Electronics Forum | Wed Aug 23 16:18:47 EDT 2000 | Dr. Ning-Cheng Lee
I presume you are referring to vibration test with fixed frequency at room temperature. One procedure describing the detailed profile is in MIL-STD-883E, Method 2005.2 (12/31/96). The approximate profile can be described as 60Hz, 20-70g, and 96 hrs t
Electronics Forum | Mon Jan 11 18:54:35 EST 1999 | Dean
| This question is directed to anyone having eperience with Sn62Pb36Ag2 solder balls for BGA's. | Have you seen anything like a rough, raisin-like surface texture after ball attach? If so, what did you do about it? | | Thanks! | I have seen this be
Electronics Forum | Mon Apr 26 08:48:03 EDT 2004 | Evtimov
Hello all! I have a problem with a vibro - fider. My IC's tavel with constant speed in , but before the end they become slower. The driving force comes by transformer in the middle area in the fider.The components move fast in that area and in the en
Electronics Forum | Thu Dec 08 22:15:46 EST 2005 | molosse21
Hi everyone, One of our customer is asking us wich one of these two components has a better resistance to vibration. Vibration can be a potential problem for them. He has the choice between a thru hole radial capacitor with near 0.400 in diameter an
Electronics Forum | Fri Nov 23 12:50:27 EST 2007 | bbarton
Do you have any input as to the vibrations seen on the end-use device? Types of device(s) that have solder joint failure? How many thermal cycles the PCB goes through before failure? There are several areas in production of the board that could be th
Electronics Forum | Wed Mar 12 07:33:40 EDT 2008 | callckq
Hi All, One PCBA failed test after went through the Shock Test(Vibration) and suspected to be BGA solder ball crack. We performed dye and pry and found PCB's pad lifted with red mark ink penetrate pad underneath, what does this mean? Can I say the
Electronics Forum | Fri Oct 08 07:26:22 EDT 2010 | walkbury
Yes... I can generally get away with it for all but the low profile stuff such as tssop packages. The plastic tubes are so shallow anyway that once you've used a scalpel to create a pick up window, you've virtually got no side-wall left. Anything b
Electronics Forum | Fri Sep 26 16:02:28 EDT 2014 | heath
Hello all, I'm curious to hear how successful others have been with vibration feeders on their pick and place machines. We have a MY12 and a major source of consternation comes from parts not shaking down to where they can be picked up. The variab
Electronics Forum | Sat Sep 27 19:47:21 EDT 2014 | cyle
Reels are 100% the best, vibration feeders should always be a back up, they are quite unreliable through no fault of their own. Say you have 1000 parts to be placed, and the cost of a reel is 100$ more than a tube, but the reel loads 10 to 1 over th
Electronics Forum | Fri Aug 14 07:52:03 EDT 2015 | mun4o
Hi all, 2 weeks ago we installing a new P&P machine - chip shooter.But , after installation proved that vibration of the new P&P arе very strong.If I use mashine to 100% of the speed the machine vibrating and after 2-3 panels moving 3-5 mm.The machin
