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In a message dated 02/10/2000 4:47:52 PM Central Standard Time,
[log in to unmask] writes:
<< As a contract manufacturer, we recently have asked if we had any
problems when assembling PCB's that have been constructed using
"GTek".
Does anyone have any assembly experience regarding "localized heat" or
using "press fit connectors" on this material?
Is there any other properties that I should be aware of when I am
assembling components on these boards? (Board bowing, hydroscopic
properties that limit the board from going through the wash)
Thank you for any input
Rob Green >>
Hi Rob!
Go to: http://www.ge.com/electromaterials/products.htm#getek and you'll find
some info about it. Looks to me like you would handle Getek boards the same
way as any
other board. Looks to me like it's just a different high Tg laminate. Heck I
may have built some boards that were Getek and didn't know it...below I
pasted some stuff from the page...
-Steve Gregory-
Overview
GE Electromaterials manufactures and supplies laminates and prepregs for the
printed circuit board industry. Our materials offer a cost effective and
efficient option to meeting your demands.
GETEK® Thin Laminates (ML200), Rigid Laminates (RG200) and Prepregs
(T-Series)
GETEK® laminates and prepregs are patented products composed of epoxy and
polyphenylene oxide (PPO®) resins. They offer the improved thermal and
electrical properties needed for sophisticated circuitry - along with
processability and significant cost savings. GETEK® materials can easily
replace BT/Epoxy, Cyanate Ester, Polyimides, PTFE (Teflon®), and other
substrates in many existing applications.
Benefits:
Performance:
• Low and stable dielectric constant and dissipation factors
• Low moisture absorption
• High UL maximum operating temperature
• High Tg
• Low Z-axis expansion
• Superior crack resistance during thermal cycling
Processability:
• Better dimensional stability
• Tighter thickness control
• Consistent results of one formulation
• Processable with modified FR4 methodology
• Superior craze resistance
• Naturally UV-blocking; Fluorescent for AOI
The Result:
Performance that matches higher-priced materials, easier processing than
conventional high performance products and low material cost. It adds up to
make GETEK® laminates the most cost efficient solution for high-end
applications involving impedance control, high frequency and burn-in boards.
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