Electronics Forum | Mon Feb 10 20:05:28 EST 2003 | joeherz
Hello, We are looking at new/used buildings and are faced with decisions regarding what type of flooring to have installed. I know a little about epoxy, vinyl tiles, rubber, paint and plain old ESD wax on concrete but don't want to re-invent the wh
Electronics Forum | Fri Feb 14 08:08:45 EST 2003 | Louis
First of all I would like to say that my English is so-so but I will try to help you. FOLLOW THOSE STEPS AND YOU WILL BE OK. 1-- select learn fiducial option then enter minimal value to fiducial width and height (enter 0 and you will g
Electronics Forum | Thu Feb 27 14:02:26 EST 2003 | russ
Genny you are right on with the differences between suppliers/packaging etc... I am a CEM and you are correct that we pay no heed to cad rotations from our customers/designers. A.V.L./manufacturers P/Ns information specifies orientations and such.
Electronics Forum | Thu Feb 27 14:41:48 EST 2003 | jax
Cad rotation should not change with relation to how the part is presented to the machine. It should only depend on how the part is orientated on the PCB when the PCB is at 0 rotation. There is a seperate field to input part rotation inside a feeder.
Electronics Forum | Mon Mar 03 11:49:15 EST 2003 | msivigny
Hello marys, To determine the quality performance specification of your printers, dispensers or placement equipment, you must first know the operational accuracy and repeatability criteria from the equipment manufacturer. Only then can you determine
Electronics Forum | Tue Mar 04 18:05:03 EST 2003 | msivigny
Hello Maribel, One way you justify the use of an AOI is to calculate how many defects the system will potentially detect before reflow, associate a repair cost per defect and make the calculation. For an AOI to be effective in this regard, it must sc
Electronics Forum | Fri Mar 07 10:51:53 EST 2003 | dphilbrick
Another value add of N2 is when you are running a gold over nickel process it is recommended that you reach a peak of 220c instead of 215 when running in air. When you add N2 you can maintain that 215 number with the same results. If you look at your
Electronics Forum | Fri Mar 07 05:36:21 EST 2003 | O' Connor
Hi Again, In answer to DaveF - Yes solder is fine where the solder paste is deposited , but the part of the pad visible after pasting is still visible after reflow. Previously the solder paste & all the gold diffused & flowed giving a complete silve
Electronics Forum | Tue Mar 11 13:35:04 EST 2003 | MA/NY DDave
Hey Neat, We share some of the same books, although I would strongly recommend he expand his collection. That Flex book is only one, the most pricey one, of many on that technology. JUST Kidding THANKS!! If we started listing all our magazine, te
Electronics Forum | Wed Mar 12 16:04:24 EST 2003 | O' Connor
Everybody thanks for all your help, the problem has been solved. Before I describe the solution I've got to own up, I'm the PCB Design Eng., The Process Eng. lobbed this problem onto my desk last week, said the problem lay with the PCB finish, whats
