Electronics Forum: contains (Page 65 of 81)

Effective Part Numbering System Used For Contract MFG. Co

Electronics Forum | Thu Jul 03 09:12:08 EDT 2008 | andrzej

Hi, if you do only contract services I`d advice own part numbering. All I can say is just try to create each cathegories which will contain other cathegories and so on. Applying this system will make some order in your stock. For instance : RETR020

Fifo of Solder Paste

Electronics Forum | Tue Sep 30 14:14:17 EDT 2008 | ck_the_flip

I've done it 3 different ways in my career (3 different places): 1.) Process Engineering was responsible for solder paste inventory (as well as all other process materials). That was a bad situation due to the blame factor. 2.) TOOL-CRIB control

COB and Plating

Electronics Forum | Tue Oct 07 12:35:10 EDT 2008 | andy_pal

Hi All, I am using COB on my DOUBLE SIDED PCB. lastly we used Eletrolytic Ni / Flash Gold Plating. Our Boards vias Failed the UL corrosion Test. we did some cross-section analysis and found 10.75 �m of Nickel and 0.022 um of Gold and as the Process

Barrel fill with Pb Free Wave Solder

Electronics Forum | Wed Dec 10 08:30:20 EST 2008 | rgduval

Are you using no-clean solder, or just no clean flux? If you're using a solder with WS flux in the core, and a no-clean flux; we'd suggest switching to a WS flux to help during the soldering. If you are using a no-clean solder/flux combination, you

What will happen if a sloder paste is used after 24hours

Electronics Forum | Sun Jan 18 09:20:26 EST 2009 | davef

We're not sure of the condition of your solder paste. So, afte 24 hours, if it's: * Unused, in a reclosed container, maybe a week of life depending on the environment * Used, scrap A simple coalescence test can quickly determine the condition of sol

Dymax vs Humiseal Urethane Confomals.... Anyone?

Electronics Forum | Thu Feb 12 15:32:15 EST 2009 | gtemkin

A few other data points to consider. My experience working with Dymax 984LVF material was that its UV cure must be initiated immediately after coating, otherwise is surface will remain tacky forever, something like a post-it note tackiness, which wi

High complex board manufacturing

Electronics Forum | Mon Mar 02 04:20:27 EST 2009 | emmanueldavid

Glossy/Matte & Plating). 2. Select Solder Paste according to Your Customer or In-House Specifications which is compatible for expected Process. 3. Use Chemical Etch / Electro Polished Stencil with proper Aspect Ratios (AR=>1.5) & Area Ratios(ArR=>0.6

Masking with hight temp non silicone tape before wave

Electronics Forum | Tue Feb 17 15:24:17 EST 2009 | glynnhamer

I know this is going to sound rather sad, but we have been using a Capton tape for years that contains silicone to mask large components as they go over the wave, as well as large plated holes on the pcb. It was handed down for years as accepted prac

BGA: reworking BGAs, testing and inspection

Electronics Forum | Fri Feb 12 11:45:14 EST 2010 | ppcbs

Greetings, > > We are looking to purchase > equipment to rework / repair our circuit boards > with BGAs. Our newer boards are starting to have > more and more BGAs. > > Is there any information > that "ranks" BGA rework stations? - a kind of a

Implementing AOI

Electronics Forum | Wed Mar 03 14:16:59 EST 2010 | davef

First, we expect that your equipment supplier would help you with this. Then again with lots of used equipment flying around, some of the basic stuff often gets pushed to the back of the bus. Second, here is a clip and paste on the basics of equipm

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