Electronics Forum: silver conductive adhesive (Page 1 of 21)

electrically conductive adhesives

Electronics Forum | Mon Feb 28 08:06:49 EST 2005 | davef

You'll be able to tell pretty soon if this will work. * Our bet is the epoxy will corrode the silver. * Another concern is that you're not fusing the silver to the copper. Why not ask the imm silver suppliers: * Alpha Level Silver [ http://www.al

electrically conductive adhesives

Electronics Forum | Thu Feb 24 08:29:01 EST 2005 | davef

We have done some work with conductive adhesives. The main lesson is: They do not adhere well to solder. * For components, a silver-palladium or gold end termination is recommended. * For substrates, gold over nickel should work well.

electrically conductive adhesives

Electronics Forum | Thu Feb 24 10:34:02 EST 2005 | Rob

Thanks Dave, From what I remember a lot of components went away from Silver Palladium to "base metal" terminations because of the difficulties in continuation of supply & stability of price. (Something about being mined in Chechnia or the Congo?) W

electrically conductive adhesives

Electronics Forum | Mon Feb 28 04:10:07 EST 2005 | Rob

Hi Dave, Was planning on skipping the paste step & screen printing the adhesive straight onto the pad, then placing the component into the glue & curing. (Board has LEDs only) Regarding the lead-free HASL issue - not entirely sure on the board man

electrically conductive adhesives

Electronics Forum | Wed Feb 23 10:36:37 EST 2005 | Indy

Hi Rob, I had tried printig anisotropic conductive adhesive as a replacement for solder paste. Following were my finding. Adv: - curing temp is around 120-150C as compared to 217C (Pb-free) solder. - good electrical conductivity, since it is usual

electrically conductive adhesives

Electronics Forum | Thu Feb 24 06:41:14 EST 2005 | Rob

Hi Indy, Thanks very much for the info - very helpful. Was there any particular adhesive that stood out? Cheers, Rob.

electrically conductive adhesives

Electronics Forum | Wed Feb 23 09:33:03 EST 2005 | rlackey

Hi, Does anyone have any experience of using electrically conductive adhesives, including info on the following? 1) Autodispensing/screen printing 2) Curing temps/profiles 3) Quality/conductivity of joint 4) Product recommendations Our customer w

electrically conductive adhesives

Electronics Forum | Wed Mar 02 11:57:10 EST 2005 | Rob

Hi Dave, Thanks for the info, it will be helpful. Planning on trying it on a number of finishes, and have arranged for some samples of the adhesive - Loctite 3880 to start with. Have discovered something important already though - why not many peo

electrically conductive adhesives

Electronics Forum | Thu Feb 24 16:14:46 EST 2005 | davef

Rob: Why aren't the board houses over there going to lead-free HASL [not that HASL is the most wonderful thing on the planet]? What's the price delta on an unit basis for a x-HASL, now imm Ag board? Anyhow back to the point, so, you're proposing t

Conductive adhesive

Electronics Forum | Wed Aug 19 06:40:06 EDT 1998 | G Thomas

Require a conductive adhesive - either isotropic or anisotrpic - which can be used for 100micron oitch devices. Must be resistant to solvents such as MEK and acetone. Cure below 150C, with possible potential for rework of the conections.

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