Electronics Forum | Tue Oct 10 12:56:15 EDT 2000 | Ken Van ZIll
I agree that homplate is a good design, but also this could be caused by the stencil thickness and aperture size, if you are at 7-9 mils thick stencil and a 1:1 ratio on aperture size then 2 things i know of will happen, one a squishing out of past o
Electronics Forum | Tue Aug 25 16:28:11 EDT 1998 | Al Knudson
Hello, Our PWB supplier has requested that a change in the laminate material to reduce the incidence of pad lifting. The standard laminate materials (Polyclad PCL-FR-226 with a glass transition temperature of 135 C) have greater z-axis thermal expan
Electronics Forum | Mon Jan 12 04:28:05 EST 2009 | sachu_70
What is your alloy composition? Although your solder paste may have lower melting point, what about the alloy / metal used for plating solder lands on PCB and component termination? In most cases, there is no reliable joint as such solder may not com
Electronics Forum | Fri Sep 17 13:51:43 EDT 2004 | huib
We know from experiments that the structure of Sn can be manipulatedby means revese pulse-plating. This means alayer with less pits and thus a lower mminimum thickness is needed. www.ppcs.nu
Electronics Forum | Tue Nov 01 18:00:07 EST 2005 | PWH
The front nozzle plate arm had a build-up of grease and material on the roller plate that is closest to the linear bearing. This material caused the nozzle plate to be lower than normal; therefore it was not able to push the nozzle all the way to th
Electronics Forum | Wed Jun 17 01:02:16 EDT 2015 | armandogomez
Hello Had a similar problem way back with the hydra, first go to the service program manually activate the hydra camera then move the Xwagon to place the hydra ref plate over the hydra camera and check first if the camera works, second the image you
Electronics Forum | Sat Aug 23 08:43:32 EDT 2008 | davef
Ugh, there are more reasons that immersion silver [IAg] to go yellowish than pigs at the county fair. That aside, sulphur is one of the reasons, as you say. The sulphur can be from a variety of sources, such as: * Pollution in the air * Ill advised p
Electronics Forum | Tue May 08 09:50:19 EDT 2007 | patrickbruneel
Hi Loco, Good point!! The good old glass plate works just fine as long as the conveyor or carriers have L shaped fingers. A glass plate is usually about a � inch thick (a lot thicker than the actual board). With L shaped fingers the bottom of the gl
Electronics Forum | Fri Dec 01 14:40:02 EST 2017 | emeto
Very interesting pictures. It shows paste height of 200um - which is at lest 6mil stencil deposit. That on the other hand posts another question. Can you measure the ground pad level in relation to the solder mask level with the SPI? I had assemblies
Electronics Forum | Mon May 13 03:01:23 EDT 2019 | peterchan
Hello, sir. We are a SMT equipment manufacturer from China. We have a hot-press soldering machine that can change your current situation of manual soldering on PCB board. In addition, we have a better reflow oven, the upper and lower two cold tempe
