Electronics Forum: solder and problem (Page 7 of 632)

Uncoalesced solder problem in fine pitch IC pads

Electronics Forum | Thu Sep 11 11:27:41 EDT 2008 | rarnold

YES! Reflow Profile knobs have been verified.

Uncoalesced solder problem in fine pitch IC pads

Electronics Forum | Mon Sep 08 09:59:56 EDT 2008 | vladig

Here we go with another "solderability problem". How do you know the pads on the bare PCB are oxidized? Just based on its colour? If that is the root cause, then why ohter parts on the same board are fine? If you want to solve the problem, get it's

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.

problem in solderability

Electronics Forum | Mon Sep 01 02:24:10 EDT 2008 | omid_juve

we use another device with the same package but it doesn`t have any solderability problem . the things that we are hesitate on is the difference between the pin alloy in these two different packages . also i should say that in rework station it will

QFP144 soldering problem

Electronics Forum | Fri Sep 14 14:20:23 EDT 2007 | sjcdcheu

What is the surface finished of your board and what is the peak temp at your solder joint?

How does temperature and humidity effect solder paste/printing

Electronics Forum | Wed Apr 11 19:32:39 EDT 2001 | Adam

I'm trying to find information/articles describing the effects of temp and humidity on solder paste. Just recently we have gone through a change outside temperature and humdidty and have notice solderabilty problems with smt boards.

QFP144 soldering problem

Electronics Forum | Tue Sep 25 14:43:28 EDT 2007 | mun4o

Hi, we change Kester with Interflux and all it is OK.The problem was paste Regards

Gold Pads Soldering problem

Electronics Forum | Wed Dec 14 09:03:28 EST 2005 | russ

See "black pad" and determine if that's what you have.

Gold Pads Soldering problem

Electronics Forum | Fri Dec 16 07:22:18 EST 2005 | jax

Try paste flux instead.... oh yeah.. clean it as soon as it comes out of reflow.

QFP144 soldering problem

Electronics Forum | Mon Sep 10 18:04:28 EDT 2007 | slthomas

How are you attaching your thermocouples to measure the temperature of the lead/pad connection?


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