Electronics Forum | Thu Apr 11 19:06:59 EDT 2002 | tmarc
We are using 1mm pitch BGAs with a great quantity of via(s) under the component. Very shortly we will be placing CSPs with .65mm pitch. Our via(s) are solder masked, however we generally have a percentage of them that the masking is thin enough that
Electronics Forum | Sun Apr 14 14:13:25 EDT 2002 | davef
I assume you're looking at stencil fab equipment because you need 'faster turns' than you can get from available stencil suppliers. While you're assessing this, consider other alternatives, such as: * Dispensing paste. [A very funny SMTNetter, livin
Electronics Forum | Wed Apr 24 14:14:57 EDT 2002 | stefwitt
If nobody else can help you and you are not afraid to add a bit of hardware, I would like to give it a try. If pistons are air activated there should be a solenoid for each piston. Locate the I/O signals, wire in a double through switch and apply 24
Electronics Forum | Fri May 03 00:18:18 EDT 2002 | caldon
Gregp hit the nail on the head.Some of Quads Platforms were of the private label but Samsung and Mirea are no longer partners with Quad. Samsung and Mirae are independant now in the market. Machines made by Quad are stable.I do not know how Multitron
Electronics Forum | Thu May 22 17:17:37 EDT 2003 | ssnow
I have to agree with you on the documentation side of the manuals ,they were written before they ever hired a tech writer, when they finally did they wrote manuals for the newer stuff and let the older machines alone. The basic's are pretty straight
Electronics Forum | Wed May 15 12:55:11 EDT 2002 | fmonette
Hi Dave, The short answer is "not any significant amount" of moisture is removed during reflow. The temperature excursion is much too short. If you look at the physics of moisture diffusion inside a package you will see that only the surface moist
Electronics Forum | Tue May 14 14:48:33 EDT 2002 | fmonette
Hi Dason, Here is some relevant information that you might find useful : J-STD-033, section 7.1.2.2 Dry Box : "Components may be placed in a dry box, capable of maintaining 25+/-5C and less than 10%RH. Nitrogen or dry air may be used." In other w
Electronics Forum | Wed May 22 10:27:33 EDT 2002 | stefwitt
Fiducial recognition on the Siemens machine works like the Mydata. Once you select this option, fiducials will be recognized when a new program is send. You can also select recognition as part of the feeder refill function mode. There is no automatic
Electronics Forum | Wed Jun 05 14:43:33 EDT 2002 | davef
Steve, As a reason for cleaning no-clean flux res: Well, maybe some of Por's products / customers can live with NC flux res, while others cannot accept it. So, rather than running two fluxes Por finds it simpler to clean the NC flux res. For us,
Electronics Forum | Wed Jun 19 12:42:45 EDT 2002 | nuezmaster
The problem that my exec. had was that he did not want to add too many people to the department because there is no telling how long the demand will stay high. Therefore, I decided just to add a PCB inspector between the Pick and Place machines and
