Electronics Forum: electronics (Page 2731 of 7890)

Uncoalesced solder problem in fine pitch IC pads

Electronics Forum | Wed Sep 10 09:34:25 EDT 2008 | realchunks

In the real world where I work, I turn knobs (really key boards, mouse, or touch screens) every day to solve solder related problems. I can tell you exactly why I have to for each one I adjust.

Uncoalesced solder problem in fine pitch IC pads

Electronics Forum | Wed Sep 10 12:39:58 EDT 2008 | patrickbruneel

Am glad we got that straight There is a big difference between the �real world� and the �ideal world�.

Uncoalesced solder problem in fine pitch IC pads

Electronics Forum | Wed Sep 10 12:43:13 EDT 2008 | patrickbruneel

Dave, I don't think you will get a response in the mean time he found the right knobs to fix the problem. Sorry couldn't resist

Uncoalesced solder problem in fine pitch IC pads

Electronics Forum | Wed Sep 10 15:31:11 EDT 2008 | gregoryyork

Should have sent them in for Xray/microsection Steve that sorts out the QA guys over here

Uncoalesced solder problem in fine pitch IC pads

Electronics Forum | Wed Sep 10 15:54:57 EDT 2008 | slthomas

"When we solving a problem we have to be absolutely sure it's really solved." Conversely, it's always good to return things back to the way they were when you conclude that THAT knob turn didn't solve the problem.

Uncoalesced solder problem in fine pitch IC pads

Electronics Forum | Wed Sep 10 16:09:45 EDT 2008 | vladig

To me it speaks about teh quality of the engineers. I[ve seen both types, though Vlad

Uncoalesced solder problem in fine pitch IC pads

Electronics Forum | Thu Sep 11 10:18:15 EDT 2008 | gregoryyork

Sorry all I know is that storing the paste Tip down the flux will run to the tip of the cartridge so will be runny initially then dry up as you use the cartridge. Unless the Rheopump mixes it before application

Uncoalesced solder problem in fine pitch IC pads

Electronics Forum | Thu Sep 11 10:25:51 EDT 2008 | rarnold

Flux is less dense than metal so it 'floats' to the back NOT the tip when the tubes are stored tip down.

Uncoalesced solder problem in fine pitch IC pads

Electronics Forum | Thu Sep 11 11:11:31 EDT 2008 | gregoryyork

Yes sorry you are right so you have answered your own question anyway. Dry to start runny at the end

Uncoalesced solder problem in fine pitch IC pads

Electronics Forum | Thu Sep 11 12:38:45 EDT 2008 | vladig

I'm curious how many knobs have left to be turn? :-) Isn't time an issue in a production environment? Vlad


electronics searches for Companies, Equipment, Machines, Suppliers & Information

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

Selective soldering solutions with Jade soldering machine

Stencil Printing 101 Training Course
Pillarhouse USA for Selective Soldering Needs

Wave Soldering 101 Training Course
Equipment Auction - Eagle Comtronics: Low-Use Electronic Assembly & Machining Facility 2019 Europlacer iineo + Placement Machine  Test & Inspection: Agilent | Tektronix | Mantis Machine Shop: Haas VF3 | Haas SL-20 | Mult. Lathes

World's Best Reflow Oven Customizable for Unique Applications