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April 2005

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Subject:
Re: ENIG vs Hard Gold
From:
Gerard O'Brien <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Gerard O'Brien <[log in to unmask]>
Date:
Mon, 25 Apr 2005 09:33:02 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (165 lines) 
The POINT of this test was to examine if the use of ENIG as a switch
membrane interface was viable. The testing was performed to industry
protocol. There were no additional stress conditions  and multiple suppliers
were tested. Of course if you are going to use ENIG as a switch pad
interface metal in a corrosive environment or under water you may have some
slight issues - not least of which is the operator pushing the button.
Bottom line form the test was that for NORMAL use environments, such as cell
phones, radio's etc, the surface passed with flying colors - read the
document.




-----Original Message-----
From: David Douthit [mailto:[log in to unmask]]
Sent: Monday, April 25, 2005 7:54 AM
To: [log in to unmask]
Subject: Re: [TN] ENIG vs Hard Gold

Victor,

Not so great info!! This info can not be accurately correlated to "in
service " use because it does not take into account environmental
conditions. Temperature, humidity, contamination (airborne and other
forms) vibration and various combinations will drastically alter the
"life" of the key pads.

This test can give a false feeling of security!

David A. Douthit
Manager
LoCan LLC

Victor G. Hernandez wrote:

>Great info!   What is the 1.5 million cycles equate to in usage time.
>
>Victor,
>
>-----Original Message-----
>From: TechNet [mailto:[log in to unmask]] On Behalf Of Gerard O'Brien
>Sent: Monday, April 25, 2005 7:14 AM
>To: [log in to unmask]
>Subject: Re: [TN] ENIG vs Hard Gold
>
>Alistair - as part of the 4552 specification testing, we ran ENIG at 2
>microinches for 1.5 million cycles for a keypad type application. We
>stopped
>because the membrane was breaking down  but not the ENIG surface. The
>data
>can be found in the tech paper that is in the appendix of IPC-4552
>
>Regards
>
>
>Gerard O'Brien
>Photocircuits Corporation
>Co-chairman 4-14
>
>-----Original Message-----
>From: Alistair Murray [mailto:[log in to unmask]]
>Sent: Monday, April 25, 2005 6:51 AM
>To: [log in to unmask]
>Subject: [TN] ENIG vs Hard Gold
>
>Hi to everyone,
>
>Could someone please let me know or indicate where I can obtain
>information on the relative performances of ENIG and Hard Gold in
>keyboard applications?
>
>
>
>Many thanks in anticipation.
>
>
>
>
>
>
>
>Alistair Murray
>
>Artetch Circuits Ltd
>
>UK
>
>
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