Electronics Forum | Fri Mar 30 18:24:12 EST 2001 | davef
There is no test. Beyond the issues that you mentioned that affect shear, an article published in a recent [1/01] "Journal Of Surface Mount Technology" documents that shear is also dependent on the rate of shear. You may be able to contact the auth
Electronics Forum | Tue Jul 03 08:14:49 EDT 2001 | Stefan Witte
If you hold your board sideways in a 90 degree angle you apply a force of 1 g to your components. 1 g translates into 32 ft / sec. square. This is not too much acceleration for fearless roller coaster drivers but Melf�s and Tantalums can fall off at
Electronics Forum | Mon Jul 02 20:13:41 EDT 2001 | davef
We agree with Wolfgang. Adding points along his line of reasoning: * Also consider placed component prescience. Sometimes, a mis-pick results in paste on the nozzle, which leads to the next component being stuck on the nozzle and not placed, which
Electronics Forum | Sat May 19 04:09:17 EDT 2012 | gme
We are mounting 3528 package LEds with pick & place machine.The problem is , nozzle picks up the LED , but it stick to the nozzle & not placed. Then it gives error in the next cycle. Can anybody suggest the solution?
Electronics Forum | Sun May 20 00:11:45 EDT 2012 | kiss
We are mounting 3528 package LEds with pick & > place machine.The problem is , nozzle picks up > the LED , but it stick to the nozzle & not > placed. Then it gives error in the next cycle. > Can anybody suggest the solution? Please advise on mo
Electronics Forum | Fri Apr 20 13:04:51 EDT 2018 | dleeper
Have you tried using a larger nozzle? If the selected nozzle is too small, it won't provide enough force to hold the part in place. What kind of part are you having trouble with?
Electronics Forum | Mon May 21 09:04:15 EDT 2012 | cbeneat
We've had the same issue on our Panasonic CM machines with Cree XP type LEDs. Count on tools makes a urethane tip nozzle that we are using which eliminates the sticking, our concern with these is durability. Nozzle supply company makes a steel Teflo
Electronics Forum | Mon May 21 08:51:14 EDT 2012 | fredc
We have been seeing this in the nozzles we have made. We will building all new LED nozzles out of teflon where physically possible. Many of the new Cree LED recomendations are for teflon nozzles. In some that teflon was not recomended teflon was the
Electronics Forum | Mon May 21 10:16:20 EDT 2012 | swag
We've bought nozzles from Count On Tools with good results. I noticed they have a bunch of special nozzles just for LED's so you might check them out.
Electronics Forum | Mon May 21 05:21:21 EDT 2012 | eniac
Yes, I had the same problem. I ordered another nozzles, with dimension similar to dimension of lens, increase air pressure in mounter and increase place time.
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