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January 2002

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Subject:
Nickel Plating Snarl
From:
"Neel, Robert" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 15 Jan 2002 12:16:59 -0600
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Folks,

Can someone explain to me why all my PCB houses are suddenly having
"spectacular cows" over this pcb plating spec:

"CONTACT PATTERN FINISH IS ELECTROLESS NICKEL, 50 MILLIONTHS THICK, MINIMUM
40 ROCKWELL C HARDNESS, MEASURED WITH KNOOP PROCESS @ 100 GRAMS"

This pcb is the substrate for some snap-acting domes and I need a hard and
conductive bearing surface for the dome feet.  The plating spec comes from
the dome manufacturer.

Is it the "electroless"?  Is it the thickness? Is it the hardness
requirement? Is it the "nickel" vs "nickle"?  (Funny thing is, though,
everyone is very happy to do gold rather than nickel.)

What gives?

Robert

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