Electronics Forum: no and clean and flux (Page 1 of 15)

Gold plated board, with csp's and 0603 with no clean apetures

Electronics Forum | Thu Sep 26 11:44:23 EDT 2002 | abelardo

Hello everyone out there in the SMT world. I have a dilema I'm currently running a board that has 3 csp's with a .75 mm. ball pitch and .3mm ball size. And 2 qfp's-160. The stencil is 4 mils thick and I'm using a 63/37 solder paste. My reflow prof

Gold plated board, with csp's and 0603 with no clean apetures

Electronics Forum | Thu Sep 26 20:43:51 EDT 2002 | davef

"OK. If the connection doesn't look like I expect it to look, how do I know that the metallurgy is correct?" Comments are: * There are no pictures that will get you though this. * You should expect that gold that is dissolved in Pb/Sn solder to make

Solder and flux

Electronics Forum | Wed Oct 23 08:40:20 EDT 2002 | davef

Yer not making this easy. What kind of flux? If no-clean flux, what controls are you using to assure you are: * Applying the correct amount of flux? * Properly activating the flux? If water washable flux, talk to us about your cleaning methods and

Wave flux and profiling

Electronics Forum | Mon Dec 18 23:24:50 EST 2006 | grantp

Hi, Yes, I would hate to resort to cleaning, but the product must be clean. We have been using palettes to keep most of the flux off the PCB, but there is still residue around the connectors. Does anyone suggest a good no clean flux to use with le

Wave flux and profiling

Electronics Forum | Mon Dec 18 14:36:09 EST 2006 | samir

Yikes!! In-line cleaning, to clean cosmetic and benign residues (from a NO-CLEAN) flux... You sure you can't switch fluxes? Another variable with residues is the solder mask. Depending on mask type (glossy, matte, semi-gloss, or semi-matte), will

solder balls and flux

Electronics Forum | Tue Feb 29 10:14:02 EST 2000 | Robert Hartmann

My company is just getting into the flip chip packaging arena. We are putting in a prototype/small volume wire bond PBGA line. We have some questions with regard to choosing solder balls and cleaning of flux. 1) Is there a formula for the shrink

solder balls and flux

Electronics Forum | Tue Feb 29 10:14:02 EST 2000 | Robert Hartmann

My company is just getting into the flip chip packaging arena. We are putting in a prototype/small volume wire bond PBGA line. We have some questions with regard to choosing solder balls and cleaning of flux. 1) Is there a formula for the shrink

Solder and flux

Electronics Forum | Thu Oct 24 10:05:59 EDT 2002 | Yannick

I don't know the name of the flux. but is a no-clean solder paste.

Wave flux and profiling

Electronics Forum | Tue Dec 19 10:08:10 EST 2006 | George

Grant, Why don't you try a water-base flux which is No-clean, VOC-free also? I have tried the 270WR flux from AIM with good results even on lead-free process. My $0.02, George

Wave flux and profiling

Electronics Forum | Mon Dec 18 13:00:47 EST 2006 | grantp

Hi, We have a white residue, which is visible, and we would like to have the produce clean as it's a PCI card, so users see the PCB. I am wondering if we need to install a cleaning stage to the line for these kinds of products. Can anyone give som

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