Electronics Forum: bga solder joints (Page 1 of 463)

mirco bga stencil opening

Electronics Forum | Wed Oct 02 15:08:37 EDT 2002 | Eric

See Fiske first line. I'd bet You are bending or catching the assembly in the ICT. How many probes at 8OZ each? do you use on that ICT? 800 probes = 400lbs. See "Flexure induced failure of BGA solder joints" by Compaq Houston TX

Xray Analysis of non-BGA solder joints

Electronics Forum | Thu Mar 16 17:33:40 EDT 2017 | dontfeedphils

Voiding, fracturing, barrel-fill, I'm sure there are some I'm missing.

Xray Analysis of non-BGA solder joints

Electronics Forum | Thu Mar 16 16:23:12 EDT 2017 | u4bga

I'm wondering what can we learn from an X-Ray analysis of solder joints - specifically, non-BGA joints (through-hole & SMT) joints.

mirco bga stencil opening

Electronics Forum | Thu Sep 12 10:45:29 EDT 2002 | pbarton

We have used a laser cut stencil 0.15mm (0.006") thick with 0.3mm (0.012") square apertures radiused in the corners 0.06mm (0.0025") to aid paste release. This approach with the (type 3) paste we use has proven successful on thousands of devices plac

underfilling of bga

Electronics Forum | Tue Jul 14 18:42:41 EDT 2009 | anndi

1smtdude, I interested in your explaination of > re-work an underfill part. You mention the > material can be heated to a plastic state to > become vicious... do you know usually what range > is the temperate? (guess it can depend on the > type

BGA solder joints versus mechanical stresses

Electronics Forum | Thu Sep 02 15:50:30 EDT 1999 | R Scheller

Has anyone done or seen any studies done documenting what may be the affect of hardware such as screws in the parimeter vicinity of BGAs on a circuit board? What I'm really after is anything describing how close a screw/washer/nut combination which

Xray Analysis of non-BGA solder joints

Electronics Forum | Thu Mar 23 02:10:59 EDT 2017 | alexeis

Hi, Based on our experience, you can collect X-Ray analysis of solder joints and calculate values of SPC (such as PP/PPK and GR&R). Now, you can find, based on this calculated values, if your production is good or not. Also, this helps you to detect

Re: BGA solder joints versus mechanical stresses

Electronics Forum | Thu Sep 02 16:06:33 EDT 1999 | Earl Moon

Has anyone done or seen any studies done documenting what may be the affect of hardware such as screws in the parimeter vicinity of BGAs on a circuit board? What I'm really after is anything describing how close a screw/washer/nut combination

Re: BGA solder joints versus mechanical stresses

Electronics Forum | Thu Sep 02 16:37:23 EDT 1999 | R Scheller

Has anyone done or seen any studies done documenting what may be the affect of hardware such as screws in the parimeter vicinity of BGAs on a circuit board? What I'm really after is anything describing how close a screw/washer/nut combin

Re: BGA solder joints versus mechanical stresses

Electronics Forum | Thu Sep 02 16:52:31 EDT 1999 | Earl Moon

Has anyone done or seen any studies done documenting what may be the affect of hardware such as screws in the parimeter vicinity of BGAs on a circuit board? What I'm really after is anything describing how close a screw/washer/nut

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