Electronics Forum | Fri Aug 24 18:00:23 EDT 2001 | Marshall
Hi, I understand that solder joint shape and strentgth is dictated by land dimension / geometries. i have a pcb with 4-5 different land dimensions. My queries are: a) since all of them were tested, what will be the effect if I leave it that way whi
Electronics Forum | Mon Aug 27 11:01:05 EDT 2001 | lloyd
Hi, I'm currently looking into changing our current supplier of SMD adhesive. My problem is how to effectivly evaluate any new samples I recieve. I'ved looked through the IPC standards and understand the concepts in testing them, but in practical te
Electronics Forum | Wed Sep 05 16:04:47 EDT 2001 | Kelvin
Dear All, I am looking for a good wetting balance solderability tester. I hope this piece of equipment is maintence free, small dimension and robust. The most important is this equipment should comply with most of the industry test standard, like IP
Electronics Forum | Fri Nov 09 14:34:30 EST 2001 | vickt
As mentioned in other replies, the Universal GSM has expanded capabilities....As for the UIC HSP's....the 4796L can handle an 18" x 20" panel as standard, and has options to go up to 18" x 24.5". Did I mention that the 4796L places at a 0.10 tact ti
Electronics Forum | Wed Oct 17 18:42:37 EDT 2001 | scott
Any processes that I need to be aware of that differs from standard FR4 during reflow and wave soldering? I've read one of the problems is the thermal expansion of teflon is quite different from copper. I've also seen a "blurb" where teflon absor
Electronics Forum | Wed Oct 17 12:46:55 EDT 2001 | rholland
Does anyone know of an IPC standard callout for testing traces and there connection to pads or vias of manufactured PCB's? I believe it should be on the Fab drawing. At this time we ask for the test on our P.O.'s. Test Voltage (XX)V Single Sides Te
Electronics Forum | Wed Oct 24 09:11:54 EDT 2001 | John S
Does anyone have any guidelines or IPC standard they can suggest for specifying the type of solder mask used? We've started having problems with poor masking, and when I asked our designers what they use as a specification, they can't give an answer
Electronics Forum | Sat Nov 03 05:41:07 EST 2001 | Ben
Hi Could somesomeone help to let me know can bare PCB (FR4) is damaged by thermal shock? Can difference of CTE from copper or solder to FR4 damage PCB from apply heat too fast? Any specification or standard can i refer? Thank you Ben
Electronics Forum | Wed Dec 12 08:45:37 EST 2001 | zanolli
Dave, In response to your question on flux and heat application; the flux is already incorporated into the solder deposit and the connector usually solders in a standard convection oven profile. If you need more details you can contact me offline
Electronics Forum | Wed Dec 12 11:22:52 EST 2001 | davef
WOW, a 300ml syringe!!!! Now, that is one BIG-assed syringe. [I assume you mean �30ml�] Thoughts are: * Buy through distribution, for instance http://www.loctite.com/distributor/ * Buy your cases in smaller syringes. 10 & 30ml syringes are standar
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