Electronics Forum | Mon Feb 19 13:31:25 EST 2001 | billschreiber
Hello Mark, EPA Certification can be a tremendous help to the user that is evaluating new cleaning processes. Let�s face it, if it wasn�t for the Earth�s ozone layer, everyone would still be using CFCs and a vapor degreaser to clean stencils, PCBs
Electronics Forum | Tue Aug 22 11:03:45 EDT 2000 | Dr. Ning-Cheng Lee
Hi Kelvin, Regarding to the surface finish of the leads, Sn or Pd may be the direction that the industry takes. First of all, the answer must be "Pb-Free", limiting our choices. Sn has good solderability, and it won't have too great of an impact o
Electronics Forum | Thu Jul 20 14:05:59 EDT 2000 | Mike McMonagle
With 0402 components becoming more common today outside of the telecommunications industry, our company is qualifying equipment and processes for an upcoming product incorporating 0402s. Having used 0402s in a previous position, I am planning a DOE o
Electronics Forum | Thu Dec 02 23:43:23 EST 1999 | Kantesh Doss
We have a serious misalignment problem of D-Pak components (Specifically Motorola's part number MJD-3055/MJD-2955)following reflow soldering process. We are using Alpha Metals UP78 solder paste. Our reflow oven is Nitrogen inerted and our oxygen leve
Electronics Forum | Tue Aug 24 16:11:21 EDT 1999 | Scott Cook
| Hello everyone, | We found many cylindrical diodes missing during SMT process. Could someone tell us how to prevent this problem? Is it effective to change the shape of stencil apture or reduce fan speed in reflow oven? Thanks in advance. | | Gyve
Electronics Forum | Mon Jun 14 07:41:47 EDT 1999 | Vinesh gandhi
Dear All, We are having a big debate over what is the industry standard in DPPM on the wave sodlering process. is a DPPM of about 800 satisfactory. As per our big bosses it should not be more than 50 DPPM. Is the figure realistic. We are typicall
Electronics Forum | Wed Jan 27 19:42:34 EST 1999 | parag palshikar
i am working with the noclean process and getting white residues on the bottomside of the board probably due to the wave soldering flux.i am using a no-clean solder paste and a noclean wave solder flux.The boards passed the accelerated temperature a
Electronics Forum | Thu Jan 28 08:42:43 EST 1999 | Dave F
| i am working with the noclean process and getting white residues on the bottomside of the board probably due to the | wave soldering flux.i am using a no-clean solder paste and a noclean wave solder flux.The boards passed the accelerated temperatu
Electronics Forum | Mon May 24 03:11:05 EDT 2004 | snmsmt
Hi everyone, I'm new to this Forum and still a young'n the electronics manufacturing industry so be gently on me :p I'm currently trialing different solder pastes with our small 5 stage oven and I am having wetting issues with a particular paste. C
Electronics Forum | Fri Apr 13 15:25:37 EDT 2007 | scunneen
Hello All, I am working with a Mid Sized PCBA Manufacturer as a process Engineer. We have recently moved 1 of our customers to RoHS(Silver Immersion) boards. We are seeing a lagre number of issues Blowholes, allignment issues, board quality etc. We
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