Hi Wee:
Answering question number 3, there is
a tool that looks like a wide tooth comb that supports the board while
the connector pins are pressed. Depending on the number of pins, it
takes several hundred pounds of pressure to press the average press fit
connector.
Regards,
Ramon
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Wee Mei
Sent: Wednesday, November 09, 2005 10:24 PM
To: [log in to unmask]
Subject: Re: [TN] Press-fit pins and polyimide laminate
Hello,
I would like to join in to ask some questions about press-fit connectors
on flex circuit :
1. Can press fit connector be used on flex circuit? My opinion is no
unless it is on the rigid section. But then how about MLB flex? How many
layers then is good for press-fit.
2. Does the rules for press-fit on rigid board apply to mulitlayer flex
too?
3. Must press-fit connector be assemblied using a tool or can they be
pushed in by hands?
Regards,
Wee Mei
----- Original Message -----
From: "Zilber Gil" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, November 09, 2005 2:37 AM
Subject: Re: [TN] Press-fit pins and polyimide laminate
> We are using press fit in polyimide laminates for many years without
> any problem. They pass all the military reliability test. A good
> support of the boar during the assembly is important.
>
> Regards,
>
> Dr. Gil Zilber
> Technologist, Elta system Ltd.
> Tel. +972-8-8577240
> Mobile +972-54-4983222
> http://www.iai.co.il/site/en/iai.asp?pi=17887
>
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Geoff Layhe of
> Lamar Group
> Sent: Tuesday, November 08, 2005 7:29 PM
> To: [log in to unmask]
> Subject: [TN] Press-fit pins and polyimide laminate
>
> Does anybody have information about the suitability of polyimide (or
> any other high temp laminate) with press fit pins.
>
> It doesn't seem a good idea to me to use them with poyimide being more
> brittle than FR4 but are there any guidelines anywhere?
>
> Geoff Layhe
>
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