Victor - LIF is Low insertion Force. Plug to install typically means that
the module will NOT be exposed to more than 20 - 25 insertions - some people
define plug to install as no more than 5 insertions.
So ENIG typically meets this criteria, however the use of High insertion
force connectors may NOT work given the soft properties of the I Au deposit.

Regards


Gerard

-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]]
Sent: Friday, November 12, 2004 5:01 PM
To: [log in to unmask]; [log in to unmask]
Subject: RE: [TN] ENIG as edge-connector finish

Gerard,

I am familiar with Zero Insertion Force, ZIF, contacts such as CPU
sockets.
I am not familiar with LIF product or PLUG to install.
Can you please elaborate.

Is ENIG suitable for edge connector plating application.   Less than 5
micro inches will probably not withstand multiple, multiple insertions.
I am confused with the SOFT Properties of ENIG plating for wipe
applications.

Victor,

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Gerard O'Brien
Sent: Friday, November 12, 2004 2:13 PM
To: [log in to unmask]
Subject: Re: [TN] ENIG as edge-connector finish

Glynn - ENIG was tested for soft membrane switch applications to 1.5
million
cycles - there was no testing for the wiping type switches. For plug to
install applications ENIG works fine as an edge connector plating. For
LIF
or ZIF type connectors the number of insertions will obviously be much
higher. Testing for the 1.5 million cycles was run on 150 micro inches
Ni
and 3 micro inches gold

Regards

Gerard O'Brien
Photocircuits Corporation
Co-chairman 4-14 plating committee.



-----Original Message-----
From: Glynn Shaw [mailto:[log in to unmask]]
Sent: Friday, November 12, 2004 11:00 AM
To: [log in to unmask]
Subject: [TN] ENIG as edge-connector finish

I thought I read somewhere that IPC said Enig was an acceptable finish
for
switches and would withstand in excess of 250,000 wiping actions. Does
anyone know if 150 micro inches electroless nickel with 4-6 micro inches
immersion gold is acceptable as a finish for edge connectors?

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