Shirley:I'm guessing you are refering to Kester 5631-C2.We ran side
by side testing with the Kester,Enthone 106A and a couple of other OSP's.The
Kester and Enthone perfomance was very similar (i.e.good)thru OUR assembly
processes.I can't supply you with the written report but I can discuss the
testing for both bare board fabrication and assembly to some extent over the
phone.
Regards
Michael Barmuta
Staff Engineer
Fluke Corp.
Everett Wa.
(206)356-6076
On Tue, 14 Jan 1997 08:46:58 -0800 Ng-CSN007 Shirley wrote:
> From: Ng-CSN007 Shirley <[log in to unmask]>
> Date: Tue, 14 Jan 1997 08:46:58 -0800
> Subject: RE: ASSY: OSP coatings
> To: [log in to unmask]
>
>
> Dear Tech-netters,
>
> Anyone has done any comparison for OSP Kester 561 vs Entek Cu-106A ? If
yes,
> appreciate if you can forward the evaluation report.
>
> Thanking you in advance.
>
> Shirley Ng
> email : [log in to unmask]
>
>
_____________________________________________________________________________
__
> To: [log in to unmask]
> From: [log in to unmask] on Mon, Jan 13, 1997 7:04 PM
> Subject: ASSY: OSP coatings
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> Message-Id: <[log in to unmask]>
> To: [log in to unmask]
> Subject: ASSY: OSP coatings
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>
> Dear Tech-netters,
>
> We are experiencing solderability problems with boards which are OSP
> (Entek-plus-CU-106) coated by our supplier and have been in our
> storage facility for just on 12 months.
We have had Entek 56 which was in stores (in
sulfur-free boxes with dessicant for about two
years and had acceptable solder criteria using
a aqueous wash process VOC-free flux. Enthone
recommends stacks 10 to 25 with outer
sulfur-free slip sheets, shrink wrapped (--to
tight warps the boards prefer tight to prevent
shifting but enough to not make a terrarium)
in a sulfer-free box with dessicant. All pcb
handlers must wear impermeable gloves.
Brian
Avoid environments that will reduce the
coating: hot water 140F, saphonifier wash,
solvents/alcohol, elevated temperatures (time
above
> Does anyone know of any guidelines (published or experience-based) for
> shelf life and protection requirements in storage of boards with this
> type of coating ?
>
> Thanks in advance.
>
>
> Eugenio Bini
> ERG Ltd.
> 247 Balcatta Rd.
> Balcatta, WA 6027
> Australia
> Tel:+61-9-2731174
> Fax:+61-9-2731450
> email: [log in to unmask]
>
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