Aluminium to anything will fairly quickly go electrically open circuit,
although you will retain thermal conductivity. Depending on the conditions
of use and the contact metal you will next slowly or quickly achieve all
sorts of corrosion issues. Immunise the aluminium from the outside world
with something more stable like nickel

Kind Regards

Mike Fenner

Applications Engineer, European Operations
Indium Corporation
 T: + 44 1908 580 400
M: + 44 7810 526 317
 F: + 44 1908 580 411
 E: [log in to unmask]
W: www.indium.com
Leadfree: www.Pb-Free.com



-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Phil Nutting
Sent: Wednesday, April 10, 2002 9:12 PM
To: [log in to unmask]
Subject: [TN] connecting aluminum to copper


Good afternoon TechNet,

Would anyone like to share their knowledge about using an aluminum standoff
as a conductor when connecting two circuit boards together.  I suspect that
if it were aluminum to copper there would be an issue, but what about
aluminum to HASL surface of circuit boards?

Thanks in advance for your wisdom,

Phil Nutting

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