Electronics Forum: electronics (Page 6544 of 7890)

Re: dispensing paste for rework

Electronics Forum | Fri Jul 16 14:02:03 EDT 1999 | Timothy O'Neill

| Earl, | | Srt makes a system called the summit 2100D. Its a relatively new product but it is designed for rework applications. The programming is simple and interfaces well with other srt products. As with any dispensing system, you have to cl

Reflow Oven Capability Study

Electronics Forum | Wed Jul 07 16:56:43 EDT 1999 | John Zizzo

Hi! I'm a process engineer attempting to do a capability study on our existing convection reflow oven - Heller 1500. It was recommended by an independent consultant to do at the very least, load testing, process ready testing, and board uniformity h

Re: 2 questions: via tenting and annular ring terminology.

Electronics Forum | Wed Jul 07 13:41:42 EDT 1999 | Dave F

snip | | If you go for plugging be sure you have a protrusion spec that you can live with. This often results in little bumps of epoxy that can interfere with component placement. For us, tenting .015 vias usually gets us about 80% coverage from

Re: Through holes in SMT pads

Electronics Forum | Wed Jul 07 14:14:03 EDT 1999 | Dave F

| Is anyone aware of some guidelines regarding through-hole in SMT pads? One of our designers wants to add through-hole leads in some SMT pads for an inductor. The size of the hole is 0.032 inches and takes-up approximately 25% of the pad area. Th

Re: Through holes in SMT pads

Electronics Forum | Thu Jul 08 12:33:52 EDT 1999 | Mike Demos

Thank you all for your replies. Thanks to your replies and backup from the IPC-SM-782A (section 3.6.3.2) and James Blankenhorn's "SMT Design Rules & Standards," the designer has agreed to provide adequate clearance between the via and the pad. I wi

Re: VOC free flux wave solder fixtures

Electronics Forum | Tue Jul 06 12:45:28 EDT 1999 | JohnW

| I've heard that use of VOC free flux with wavesolder fixtures can be challenging due to entrapment of water in the fixture. | | Is anyone out there successfully running VOC free with wave fixtures & did you experience problems? If so, how did you

Re: VOC free flux wave solder fixtures

Electronics Forum | Tue Jul 06 13:02:41 EDT 1999 | John Thorup

| | I've heard that use of VOC free flux with wavesolder fixtures can be challenging due to entrapment of water in the fixture. | | | | Is anyone out there successfully running VOC free with wave fixtures & did you experience problems? If so, how d

Re: Sub-contractor selection

Electronics Forum | Tue Jul 06 12:46:27 EDT 1999 | John Thorup

| | We are looking for some subcontractors to do surface mount | | technology boards for us. Is there anything I should pay specific | | attention when I visit the subcontractor's site? | | Thank you for any advice | | | Wolfgang has a good poi

Re: viscosity measurements

Electronics Forum | Sat Jul 10 00:57:17 EDT 1999 | Scott

| who can tell me how viscosity measurements are really effective in smt process control? what can I monitor? Is it depending from fine pitch size? | Thanks a lot. | g. d'andrea | The last place I worked used a viscosity meter, funny how little was

Re: No clean solder paste

Electronics Forum | Mon Jul 05 18:45:01 EDT 1999 | JohnW

| Is the no clean solder paste as good? We are wondering if we can elliminate the wash when we change from through hole to surface mount. | John, No clean is as good as your process, and the paste you are using. Everything I do is no clean and I h


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Nordson Electronics Solutions
Nordson Electronics Solutions

Nordson Electronics Solutions makes reliable electronics an everyday reality. Our ASYMTEK, MARCH, and SELECT brands deliver precision fluid dispensing, conformal coating, plasma treatment and selective soldering equipment.

Manufacturer

2747 Loker Ave West
Carlsbad, USA

Phone: 18002796835