Electronics Forum | Fri Feb 21 20:24:09 EST 2003 | MA/NY DDave
Hi I don't have some of the names in front of me yet check out on the web anyone related to the EMPF center formerly out of Indianapolis, IN. Most these guys did not move East. Chicago has a couple of shows like SMTA and another that several of the
Electronics Forum | Wed Feb 26 15:26:44 EST 2003 | MA/NY DDave
What object am I cleaning 2>What chemicals/deposits am I removing (Chemistry?? 3>What is the process my machine uses. Now if Water Based works than you are OK from a cleaning aspect. The only problem as Mike noted, at least to my reading, is what ca
Electronics Forum | Tue Mar 04 14:38:57 EST 2003 | caldon
I am doing some work for a company that does it's own Manufacturing. They want to make their services available to the out side world. To do this they want to bring in a sales engineer as an Independent Contractor. 100% Commission and no Benefits. Wh
Electronics Forum | Tue Mar 11 12:43:27 EST 2003 | MA/NY DDave
Hey Frank, We got lucky. An article just appeared in one of our industry's magazines. Now you still have to read these articles carefully since the proponents sell the equipment yet it does support both opinions. Except it says (before PnP) and (p
Electronics Forum | Fri Mar 21 20:21:41 EST 2003 | Grant
Hi, I can verify that, and we have done 2 or more reflows with prototypes, using vapor phase reflow, and because there is no oxygen, the result is good, and you cannot tell the difference between the first reflow, and the 3rd. We are getting a vap
Electronics Forum | Wed Mar 26 17:09:52 EST 2003 | Jos�
For the Resistor Network Array SMT 0402- 8 pads I'm using a Stencil 5 mils Th. with the next appertures : Corners-biggers pads: 24 x 12 mils Center pads : 9 x 24 mils This Appertures are working excelent for the RN's that his appertures are parallel
Electronics Forum | Tue Apr 01 11:18:47 EST 2003 | cyber_wolf
Is anyone out there successfully screen-printing SMD adhesive on an 0402 layout? We have successfully done 0603 and larger, but the deposition consistency on the 0402's is just not there. We don't always get enough epoxy on the board. We have tried a
Electronics Forum | Thu Apr 10 09:28:14 EDT 2003 | chrissieneale
Thanks for your replies guys, there's some good info there. Dave, answers to your questions: The stencil was initially a big problem as with the Egineering Model's (EM's) and Engineering Qualifing model (EQM's) we kept getting short circuits due to
Electronics Forum | Mon Apr 14 12:40:28 EDT 2003 | jimcorr
They are letting you go on holiday with these problems outstanding??!! But seriously after reading about your problems I think that any further work is basically throwing good ��$$ after bad and reworking BGA almost always ensure that they will fail
Electronics Forum | Thu Apr 10 20:57:03 EDT 2003 | Ray Chartrand
I've also seen "as received" defective devices. A tier 1 EMS I was working with put down an entire shift worth of these devices before it was noticed. Their rework costs were $$$. Just goes to prove that there's no free ticket and when bean counters