Electronics Forum | Tue Aug 22 15:34:14 EDT 2006 | Chunks
Hi Steve, What type of flux? How do you apply it? What kind of wave? Rite off the cuff, I'd say you're applying too much flux, but without knowing a little more, it's tuff to say. It could even be board related. Hate to see what WML has to say
Electronics Forum | Tue Aug 22 18:15:50 EDT 2006 | russ
okay so both the 2005 formulas from interflux are clear alchol based fluxes. Yellow res huh? In looking at the temps here, I would say you might be too hot at both preheat and solder temp. You may be burning flux. How long is dwell time over wave
Electronics Forum | Mon Oct 02 06:41:53 EDT 2006 | saaitk
We have a customer enquiry that requires PCB assemblies to be cleaned to J-STD-001 / -004 class 3. We use both water based and no clean process chemistries. No clean flux residues are not permitted and would therefore have to be cleaned. My question
Electronics Forum | Mon Oct 02 20:28:25 EDT 2006 | davef
Assuming: * Customer board has been designed to provide for cleaning under components. * Cleaning equipment is capable. In meeting J-STD-001, your current cleaning equipment should be able to clean: * Water washable fluxes. * Low residue fluxes, pro
Electronics Forum | Mon Oct 02 20:10:27 EDT 2006 | davef
Choices are: * Buying a helmet. * Using a paste with low residue flux. Where are you located that you can use Triklone N [1,1,2-trichloroethene, CAS No: 79-01-6, C2HCl3]? As a solvent replacement for Triklone, several companies offer proprietary bl
Electronics Forum | Mon Oct 30 14:27:49 EST 2006 | pjc
Not really. A new Electrovert AquaStorm 100, in-line machine, is under $60K, for straight aqueous applications. The batch type from Aqueous Tech are like $35K I believe. $120K would be for a high performance in-line machine, such as the AquaStorm 200
Electronics Forum | Mon Oct 30 21:43:08 EST 2006 | davef
So, after the repair of a BGA, you notice white reside on a nearby connector. Correct? [Sorry we're so dense. Long day.] Tell us about: * Flux class used in repair * Flux class used in original assembly Why are you baking the assembly after repair
Electronics Forum | Mon Nov 27 15:51:51 EST 2006 | barryg
HI THERE GUYS ,GALS, DOES ANYONE KNOW OF A SPEC OR TEST OF THE AFFECTS OF HIGH VOLTAGE (300-1KV)ACROSS CONNECTIONS SOLDERED WITH NO-CLEAN. COULD THE FLUX BREAKDOWN AND CAUSE A CURRENT PATH? I HAVE CHECKED THE SPECS ON OUR SOLDER AND THE TEST METHODS
Electronics Forum | Fri Dec 08 08:25:03 EST 2006 | jhaviland
Depending on the system you can program in a loop where if the board fails a contact to cycle the vacuum once or twice. it wears on the pins a little faster since you cycle 2 times (maybe more) per board but it could help increase the FPY. I know Gen
Electronics Forum | Mon Dec 18 04:11:11 EST 2006 | greg york
Probably because the flux manufacturers have deemed it necessary to increase flux volume by 20 - 25% compared to Leaded this is why more is being left over. Really not convinced of this increase in volume actually does anything. Black residue will be
