Electronics Forum | Thu Jan 19 13:28:19 EST 2012 | waveroom
Two pictures. Dark circles around solder joints. leaded solder, water soluble flux, selective soldering and seeing these dark lines circling around solder joints. Can not remove this either. Any idea what is making this occur??? See attached photos
Electronics Forum | Wed Jun 06 16:11:54 EDT 2012 | pbiron
I am experiencing many solder balls when using my selective solder machine when leads are fairly close together. Using a no-clean flux (3.4% solids). I have changed the volume of flux with no change in amount of solder balls.
Electronics Forum | Wed Sep 19 07:19:46 EDT 2012 | mbnetto
Hi Melissa, We mount this component in the bottom side with adhesive epoxy and the solder is done on the wave solder machine. During the wave solder machine, we have the problem as like the picture.. no solder in one of the pads...
Electronics Forum | Fri Mar 08 03:21:18 EST 2013 | sdhmuni12
Can a ROHS PCB with ROHS solder paste can be cleaned in same basin/sink when Non-ROHS solder paste PCB are cleaned? Any detail procedure or cleaning technics for NON ROHS Solder Paste PCB VS ROHS Solder based PCB?
Electronics Forum | Sun Sep 08 15:07:42 EDT 2013 | davef
PCB designers specify the application of solder mask [eg, varnish, solder stop mask, solder resist, etc] to fabricators to reduce the potential of bridging between two conductive traces during assembly soldering processes [eg, wave, reflow and hand s
Electronics Forum | Tue May 13 07:04:54 EDT 2014 | hemant_pang23
I am looking for the solder wire leaded or lead free which can withstand the solder joint at temperature 450deree Celsius or more after soldering, since i need to form a solder joint at higher temperature area Pls suggest the part number for the sam
Electronics Forum | Thu Oct 23 04:19:15 EDT 2014 | garteaga
Our reflow oven builds solder on one specific panel type. It will have solder buildup inside the oven. We then end up with small solder balls on our panels. We think it may be the solder paste, the screen printer is leaving a clean wipe under the pa
Electronics Forum | Sun Feb 12 22:52:20 EST 2017 | ltchsze
Hi fellow professionals, Wondering whether anyone has experience with solder splashing from component terminal. Have identified the source using the component without printing solder paste on PCB. Wondering the root-cause of the solder splashing fr
Electronics Forum | Thu Nov 16 09:38:09 EST 2017 | vchauhan
I am curious to know anyone has used Samtec SEMA Solder Charge connector (SEARAY Seriese. I have done manufacturer's recommended solder paste and good reflow profile still the solder is leaching to the lead instead of becoming a solder connection. T
Electronics Forum | Fri Jan 11 06:28:40 EST 2019 | tirthkar8980
what is solder flux? what contents are used for manufacturing solder flux for solder sn/Pb 63/37 ( Application Wave Solder machine )