Electronics Forum | Thu Sep 12 09:12:22 EDT 2002 | mhoughton
I have printed and placed similar devices in high volume with exactly this spec for a couple of years with no problems, are you using laser cut stencils and what type of solder paste are you using? and what is the end use of the product as it may nee
Electronics Forum | Thu Nov 07 17:15:19 EST 2002 | slthomas
We have ESD safe velcro hook soled shoes for our operators. It keeps them at their machines. Seriously, everyone I've seen using it just uses heel straps and vacuums the carpet. Granted, many of them looked like they could use a shampooing, but I d
Electronics Forum | Tue Nov 19 15:08:45 EST 2002 | steve
Be careful, if you are using a water soluble chemistry then your pre-forms that are impregnated with flux may dry out prior to use. If your using a no-clean application then ther should be no worries. Aim solder out of Rhode Island is very good with
Electronics Forum | Mon Dec 02 20:53:29 EST 2002 | davef
Gerber[R] Data (File). Used in directing a photoplotter during printed circuit board and stencil artwork fabrication. Gerber Scientific Instrument Company used to be the dominant producer of the photoplotters used for "shooting" film, back when mec
Electronics Forum | Fri Dec 06 09:47:31 EST 2002 | Claude_Couture
Printing: use rigid carrier plate to hold and support your flexible PCB. tooling holes in PCB to position on the plate, two-sided tape to hold PCB in place. Oven: same carrier plate, use capton tape or clamps to hold PCB in place. I believe some in
Electronics Forum | Wed Dec 04 09:24:52 EST 2002 | jseagle
I have found that preheating the solder pallets prior to use helps cut down on the solder balling. Also, we do not cool the pallets between passes and we use a spray fluxer because a hot pallet will knock down the head on a foam fluxer. We use WS f
Electronics Forum | Mon Feb 03 14:31:19 EST 2003 | Stephen
We use a Mighty Mutt machine. Not 100% sure of spelling. It works well for us. It has a metal vaccuum tube and heated metal wires, and is grounded. I used to work for a company that used a sandwich bag sealer. That was not good at all. If you buy
Electronics Forum | Tue Feb 11 13:12:25 EST 2003 | Jim Mills
Use a PCB fab house that is capable of "Conductive Via Filling" is the way to do it right. A conductive epoxy is used to fill the drilled via PRIOR to final plating. After final plating, the surface of the "Filled Via" will appear to be the same as t
Electronics Forum | Tue Feb 25 20:10:33 EST 2003 | davef
First, there is no standard. Next, on one hand, most BGA cost a lot of money. On the other hand, choosing to use reballed BGA in products for shipment depends on how well you expect to meet your customers' expectations about product reliability wit
Electronics Forum | Wed Mar 05 09:34:32 EST 2003 | HAROLD LICHT
WE HAVE A NEED TO BOND SOME LOW TEMPERATURE LED'S TO A THIN CIRCUIT BOARD LAMINATED TO A HEAT SINK. HAS ANYONE USED AN ULTRASONIC WELDER TO WELD COPPER GUL WING LEADS TO A COPPER PAD USING ULTRASONICS? IF NOT HAS ANYONE USED RESISTANCE SPOT WELDING
