Electronics Forum | Wed Sep 15 05:33:04 EDT 2004 | Rob
Hi, The thing with Formula 1 is that they can afford to throw innumerable bodies at tasks (i.e. 8 people to change 4 tyres, 1 to hold a jack, 1 or 2 to refuel, 1 to hold a stop sign, 1 to hold a fire extinguisher, 1 with a stop watch, and the bloke
Electronics Forum | Fri Sep 17 23:19:07 EDT 2004 | KEN
What is the component ball co-planarity spec? I have encountered many ceramic and ASIC devices that specify 7 mil max. If your stencil is 4, 5, 6 mil you WILL eventually have an open joint. You must deposit solder greater than or equal to your cop
Electronics Forum | Fri Sep 17 23:11:30 EDT 2004 | KEN
I have an application that uses 0201 devices coupled with ceramic column grid arrays. The coplanarity of the balls is specified not to exceed 7 mils! 4 mil foil for 0201's with a selective buildup to 7mil for the ceramic. Bloody designers! Take y
Electronics Forum | Mon Oct 25 17:55:47 EDT 2004 | Mike
Circuit Science, Inc. Plymouth, MN Mike Dupont / Sale Mgr. www.circuitscience.com miked@circuitscience.com Please send me an email and we will take a look at your pcb. We have been in the PCB industry for over 30 years. 2 layer boards - 18 lay
Electronics Forum | Wed Oct 13 01:12:31 EDT 2004 | saiwong
I think forgot one most important thing. SMT is not all. In China, after the SMT process, QC, QA, casting, packing etc. It need lots of labors. I really one worker can handle 4 lines. Nokia still have two bid factory in China, Motorola has two also.
Electronics Forum | Thu Nov 11 14:40:43 EST 2004 | no gel pig fan
We worked with 3-4 revisions of the form-flex and they all had problems with stuck pins or pins that just wouldn't come out (due to leaks). The Form flex was pneumatic and hydraulic and worked well for awhile (2-3 weeks)but never seemed to last much
Electronics Forum | Mon Nov 15 07:04:05 EST 2004 | cyber_wolf
Hello all, and thanks for the responses. 1. I have changed feeders/ It's not the feeders 2. Parts are being pre-rotated 3. All other programs deleted out of machine 4. Ran parts on sticky tape/ same problem Ken : That is a very valid observation th
Electronics Forum | Sun Nov 28 03:27:03 EST 2004 | jmedernach
Hi Guy, I see them frequently. Usually, if I have voids on my BGA's, I'll have them on my passives as well as at leaded device solder joints. They run rampant through the entire assembly. For me, it's a function of my profile. I only have a 4 zon
Electronics Forum | Mon Aug 22 08:09:51 EDT 2005 | cyber_wolf
The only time I have seen any Fuji IP need calibration is if you have had a serious crash, or if an axis or camera has been removed. Make sure you don't have something else going on. For instance check these things: 1.Check nozzle vacuum 2.Make sur
Electronics Forum | Fri Dec 10 13:31:59 EST 2004 | Alan
We purchased the NXT about 4 months ago. Even though it is a new platform it has been running smooth with no hardware or major software issues. We are in a pilot factory so we don't get as much use out of it as some production facilities. Keep an