Electronics Forum | Wed Mar 08 14:11:38 EST 2006 | mholz
I am looking for an industry standard �stock� note to place on our printed circuit board assembly drawings that will capture a level of cleanliness for an IPC-A-610 class 2 board assembly. I�m looking for some quantitative spec for cleanliness that w
Electronics Forum | Wed Mar 08 15:12:41 EST 2006 | aj
All, I have a problem on a new device that we have on a new product. It is a LLP (Leadless Leadframe Package) if you search in google "sda16a" you can see one. I am finding it next to impossible to consistently achieve a good visible solder fillet
Electronics Forum | Thu Mar 09 00:45:57 EST 2006 | kent_peterson
Fastek will get it done with 2 machine and 2 shifts. 2 shifts would need to place 50,000cph. One CP643 with both device tables set could get it done. Having it panelized in 50's, you would need to print 50 panels a hour so get a auto cleaner on the p
Electronics Forum | Thu Mar 09 12:09:19 EST 2006 | fastek
I assumed a conservative 25,000 cph for each of the chipshooters...whether it's an MV2F, CP-6, CP-642 etc. You're not going to get 50,000 cph out of (1) CP-643. You might for short periods but not in the long run. It would be suicide to rely on one
Electronics Forum | Tue Mar 14 03:57:43 EST 2006 | Base
Hey Peter, Did some simple math... 800.000PCB's x 20cmp = 1.6million placements 8hrs/day * 22 days/month = 176 hrs You're looking at over 90kCph fulltime! I'd say go with an AX-5 as JAX suggested. Given the product you described you could reach s
Electronics Forum | Mon Mar 13 04:49:59 EST 2006 | Fhail
Hi All, I'm new in PCBA process. Recently in my leadfree production we encountered a missing ring on some of the ring on the board after we ran hem through Wave soldering machine. The board has gone through double reflow prior to the Wave soldering.
Electronics Forum | Tue Mar 14 13:42:45 EST 2006 | patrickbruneel
If the OSP boards have gone through double reflow I assume that you use an aggressive (halide) flux for wave soldering. SAC 305 is known (search the archives) to dissolve copper faster than other lead-free alloys. This together with an aggressive flu
Electronics Forum | Mon Mar 13 08:03:57 EST 2006 | paulinct
Hi Everyone, I searched and found some old comments about the Novastar machines. I was wondering if anyone has purchased a newer one and used it for Lead Free? If so what do you think? We currently run 2 Technical Device machines (leaded) and hav
Electronics Forum | Wed Mar 15 09:43:16 EST 2006 | ratsalad
About a year ago we switched from another vender to Kester 256HA paste. As we've switched assemblies from the old paste to our Kester paste, we've seen a need to increase the frequency of our oven cleanings. It has been very noticeable. After only
Electronics Forum | Fri Mar 17 10:16:10 EST 2006 | Chunks In Cebu
Just thought of something while on the beach. We made a paste change several years ago when we installed another surface mount line. At around that same time, our maint. crew changed chain oil and about 2 months later changed when they oiled the ch
