Electronics Forum | Tue Feb 01 07:50:25 EST 2000 | Jason Bentley
This all depends on the mixture of your solder. If you are using water soluable flux then it will get clean. But not alcohol based flux. As for using the ultrasonic this might be a problem I personally have never heard of someone washing a board in a
Electronics Forum | Tue Feb 01 21:48:12 EST 2000 | Dave F
Guo: You want to know: 1 Can I use water as the solvent in an ultrasonic machine to remove solder paste from PCB? Continuing from Jason�s comments: Sure you can use water as the solvent to remove solder paste from PCB, but recognize that some flu
Electronics Forum | Sat Feb 05 21:58:08 EST 2000 | Stu Leech
I agree with all of the previous comments. 1) Here are a few things to keep in mind when cleaning with water. To effectively clean, any liquid must wet the surface. By itself, water has a surface tension of 70 dynes/square cm. This is relaively hig
Electronics Forum | Mon Jan 31 14:08:26 EST 2000 | Ashok Dhawan
I have got a number of assemblies back from a customer with feedback that the solder fillet is less than 25% of chip height per IPC-Standard-610B Class 2. Most of my joints are having good wetting but fillet height does not meet min ht requirement of
Electronics Forum | Wed Feb 02 21:17:55 EST 2000 | Steve Harshbarger
Istvan, The advise from both Roni and Mike sounds right on the money. The problem is most likely that your PCB is not completely dry (the flux has not completely evaporated) in the area where these solder balls occur. You have a number of differen
Electronics Forum | Fri Jan 28 16:16:52 EST 2000 | Mike Naddra
As an end user myself, the decision weather to purchase new , refurbed or "used" is dependant upon the result I want and the technical expertise I have available to me. Used equipment from a broker typically comes with little to no waranty (Unless of
Electronics Forum | Wed Jan 26 05:02:13 EST 2000 | maddog
I am consulting for an SMD placement machine manufacturer, looking at Human Interface issues -- hardware and software. I believe strongly that usability directly affects productivity. I would appreciate any comments the community would provide regar
Electronics Forum | Wed Jan 26 10:15:04 EST 2000 | Christopher Lampron
Maurice, I have worked with several different platforms of P&P machines and have a couple of thoughts regarding features and ease of use. The Contact Systems 3 series machines are versitile and very user friendly. I contribute this to the touch scree
Electronics Forum | Wed Jan 26 12:48:56 EST 2000 | Wolfgang Busko
What does easy to use mean? From operators view: - simple input menue - precise error messages with suggestions what to check first - trustable feeders - low noise - feederchange possible without stop - automatic pickup-position alignment - safety fe
Electronics Forum | Thu Jan 27 20:32:01 EST 2000 | Dave F
Kyungman: So, your boss is trying to get you to put a wet paste inspection machine on your line after the printer. Sounds like you have a bunch of toys and someone wants to give you more!!!! Ah, the burdens some people have to live with!!! ;-) J
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