Electronics Forum: solder and a (Page 1391 of 1724)

ICT testing to improve yields

Electronics Forum | Mon Aug 27 10:23:41 EDT 2012 | cobham1

I need to clarify something for everyone. The end customer is the Military. Our customers are military suppliers who do in fact have quality systems in place. When we build the product we end up potting the unit so the customer never looks at the ele

Problems with diode during wave soldering

Electronics Forum | Fri Sep 14 06:12:41 EDT 2012 | mbnetto

Hi Arturo. Thanks for you reply. The board is being loading so that the wave bath touch the 2 pads at the same time... I increased the chip wave in a maximum accepted level... One more rpm on the pump the wave sill overflow the board... Thanks...

PCB contamination with NC Flux after Wave Solder

Electronics Forum | Tue Oct 23 10:41:36 EDT 2012 | blnorman

Ideally first you need to analyze the residue to see what it is. We had a customer with white residues after wave and elemental analysis revealed tin.

Selective Solder machines

Electronics Forum | Thu Nov 01 14:02:57 EDT 2012 | williamaxler

I have used the Versaflow 40/50 which is the model before the 3. The machine is a very good machine, the electro magnetic pumps work well and do not cause alot of dross.

Selective Solder machines

Electronics Forum | Tue Nov 06 10:41:35 EST 2012 | PB

We own two KISS 305 machines from ACE. Extremely happy with the machine. More so, with thier support. The support is the best from any vendor I deal with which is a critical part of our operations. Another thing is thier continuing R & D work. They

Removing extra gold bleeding from pads

Electronics Forum | Tue Jan 15 10:35:08 EST 2013 | boriskilk

We would agree with Pete B about both the under etching as a possible issue and you will not be able to remove this gold. Another possibility is the solder mask (plating resist) hasn't been taken right to the edge of the pad.

Black stain... what causes it?

Electronics Forum | Thu Feb 14 17:40:34 EST 2013 | jorge_quijano

PCB Supplier made an EDX anaysis, the found a chemical trapped in the holes, and some burnt burrs, according to what they say this stains are over the solder mask & silk, so they do not affect functionality.

Referee Call on Solder Balls

Electronics Forum | Thu Jan 31 15:31:00 EST 2013 | rjohnston58

Are the conditions (Bullets) under the IPC Acceptable and Defect sections "ANDs" or "ORs"? In other words, does every condition under a section must be meet to be Acceptable/Defect or meeting any one condition suffices?

Small apperture release from stencil

Electronics Forum | Mon Feb 18 12:09:17 EST 2013 | pbarton

What type of flux material does your solder paste have? I have seen difficulties when attempting to print small apertures with water washable and rosin types. Do you get a good first print and then have problems or is it the same from the start?

Solder Pot Draining

Electronics Forum | Fri Sep 20 08:34:30 EDT 2013 | island2013

We've done the same as what Woodsmt has suggested. Bread pans and a ladle. Slow going but safe. We did not have to add anything to the pans to prevent sticking. Woodsmt, did you have to worry about the pot heaters over heating while draining?


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