Electronics Forum: laminates (Page 1 of 47)

High Tg laminates

Electronics Forum | Tue Nov 16 18:02:29 EST 1999 | John Holland

What are the main advantages of moving from a 140 degree C FR4 laminate to a higher Tg laminate 180 degree C ?. Would the higher Tg laminate be less susceptable to bow and twist ?. John Holland

Re: High Tg laminates

Electronics Forum | Wed Nov 17 09:02:57 EST 1999 | Dave F

John: The 180 Tg point is a sweet spot for obtaining heat resistance, cost effectivly. These high technology boards provide good thermal resistance for wire bonding, direct chip attach, and BGA mounting and rework. Since these boards are harder th

material of laminates of printed circuit board

Electronics Forum | Thu Feb 03 06:21:57 EST 2000 | Ignacio Simon

I would like to have information about the materials commonly used for laminates of printed circuit boards, their main thermal, mechanical, humidity and electrical characteristics and proper finishing and aplicattions, and advantages/disadvantages be

Lead Free board laminates and surface finishes

Electronics Forum | Thu Oct 13 15:34:55 EDT 2005 | Amol

Hi, We are in the process of transitioning to LF production. What are some of board materials being successfully used in production? Also, what surface finishes show promice of good results with SAC 305 solder? We are currently testing multiple boar

Re: material of laminates of printed circuit board

Electronics Forum | Thu Feb 03 21:20:50 EST 2000 | Dave F

Ignacio: Try: Electronic Packaging & Interconnection Handbook, Harper, (ISBN 0070266948) Printed Circuit Board Materials Handbook Jawitz, MW McGraw-Hill 1997 (ISBN 0070324883) merix.com/resourcecntr/materials/mtl_property_comp.html norplex.com/TD_L

Very thin laminate substrate problem with solder printing

Electronics Forum | Mon Jan 30 15:32:14 EST 2017 | davef

so, why are your laminates warped? What needs to be done to correct that issue?

Transparent Laminate

Electronics Forum | Mon Nov 08 12:06:40 EST 2004 | davef

We are aware of no transparent laminates. Most are roughly translucent, with a milky white color. Some laminated are quite thin and could serve your purpose. As an alternative, could you etch foil [that's readily available] and the attach the etch

PCB Delamination

Electronics Forum | Mon Jun 04 09:15:08 EDT 2012 | davef

bwjm: Delamination can be attributed to several factors: * Entrapped moisture, processing solutions, and what not that expands when heated to normal soldering temperature * Excessive soldering temperature * Excessive laminating temperature * Def

Very thin laminate substrate problem with solder printing

Electronics Forum | Tue Jan 31 21:15:52 EST 2017 | davef

Dispensing: You can dispense for 0201 and above Warped laminates: Ask your laminate fabricator what's ausing the warping and how to make it go away

Laminate materials

Electronics Forum | Tue Aug 22 13:04:04 EDT 2000 | Eugene Smelik

Dr. Lee, Given the higher reflow temperatures for Pb-Free assembly, will common FR4 laminate materials be adequate, or do you believe that higher glass content boards will be required for mainstream Pb-free assembly? As a corollary question - if man

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