Electronics Forum: ultrasonic and stencil and cleaner (Page 2 of 4)

Stencil and board Ultrasonic cleaner

Electronics Forum | Wed Feb 01 13:46:05 EST 2006 | Chunks

Sounds like a epididymis! It depends on your paste chemistry. You can't just slap any old saponifier in there. Most water based cleaners evaporate the water and you have to remove the dried paste. It's a bit messy, maybe that's why your's is over

Stencil and board Ultrasonic cleaner

Electronics Forum | Wed Feb 01 12:20:16 EST 2006 | cvoyles

Hi Bruno, I am an equipment reseller in business since 1994. I have a Smart Sonic MG3000 ultra sonic stencil cleaner in inventory. It is a stainless steel model with Delta Sonics brand ultra sonic generator. It is the guillotine type that raises a

Cleaning Machine and Chemistry

Electronics Forum | Mon Feb 19 11:36:39 EST 2001 | billschreiber

Hello Mark, I wish it were that simple so I could direct you to a particular manufacturer and stencil cleaner model. Unfortunately, there are several issues complicating the process of cleaning all these applications in one machine. First and fore

Lead/Lead Free In-Line Wash and UT cleaners

Electronics Forum | Mon Oct 03 12:11:18 EDT 2005 | PWH

Soon we will be manufacturing board assemblies on our SMT lines that will utilize both lead and lead free water soluable solder pastes. I have read some discussion about change-over from lead to lead-free jobs related to machine cleanliness, etc. H

Stencil cleanliness and inspection

Electronics Forum | Thu Jun 07 15:37:32 EDT 2001 | Claude_Couture

Kerryn, It's the first time I hear someone who needs an automated inspection machine to check the cleanliness of stencils. Why not improve on the cleaning method itself. I use ultrasonic batch cleaner. It takes 3 minutes to clean a stencil, 2 minutes

RoHS and stencils

Electronics Forum | Fri Mar 03 11:56:51 EST 2006 | Brad

We have a customer that is transitioning to RoHS compliant assemblies. Their layouts are not changing from the old boards to the compliant ones so the stencils will remain unchanged. They are going through a transition phase where both will be buil

MPM Accuflex problems and errors

Electronics Forum | Tue Mar 30 06:27:22 EDT 2010 | ristikas

It happens on the middle of the stecil cleaning. The camera and the cleaner will stay under stencil in half way back. Then machine asking the initate the motors. If to press initate then the pcb stopper will hit the rails. Usually we move camera and

No-Clean flux residue and RF application

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

0402 tombstoning and dewetting on QFP256 trade-off

Electronics Forum | Fri Mar 06 10:46:35 EST 2009 | davef

First, we agree with Loco that your QFP is nonwetting, rather than dewetting. Your sceen-shots look like ol' timey SnPb paste recipes. Turn-up the heaterometer dial. Second, on nitrogen: * We kinda think your O2 needs to be around 100ppm with 99.99%

Re: Cracking Capacitors and Solder Balls

Electronics Forum | Tue Jun 09 07:35:23 EDT 1998 | Steve Gregory

Hi there Gary, Your solder ball problem is very similar the problem I experienced, but I was using a water soluble paste at the time. It started by inspectors telling me that they were seeing cold solder on some SIMM's that we had built regularly. W

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