Electronics Forum | Fri Jun 04 01:13:31 EDT 2010 | boardhouse
Hi fotis, Big difference between Cem3 & FR4 is that FR4 the glass is woven and Cem3 is sheet glass non-woven. for Multi layer product, i would not consider Cem3 due to increase chance of de-lam due to lack of weave for strength. Cem1 and Cem3 are
Electronics Forum | Mon Aug 05 03:03:50 EDT 2002 | jkhiew
Hi all, I had some old stock of CEM1 pcb: a. How long & under what temp. condition shall I bake it to eliminate the trapped moisture ? b. Is the baking time & temp. different for 3 yrs old stock, 2yrs old stock & 6 month old stock ? c. For CEM1 pcb,
Electronics Forum | Wed Aug 26 12:02:23 EDT 1998 | Steve Joy
Does anyone have any experience they are willing to share on Ag epoxy used as a copper through hole plating replacement? Was CEM3 used? What are the limitations? Thanks, Steve
Electronics Forum | Fri Oct 05 09:15:23 EDT 2001 | Ben Bierlein
It is a PCB material that has a woven glass / epoxy internal core and glass veil surface. It is in between the paper materials (FR1,FR2 and CEM1) and FR-4 as far as strength and cost. It is available in HiCTI material for high power applications.
Electronics Forum | Tue Sep 28 00:05:42 EDT 2004 | edtan@stockist.com
We are looking for worldwide listings of electronics EMS,CEMs and OEMs , if you can provide us your country list, please email to us at info@stockist.com , many thanks in advance
Electronics Forum | Tue May 25 13:30:38 EDT 2010 | nikopolidis
HI Please Advice witch material can stand more heat FR4 or CEM3. PCB assembly will be used under the body of toaster Temp. range 90°C Could anyone tell me the difference in PCB material For imcoming quality control. Thanks & regards Fotis
Electronics Forum | Mon Aug 06 18:29:33 EDT 2012 | spoiltforchoice
I would guess a small US/Europe CEM with modest equipment could probably get the assembly cost somewhere close to $15, the volume is large enough that tooling charges may well be irrelevant. Such a CEM might appreciate the freedom to source the parts
Electronics Forum | Tue Apr 27 15:37:00 EDT 1999 | Justin Medernach
| As I transfer prototypes/pilots out of my shop (because the designs are mature or Engineering confidence is high). How do I minimize my risk and ensure success for both the CEM and my boards. | | Best Regardsgroup. This would include low tech as
Electronics Forum | Mon Sep 25 07:35:04 EDT 2000 | Mikel Rodriguez
Hello, We are using FR-2 in boards 15x10cm size, with SMD and thru hole components (about 100 SMD and 50 thru hole). We have some "rare" problems (flex cracks or caps, diodes, and so on). Would we improve something by using CEM-1 instead of FR-2?? Mo
Electronics Forum | Thu Jan 12 15:43:57 EST 2006 | amol_kane
Hi all, while looking at some XRF equipment, a question arose as to the need for testing lead-free components at the CEM facility.....if a CEM has RoHS compliancy certificates from component vendors, is that "Due diligent enough" to absolve the CEM o
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