Electronics Forum | Tue Aug 05 21:18:24 EDT 2003 | cardinal
Hi, One thing you might want to do has to deal with the venting over the top of your spray fluxer. Many times the exhaust comes from the side; instead of directly inline on top of the spray fluxer. This will draw the flux up the thru-hole joints m
Electronics Forum | Thu Nov 06 09:10:13 EST 2003 | successmani
hi, NEMI recommends separate solders for reflow sodlering and wave soldering. Reflow soldering- Sn-3.9Ag-0.7Cu Wave sodlering- Sn-0.7CU Wavesoldering- Sn-0.7Ag What will happen if a mixed technolgy PCb board containing both through hole and surface
Electronics Forum | Mon Jul 19 21:33:26 EDT 2004 | davef
Are you talking about small 'volcanos' that burst through PTH solder connections? If so, you have moisture outgassing through the PTH barrels: * Plating on the hole of your bare board is too thin. It should be greater than 1 thou [25um]. * Your bak
Electronics Forum | Tue Sep 14 03:14:52 EDT 2004 | Adam
Hi Has anyone see a defect,where after one pass over the wave, pins on conectors seem to have a tenancy to have a mimimum solder fillet on the bottom-side of the board. There seems to be no trend, It could range from half a dozen to two dozen from b
Electronics Forum | Tue Sep 14 16:09:50 EDT 2004 | HOSS
Adam, Is your fluxer giving you good coverage into the holes and to the top of the board? If your hole size in relation to the lead diameter is too small, this may be contributing. I'd check your fluxing first though. Just an aside.....We just sw
Electronics Forum | Wed Sep 15 05:15:24 EDT 2004 | Adam
I have chceked the fluxing application, I seem to be getting good consistent coverage across the board using our foam fluxing system. Good flux penetration on the top-side of the through-hole plating, as this was checked using a fax paper.There is no
Electronics Forum | Mon Sep 20 12:35:01 EDT 2004 | Rob
Hi Adam, We had a reverse of the previous - if we didn't have our smartwave running at at least 750 RPM behind the main wave, the pressure dropped & gave us inconsistant soldering. Otherwise... 1) are the components tarnished at all, or stored in
Electronics Forum | Mon Sep 27 11:10:52 EDT 2004 | grayman
First, Your flux is no good replace it. second, Check for pre- oxides. The smaller the component or the leads makes it difficult to solder specially if it has oxide. Thrid, check the board to wave parallelism. Maybe your wave is not parallel to the b
Electronics Forum | Thu Sep 30 03:33:58 EDT 2004 | pioneertechnology
Hi All We have two boards that we produce which are chip on glue. For this we use KME BD12's which use air to dispense the glue dot on to the board. This is not ideal as the glue dot size differs as we go down the tube causing us quality problems.
Electronics Forum | Wed May 11 08:41:46 EDT 2005 | Rob.
Cheers Jerry, forgot the most important one! Also want it to do: laser 3D volumetric solderpaste inspection Pre-reflow (including fault logging by placement machine & individual feeder) Post reflow solder joint inspection & handle lead free joints
