Electronics Forum | Mon Apr 26 17:09:05 EDT 2021 | kwalker
Sounds like you are getting oxidation of the nickel under the gold layer. If the gold is porous it will allow the nickel underneath to oxidize, which is the dark dull layer you are seeing, and why when you apply flux it solders just fine - the flux i
Electronics Forum | Wed Mar 28 12:46:50 EDT 2007 | realchunks
Rob is right, you do need to dispense paste or pre-forms when using a laser. Although the Panasonic Soft Beam has a wire despenser. I've seen laser soldering and it does work on smaller stuff. Doesn't work well on connectors even after preheating.
Electronics Forum | Tue Nov 11 09:19:17 EST 2008 | davef
By the way you asked the question, we assume that by "reballing" you mean bumping, we should be able to figure that out: * Volume of the ball = ( pi*d^�)/6 = [355/113] *0.6*0.6*0.6]/6 = 0.11mm^3 * Volume of solder required = 2*volume of ball = 2*0.11
Electronics Forum | Mon Aug 28 12:44:23 EDT 2006 | actech
WE have been running a leaded product for a few years and while the product is exempt from PB free regulations the components have been comming in lead free reciently and this caused little or no change in the process and or product, However! the Boa
Electronics Forum | Mon Apr 29 14:36:26 EDT 2013 | bandjwet
I am trying to determine who out there is reballing devices below 0.4mm in pitch. We have been reballing as small as a 4-balled 0.15mm 4 mil ball diameter area array devices using an adhesive-backed reballing preform. 1. For such small devices we h
Electronics Forum | Tue Sep 15 12:27:59 EDT 2015 | sumote
The key to longevity in any automated soldering machine is in the preventative maintenance. If the machine has had regular maintenance preformed on it, your job will be that much easier. The 1st thing I would do is to either throw out the solder t
Electronics Forum | Sun Oct 11 00:23:26 EDT 1998 | MIKE
| Came a cross an interseting observation/question. | I'll need to filter additional information and specifics to those whom may be able to assist me. But for now; | | I use a water soluble base organic flux manufactured by Kester (the exact soluti
Electronics Forum | Mon Oct 12 20:51:14 EDT 1998 | Eric
| | Came a cross an interseting observation/question. | | I'll need to filter additional information and specifics to those whom may be able to assist me. But for now; | | | | I use a water soluble base organic flux manufactured by Kester (the exac
Electronics Forum | Mon Aug 28 12:41:35 EDT 2000 | JAX
MoonMan, I'll take a crack at the list. Feel free to answer the ones I don't! 1. Solderability is a parameter which indicates how well a component can be soldered. As far as Solder Termination Coatings go, here are some up�s and down�s of a few. Ha
Electronics Forum | Tue Aug 24 22:32:18 EDT 2004 | pdeuel
We have a Soltec Deltawave with single nozzle spray fluxer, chipwave, and waveform. It preforms well. I am not fimilar with Electrovert models so I can only give you some of the pitch I got when I went back East for training. Features I like about th
