Re: question 1.
The clamping of the screw/washer will provide sufficient surface adhesion to
prevent oxidation and fretting.
The solder paste would for m a drop and prvevnt a surface clamp. It would be
a tangental contact. Not desirable.
Re: Question 2.
As long as the hole dimension is consistent with the connector manufacturers
specification, a gas tight connection will be made.
A couple of years using Entek has not produced problems.

> -----Original Message-----
> From: Ken Patel [SMTP:[log in to unmask]]
> Sent: Tuesday, December 15, 1998 4:29 PM
> To:   [log in to unmask]
> Subject:      [TN] Urgent: Entek Coated PCB processing at assembly house
>
> Hello Technetters,
> I have couple of questions for Entek coated boards I am running on sample
> basis.
> (1) Do I need to apply solder paste on mounting holes of Entek coated
>     boards? These mounting holes will be used to fasten the board in a
>     chassis. Give me your pros and cons.
> (2) The boards do have press fit connectors. Do you think I will be OK
>     with the Entek coating as connectors now will be making a contact
>     with copper which will get oxidized. Any long term problem from
>     reliability point of view. Can anyone suggest any test to find any
>     long-term reliability problem because of press-fit connector going
>     onto the bare copper?
>
> re,
> Ken Patel
>
>
> ______________________________________________________
> Ken Patel                       Phone:  (408) 490-6804
> 1708 McCarthy Blvd.             Fax:    (408) 490-6859
> Milpitas, CA 95035              Beeper: (888) 769-1808
>
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