Electronics Forum: epoxy over electric floor heating cables (Page 1 of 1)

PDBE and PBB replacements???

Electronics Forum | Fri Mar 11 18:47:54 EST 2005 | davef

JD: It's important to note that FR-4 does not contain PBB or PBDE. The bromine in FR-4 epoxy comes in the form of tetra-bromo-bisphenol A [TBBA], which polymerizes and become part of the cross-linked epoxy. Bromine, in the form of hydrogen bromide, i

Re: Need advise on regarding Vias

Electronics Forum | Fri Dec 17 12:09:09 EST 1999 | Boca

Outstanding advice gentlemen! To borrow Dave F's line "I'd like to take a bit of a different angle." Ie. a few wave solder specific issues If this assembly is going over wave solder then avoid vias under passive components, it invites solder bal

Ceramic PCB's

Electronics Forum | Wed Feb 25 08:34:00 EST 1998 | Earl Moon

CERAMIC CIRCUITRY Starting with hybrid thick film circuits in 1965 at Sperry Flight Systems, I have been involved with ceramics (usually aluminum oxide) as the substrate material. Then, we developed "multilayer" circuitry (replacing "cordwood" module

Re: Ceramic PCB's

Electronics Forum | Wed Feb 25 08:30:44 EST 1998 | Earl Moon

| Happy Holidays All, | I am searching out a vendor (US preferred) who can fabricate a ceramic PCb with etremely fine lines. | Please reply if you are a vendor, or know of one. | Thanks, | Wendy CERAMIC CIRCUITRY Starting with hybrid thick film circ

Re: Hey Ya'll, let's talk about Lead fer' a bit...

Electronics Forum | Sun May 02 18:44:26 EDT 1999 | JohnW

| | How's the "Great Gas-out" going for ya'll? | | | | Myself, I'm doing real good! Haven't farted all day...(GRIN) | | | | Anyways, a thread got started down below about this so-called "Lead Free" stuff, and I just wanna' put my two cents in about

Re: DFM / DFT information

Electronics Forum | Thu Jul 13 22:20:38 EDT 2000 | Dave F

=10 mils larger than lead 3 silk screen legend text weight >=10 mils 4 pads >=15 mils larger than finished hole sizes 5 place through hole components on 50 mil grid 6 no silk screen legend text over vias (if vias not solder masked) or holes 7 so

Stencil cleaners.

Electronics Forum | Mon Jul 17 13:37:35 EDT 2006 | carln

Here is something I copied from Circuitnet.com. This appears to answer your question and then some... http://www.circuitnet.com/experts/ Ask the Experts Jul 17, 2006 What type of cleaner method is preferred for lead-free stencils? What type of s

Re: Things I Like Without Endorsing

Electronics Forum | Sat Jun 05 00:27:54 EDT 1999 | Dean

| | | To you all for comment and summary, | | | | | | The following things I like without endorsing (PCB/PCBA stuff - outside the great women in my life [many] and without [mostly]): | | | | | | 1) A good set of design rules | | | 2) A good set of


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