Electronics Forum | Mon Aug 19 13:32:54 EDT 2019 | aqueous
ROSE testing a post-reflow assembly which has been reflowed using no-clean flux may not yield information that is helpful. No-clean flux technology works by encapsulating the flux's activators and other chemical constitutes that would be harmful if l
Electronics Forum | Wed Mar 12 08:03:30 EST 2003 | Surachai
Hi all Pls. help advise. Our board use RMA solder paste (Pb-free Sn96.5/Ag3.0/Cu0.5). Can we use No-clean paste flux (Delta 670S1) in rework process? If it can not be used, why?. Thanks very much for your advice. Surachai
Electronics Forum | Fri Jan 28 01:56:32 EST 2005 | Chua
Hi, I could like to find out what are the things need to look out if I'm doing a new SMT solder paste ( water soluble & no-clean ) evaluation. And also flux ( spray type ) for wave-solder ( water soluble & no-clean ). Appreciate for all the input..
Electronics Forum | Tue Aug 30 15:05:23 EDT 2005 | Shean Dalton
Dear Ing, Have you analyzed why some RF device aren't operational after washing? An assumption is that failures are related to the ultrasonic energy applied. Other possibilities are for poor rinsing, poor drying, inadequate washing on those failed
Electronics Forum | Sat Feb 05 09:08:18 EST 2000 | Dave F
Casimir: Let me expand on something that I said in my response to your thread on ionic testing. Generally, no-clean people don�t use ROSE testing as part of their process control, because the ROSE test is essentially washing your board in DI/IPA �
Electronics Forum | Tue Aug 30 10:46:27 EDT 2005 | lyrtech
Hi, I curently have an interesting challenge. But I don't have all the knowledge to solve it. One of our boards is used in RF applications. We noticed that the No-Clean flux residue makes interferences in the RF signal. Removing the flux residue so
Electronics Forum | Mon Feb 02 11:57:39 EST 2009 | allwave
Hello everybody, We are running a product through wave solder process using three different PCB suppliers. I have noticed that you can see more flux residues (water-based, No-clean flux) on one supplier than on the other two. All three PCBs run unde
Electronics Forum | Mon Sep 23 12:59:12 EDT 2013 | pauldavis4
New pcba supplier sent us first article pcbas (SMT, Wave & hand solder operations) that failed our testing due to no-clean flux residues found under ICs and around passive capacitors. Second lot came in and had 100% pass yield, but we still see a cl
Electronics Forum | Mon Feb 07 13:22:23 EST 2000 | Dave F
Brian: SMTnet has a "Terms & Definitions" section in the "Library." OA Flux. Flux, Organic Acid. A water soluble flux. Good luck Dave F
Electronics Forum | Thu Mar 17 22:14:42 EST 2005 | Chua
Hi Davef, Thanks for your advise...... We are running no-clean process. If there is white residues after few days.....is it cause by those excess flux. Thanks
