Electronics Forum | Fri Dec 27 12:42:36 EST 2019 | rgduval
In your video, it looks to me as though the bottom of the glass is too low, but, I can't tell for certain. As a general rule, keep the top of the wave no higher than the mid-point of the PCB. Top flow will take care of itself thanks to flux and cap
Electronics Forum | Thu Mar 22 13:41:41 EST 2001 | mparker
What's the reality of the situation? Are you creating a specmanship issue here just to satisfy Class 3? Can you demonstrate that the paste volume applied to the plastic QFP's give sufficient overall fillets for mechanical and electrical properties? W
Electronics Forum | Fri Dec 08 06:34:55 EST 2006 | Rob
Try flux buster ICT pins.
Electronics Forum | Tue Dec 19 23:09:25 EST 2006 | laxminarayana pai
Well, you need to change your solder paste.There are pastes available in the market which are meant for ICT pin testability.
Electronics Forum | Fri Dec 08 08:25:03 EST 2006 | jhaviland
Depending on the system you can program in a loop where if the board fails a contact to cycle the vacuum once or twice. it wears on the pins a little faster since you cycle 2 times (maybe more) per board but it could help increase the FPY. I know Gen
Electronics Forum | Mon Jul 21 08:34:44 EDT 2003 | Don Bell
Blow holes/ pin holes in solder joints are the result of multiple root causes. Suggested analysis might look like this; 1) What method of solder preservation is used on the bare board. (hasl,enig, osp, etc.) HASL can leave unwanted flux residues,
Electronics Forum | Tue Sep 24 14:38:53 EDT 2002 | Jim M.
The EMS company i work for assembles a small PCB board that requires 10 solid press fit pins installed. The pins are Phosphor Bronze, CDA-510 Alloy, Grade A, 3/4 hard with a finish of .00012 min tin/lead over .00005 min nickel.I would like these pla
Electronics Forum | Tue Aug 10 05:32:42 EDT 2004 | praveen_madaan@jabil.com
Hi, Has any body experienced the problem of poor cotacts on HDMI connectors. The connectors pins are gold plated and we see some kind of white residue on the gold pins.How to check if this is a flux residue?We are using No Clean flux in wave solderin
Electronics Forum | Wed Sep 01 08:27:38 EDT 2004 | davef
Zinc from the brass [Cu3Zn2] diffuses into the tin causing solderability problems. Just 0.001% of Zn in your solder can render it fit for the scrap heap. So, you need a barrier plate between the brass and the tin. Copper or nickel-plating is commonl
Electronics Forum | Mon May 15 13:05:31 EDT 2017 | edhare
Pin holes in the gold can allow for corrosion of the underlying nickel and copper to form copper and nickel oxides on the gold surface (example - http://www.semlab.com/blog/?p=564. The corrosion can work itself all the way through the EN layer (exam
