Electronics Forum | Thu Nov 01 17:36:20 EST 2001 | davef
We don�t bake between routine washing between soldering cycles. We bake when we immediately go to test or box-build. Certainly, it all depends on your process, materials, and boards. So, how did you determine that you needed to spend the money? I
Electronics Forum | Wed Nov 14 10:23:51 EST 2001 | gzweig
This question and other issues on x-ray inspection of BGAs are addressed in the free PDF. publication available by e-mail entitled: Rapid and Effective X-ray Inspection of BGAs using "Signature Identification" Just place "send publication" in subj
Electronics Forum | Mon Nov 12 10:57:36 EST 2001 | emmanuel
We are to use a PBGA 272 and a PBGA 388. Between 500 and 750 thermal shocks (-45�C/+125�C), we have noticed that some cracks appear in the solder joints. According to our component specialists, these cracks are due to the whole design (pcb, component
Electronics Forum | Tue Nov 27 12:12:53 EST 2001 | Justin
We have noticed that when you are using a no-clean flux with the wave solder process that you will have additional solderballs. One thing that we have done is to change the PCB finish to a matte finish. This has greatly reduced the number of solder
Electronics Forum | Fri Nov 16 03:03:44 EST 2001 | madreindeer
John, I have seen process mixed technology in customer site.Now they dont use wave but they print paste through hole components.It is good and fast but it did take a time when they found a right paste to do that.Stencil is plastic and aprox.3mm(3000
Electronics Forum | Fri Nov 16 10:58:31 EST 2001 | slthomas
Short of locking them up and checking them in and out (and writing up your operators for not checking them back in at the end of a shift), I dunno. In short, I think ya gotta be a tool Nazi. We only use hand tools (assigned to the operator's pers
Electronics Forum | Fri Nov 23 11:58:18 EST 2001 | Warren Pumyea AMT, Inc.
Hello, I have a copy of the toolbox. Have not used it for a while so I'm not sure about the optimizer. please respond and let me know what e-mail address to send it too. Regards, Warren Pumyea AMT, Inc. Contract Manufacturer 978-840-3070
Electronics Forum | Fri Nov 23 11:58:20 EST 2001 | Warren Pumyea AMT, Inc.
Hello, I have a copy of the toolbox. Have not used it for a while so I'm not sure about the optimizer. please respond and let me know what e-mail address to send it too. Regards, Warren Pumyea AMT, Inc. Contract Manufacturer 978-840-3070
Electronics Forum | Mon Nov 26 20:30:03 EST 2001 | davef
Dirt => Beer => Girls FACT: * Hybrid circuits in the 1960s that were used to conquer space where the genesis of today's SMT. * Japanese commecialized it to build better transitor radios * UIC & Dynapert fought it tooth and nail. UIC finally got t
Electronics Forum | Tue Nov 27 01:43:29 EST 2001 | Anders
The reason why we are using soldered PCB jumpers is that it is cheaper than dip-switches, 0 ohms resistors, etc. Field updating is also easier. We are producing different variants of some of our products. It would nice if we could presolder the PCB
