Electronics Forum | Thu Nov 01 16:06:54 EST 2001 | Stefan Witte
I disagree on the dirty glass scale offset theory. If you have a dirt spot on the scale, every time the axis comes over the spot it misses counts. After a few movements it will not find the components in the feeder anymore, because the failure adds u
Electronics Forum | Tue Oct 16 09:17:10 EDT 2001 | davef
Look at "Microcanyons", Circuits Assembly magazine, December 1998. There D Pauls & T Munson describe adhesive on boards that was cured too rapidly and formed a skin that trapped volatiles and solvents. The volatiles and solvents created long voids i
Electronics Forum | Wed Oct 17 22:42:17 EDT 2001 | lenny
hello, You can edit the all the reports using crystal report software,so in your case you will be adding the field "description" to your feeder report,then while you are creating your your programe using the edit part command you can add your value/d
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 22:59:27 EDT 2001 | mantis
We have the same kind of escalation scale but with shorter times,if the operator cant fix it the technician is called,and this is where we differ slightly the technician will usually know if the problem is going to take some time fixing or wether a v
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 | Thu Oct 18 12:58:07 EDT 2001 | jacob
Hello, We recently changed a component on one of our products from a .5% 1206 resistor to a .1% resistor. I noticed that there was a greater rejection rate of the .1% resistor during placement. Apparently the thickness of the .1% resistor is less th
Electronics Forum | Sat Oct 20 09:19:24 EDT 2001 | davef
"Phased out" is not the correct term. " Not economic" might be more appropriate. Check: R&D Technical Services (Centech) 12261 Suite A Nicollet Ave S Burnsville, MN 55337 (612) 707-1931 fax 6739 sales@rdtechnicalservices Further, Graham Naisbatt
Electronics Forum | Tue Oct 23 20:12:48 EDT 2001 | dougk
Has anyone has experience using DEK's PumpPrint plastic stencils? We're starting to think about adhesive printing on THT populated boards. These stencils are thick and have undersides routed-out for clinched leads. But, they're plastic, and I'm worri
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
