Electronics Forum | Fri Dec 18 12:45:23 EST 2015 | deanm
Using a vapor degreaser with a solvent such as Vertrel, Novec, Techspray 1655, Solstice, etc. may work for you but solvents can attack certain plastics. Should be fine for SMT though. This is assuming you are using a no-clean (RMA) type flux, not wat
Electronics Forum | Tue Jun 07 10:24:59 EDT 2016 | davef
wlsmt: You’ve got to help us out here: * Why did you apply solder paste to capacitors prior to water washing the PCBA [where the caps were attached?]? * Did you reflow the Alpha WS-609? * How is the Alpha WS-820 involved in this? * Talk about the
Electronics Forum | Thu Aug 18 09:41:05 EDT 2016 | jbuckley
Typically on my company's Mirtec systems, any anomalies, such as cracks, chips, etc. on chip capacitors and chip resistors are going to be detected with just a basic mounting inspector. We have a full image of the part (solder joint not included) as
Electronics Forum | Mon Sep 19 09:16:24 EDT 2016 | markhoch
Hi Shriram, Are you saying that there is a trace running between the pads for this 0603 capacitor? If so, this design may be causing a gasketing issue between the stencil and the PCB. The uneven height prevents the stencil from sitting flat on the PC
Electronics Forum | Wed Feb 01 02:30:12 EST 2017 | rob
Usually it's the motor start caps blowing on the motors - take one off a failed motor and check the type strapped to the side - our older ones use these: http://hk.element14.com/genteq/27l571/capacitor-polypropylene-pp-film/dp/1735893?ost=27L571&se
Electronics Forum | Wed Jun 21 12:33:39 EDT 2017 | sumote
I agree that a preheater would be a good thing to try. Before you buy one, try heating your boards up in an oven, then putting them on your machine. Any oven will do, just make sure you leave them in long enough to get a good thermal soak. Also, as
Electronics Forum | Wed Feb 14 02:06:05 EST 2018 | ameenullakhan
Hi Evitmov, Thanks for your valuable suggestion. we have used RTS profile. And profiles with an average soak and reflow time.:( Those profile didn't help us so much. It at later stage we have adopted to this hot soak profile. There is one partic
Electronics Forum | Thu Feb 01 03:02:50 EST 2018 | robl
Hi Rob, > > I did check with the board house, and > the confirmed that there was no Nickel plating, > but that the silver went straight onto the copper > in their immersion silver > process. > > Interestingly I've even tested an > unplated sam
Electronics Forum | Tue Jan 08 22:23:24 EST 2019 | kenneth0
Hi Prem, try take a few caps and bake them before assembling them to the board to see whether this problem goes away. Its a common problem these tentalum caps can outgas if there's moisture trapped within. Once verified that moisture is the culprit
Electronics Forum | Wed Jan 30 02:50:33 EST 2019 | electronics101
Hi Steve Thanks for coming back to me, you are correct IPC class 3 is required. We are getting great wetting onto the device but not as per IPC 3 with the wetting rising about 0.25mm. I am questioning whether it is actually possible with such a (re