Electronics Forum | Wed Aug 05 14:18:47 EDT 2020 | dwl
Anything with metal in it can be recycled; PCBs, wire, lead trimmings, used solder paste, etc. There are companies that specialize in this sort of waste. Typically they will provide you with containers and once you have enough waste, they will come p
Electronics Forum | Sun Nov 07 10:54:21 EST 1999 | Steve Thomas
We're looking at redesigning our stencils to facilitate better (well, it's pretty much non-existant, so any improvement is a big leap) release from fine pitch apertures. Currently we have perpendicular walled laser cut apertures. We'll be having
Electronics Forum | Wed Aug 19 08:00:55 EDT 1998 | Earl Moon
| Hi there, | I'm actually facing a lot of trouble with PCB's presenting up to 3mm of bow /twist at reception i.e. before assembly. The PCB size is 220 by 230mm. The boards are to be assembeled SMD double sides with 05.mm pitch on both sides. In orde
Electronics Forum | Mon Nov 27 17:47:23 EST 2000 | Dave F
Gyver: Lemme take a wack [if you�ll excuse the expression, given direction of the later discussion] at your questions. Q1. Will the baking of BGA or PCB cause more oxidation before the SMT process? A1. It certainly will not cause less oxidation,
Electronics Forum | Fri Mar 24 11:12:06 EST 2006 | patrickbruneel
You�re a good man Rob and a good patriot, you defend your governments decisions even if they're wrong. Isn't the WEEE directive aimed at preventing electronics ending up in a landfill? This immediately takes away the leaching arguments and is a great
Electronics Forum | Fri Mar 24 05:12:17 EST 2006 | Rob
You feeling OK Larry, I'm almost agreeing with you! Right, ROHS & WEEE are designed so that we don't throw away huge amounts of electronic waste into landfill that then pollutes our drinking water with Lead, polybromides, cadmium, mercury etc, which
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 | Mon May 16 22:59:40 EDT 2005 | davef
We believe your problem is caused by the mismatch in CTE of the material ised in your BGA. In fact, this "potato chipping" [where the corners curl-up] is present in all BGA. The issue is the matter of degree. [Mismatching CTE is how old thermostats
Electronics Forum | Sat Feb 09 17:33:30 EST 2002 | George Verboven
For more info about Metal Stencil Overview. also look at: http://www.tkb-4u.com/articles/printing/metalstenciloverview/metalstenciloverview.php
Electronics Forum | Mon Mar 28 09:56:36 EST 2005 | n wolford
We have a granite table out on our production floor. We use the table along with metal parallel bars and a height gauge to measure component height. Some of these boards have components on them that may be ESD sensitive. Does anyone have experience w