

Electronics Forum | Mon Dec 02 12:52:40 EST 2002 | slthomas

We're trying a selective soldering pallet for the first time with mixed reviews. Are solder balls a prevalent problem with this process? Most of them seem to correspond with pallet wall locations....is it too much turbulence from the rotary chip wav

Selective soldering pallets and solder balls

Electronics Forum | Tue Dec 10 14:10:38 EST 2002 | Randy Villeneuve

Steve, I wave solder most if not all our boards with selective wave pallets. I did not catch if the solder balls were on top of the board or on the bottom but that will make a difference on what to do to get rid of them. Pallets are good and bad. On

Gold plated board, with csp's and 0603 with no clean apetures

Electronics Forum | Wed Oct 02 18:18:58 EDT 2002 | davef

The steadfast rule of thumb is: In order to get reliable reflow, you need to be at or higher than [liquidus + 20�C] for about 5 to 10 seconds, rather than those old "60 seconds above 183�C" guideline. This provides for setting your peak based on the

SAC305 and Selective Soldering

Electronics Forum | Wed Sep 18 14:12:40 EDT 2013 | pjchonis

Hello Bachman. SAC305 is the most common lead-free solder alloy, not only for wave soldering but also selective. Most of our selective customers (especially automotive) are using SAC305. What is more important than the alloy to consider is the flux

Foam fluxer maintenance, storage and cleaning

Electronics Forum | Sun Nov 08 15:27:25 EST 2015 | davef

Thinner: Flux thinner, NOT paint thinner We kept a spare stone in thinner in inventory. We cut PVC pipe to size, cap in one end, screw thread on the other, stone inside, filled with flux thinner and covered with a screw cap. I don't remember who we

Programming for Pick & Place and AOI machines

Electronics Forum | Mon Jul 31 15:16:43 EDT 2017 | emeto

John, contemporary machines provide their own software for programming - most you can do completely offline. There are several tricks here: 1. Design libraries correctly - you should have polarity convention that matches your P&P and your AOI machi

What is the preffered spacing between PTH and SMT pads

Electronics Forum | Thu Apr 30 22:40:32 EDT 2009 | davef

Selective Wave Soldering DoE to Develop DfM Guidelines for Lead and Pb-Free Assemblies Written by Makram Boulos, Craig Hamilton, Mario Moreno, Ramon Mendez, German Soto and Jessica Herrera Circuits Assembly Magazine, 31 December 2008 19:00

Step by step guide in evaluation of Solder Bar and Flux

Electronics Forum | Mon Dec 11 20:44:37 EST 2006 | davef

Title : LEAD-FREE WAVE SOLDER FLUX EVALUATION Author : Michael Havener Author Company : Benchmark Electronics, Inc Date : 09/25/2005 Conference : SMTA International Abstract : The European Union�s deadline to ban lead in electronic pr

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