http://www.te.com/content/dam/te-com/documents/automotive/global/whitepaper-pressfit-072014.pdf
nano?
> Sn63 HASL coating is the best finish, provided you are allowed to use it.
> The lead is a lubricant.
> No matter what the chosen finish is, the most important variable to
> control is the finished hole size after plating and the tolerance.
> The ability to perform  the proper initial drill consistently and obtain
> the initial hole size within a tight tolerance after drilling
> (repeatability and control over drills), and obtain the final hole size
> after plating varies from PWB fabricator to PWB fabricator. The selection
> of the right fabricator is extremely important for PWBs that will use
> press-fit or compliant-lead connectors.
> The eyelid should be completely under the top surface of the hole. The
> connector design controls the depth of the eye with respect to the shut
> height of the connector, ie, if fully pressed in such that the insulators
> or connector body are fully seated to the PWB surface, the eye should be
> at least 95% fully into the hole. The ability to obtain that is affected
> by the resistance variable, the amount the pin is allowed to bend upwards
> during insertion, and this is an attribute of the press tooling and press
> setup. The amount of resistance brings into play the finished hole size,
> the surface hole finish, and how the stars line up on the day you decide
> to press them in, and the relationship of the press operator's mother to
> his/her father on the day of conception. So "Godd Luck" with that.
> Odin
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Mattix, Dwight
> Sent: Wednesday, April 13, 2016 11:59 AM
> To: [log in to unmask]
> Subject: Re: [TN] Press Fit Pins guideline, Second Time Around
>
> Realized long time ago, the only way out is to do your own due diligence.
> Good luck with getting funds approved for your own reliability
> demonstration, hole wall deformation x-section analysis and pin to pwb
> insertion/retention force testing.
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
> Sent: Wednesday, April 13, 2016 4:13 AM
> To: [log in to unmask]
> Subject: Re: [TN] Press Fit Pins guideline, Second Time Around
>
> I feel the pain......    There is not relief in sight.....
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Lum Wee Mei
> Sent: Tuesday, April 12, 2016 7:26 PM
> To: [log in to unmask]
> Subject: Re: [TN] Press Fit Pins guideline, Second Time Around
>
> I have been asking the same questions even directly to the press-fit
> manufacturer themselves and there is no conclusive answer. Except to drown
> myself in the piles and piles of information from their website and often
> end up going round and round.
>
> To quote from Gerry : " Godd hunting"
>
> Regards,
> ~wee mei~
> ________________________________________
> From: TechNet [[log in to unmask]] on behalf of Gerry Gagnon
> [[log in to unmask]]
> Sent: Wednesday, April 13, 2016 1:55 AM
> To: [log in to unmask]
> Subject: Re: [TN] Press Fit Pins guideline, Second Time Around
>
> Hi Victor,
>
> Second time is the charm.
>
> Press fit pins are highly engineered and have many specifications
> associated with them.
> Each press pin manufacturer's design tends to be unique as a lot of them
> are patented.
>
> The best answer to your questions is to tell you to find out the specific
> press pin manufacturer's part number for the pin that you are dealing
> with, go to their web site, and get the drawings and specifications for
> the specific pin you want to know about.
>
> I think you will be surprised at the level of detail you will receive for
> your questions plus the attributes you have not asked for ....... yet.
>
> Good hunting.
>
> Gerry
>
> ________________________________________
> From: TechNet on behalf of Victor Hernandez
> Sent: Tuesday, April 12, 2016 11:59 AM
> To: [log in to unmask]
> Subject: Re: [TN] Press Fit Pins guideline, Second Time Around
>
> Fellow TechNetters:
>
> My initial inquiry, 2011, did NOT yield any useful information. Therefore,
> I pose the same question again in hope that additional reader will provide
> comments and/or their experience with Press Fit Pins.
> I look forward to hear from the readers.
>
> What is the acceptable depth of the main eye lid with regards to total
> board thickness? I have seen a variety of depths used.
> What is the preferred raw board surface finish? Again, I have seen a
> variety.
>
> Victor,
>
> From: Garcia, Rigo (GSFC-370.0)[ARES CORP] [mailto:[log in to unmask]]
> Sent: Wednesday, January 27, 2016 11:28 AM
> To: Hernandez, Victor G
> Subject: RE: Press Fit Pins guideline
>
> Thanks!
>
> Rigo
>
> "The future belongs to those who believe in the beauty of their dreams" -
> Eleanor Roosevelt
>
> From: [log in to unmask] [mailto:[log in to unmask]]
> Sent: Wednesday, January 27, 2016 12:21 PM
> To: Garcia, Rigo (GSFC-370.0)[ARES CORP]
> Cc: [log in to unmask]
> Subject: RE: Press Fit Pins guideline
>
> Rigo,
>
> I did NOT get any concrete guidelines and/or specification for Press Pin
> Fit leads. The specs that are out there are confidential.
>
> Victor,
>
> -----Original Message-----
> From: Garcia, Rigo (GSFC-370.0)[ARES CORP] [mailto:[log in to unmask]]
> Sent: Wednesday, January 27, 2016 11:08 AM
> To: Hernandez, Victor G
> Subject: RE: Press Fit Pins guideline
>
> Hi Victor,
>
> Did you get an answer to your question?
>
> I'm interested because we are looking into qualifying press fit connectors
> for flight hardware and don't know of any specs that provide requirements
> for the process.
>
> Best regards,
>
> Rigo Garcia
>
> "The future belongs to those who believe in the beauty of their dreams" -
> Eleanor Roosevelt
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
> Sent: Monday, January 25, 2016 1:40 PM
> To: [log in to unmask]
> Subject: [TN] Press Fit Pins guideline
>
> Fellow TechNetters:
>
> What is the current IPC guideline/specification for insertion depth of
> Press Fit Pins. I aware that the Press Fit Pins configuration might vary a
> little, just as well as board thickness. What is the acceptance criteria I
> should look for visually and during x-ray imaging.
>
> Victor,
>
>
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