Electronics Forum | Fri Oct 22 21:23:59 EDT 1999 | se
Tombstoning is usually oven profiling, see October 14 thread below. Aperture rules are misleading. Component mix, stencil thickness, paste factors, all contribute. Also, are you making the stencil from a paste or pad layer or from a soldermask layer?
Electronics Forum | Fri Oct 22 11:37:38 EDT 1999 | Brett Gordon
Working DFM SMT issues with respect to a client's artwork together with a heavily modified solder stencil, I was able to reduce 0402 tombstoning from 80% across the board to 3%. I winged the aperture reductions, but are there any "rules" or guidelin
Electronics Forum | Thu Feb 03 13:18:03 EST 2022 | davidwallis
Hi All. I have one of these, which was bought secondhand and has never been commissioned. Does anyone out there know of a UK agent who services these, or can help with any advice regarding spares, operation characteristics etc? Thanks in advance.
Electronics Forum | Mon Nov 15 12:09:55 EST 1999 | Dave F
Steve: Continuing with Dan�s thinking, generally, "poor release" (paste hanging-up in the stencil holes) could have three main (or combination of) causes: 1 Equipment: Stencil is too thick. Specifically, your 0.006 should be OK, providing you don�
Electronics Forum | Fri Dec 09 00:19:51 EST 2016 | aqueous
Hi Dean, We are a manufacturer of cleaning equipment. I'm not sure if your machine is one of ours or another brand. Regardless, I am happy to provide assistance. In order to maximize the level of "helpfulness", it would be helpful for me to know mor
Electronics Forum | Tue Aug 11 17:36:44 EDT 2009 | dyoungquist
You are looking for a complete SMT assembly line plus possible X-Ray inspection and rework equipment. The 3 components of the SMT line are stencil printer, pick-n-place machine and reflow oven. How small are your components? 0603? 0402? What is the
Electronics Forum | Tue Nov 09 17:12:38 EST 1999 | Dave F
Steve: Addressing your points: 1 FINE PITCH APERTURES Electropolishing Laser Cut Stencils: Laser cut should not requiring polishing. Geesh, how much money do you have for stencils? ;-) Oval Shaped Apertures: Pass. What do you expect to gain f
Electronics Forum | Thu Dec 07 11:49:28 EST 2006 | K
We currently have RMA and WS soldering processes here and do batch cleaning for both. We are experiencing some capacity issues and are interested in looking at an IN-LINE aqueous wash. My experience with in-line wash is only with WS. 1. Since RMAs
Electronics Forum | Thu Oct 12 11:08:20 EDT 2000 | Fraser
Dave, Why on earth would you want to use a stepped glue stencil?. If you print slightly off contact the hight of your glue deposition will be roughly half the width of your adhesive aperture width so if you want a 10mil high deposit use a 20 mil ape
Electronics Forum | Fri Dec 08 02:40:45 EST 2006 | Mike Konrad
Hi 'K', We manufacture both batch and inline defluxing equipment so we have no axe to grind with either technology. There are pros and cons associated with both technologies under specific conditions. Batch machines are typically good cleaners but
