Many moons ago I was responsible for pressing in backplane connectors for mainframe computers. The "lubricant" we used with great success was DI water.

Ed Popielarski
Engineering Manager


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-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Roger Mack
Sent: Wednesday, May 10, 2017 6:57 AM
To: [log in to unmask]
Subject: Re: [TN] Holtite socket receptacle insertion

It has been 20 years since I worked with these. There is a big difference in inserting in HASL or ENIG. The center punch tool (which at the time was an actual Starrett center punch that came with screw in tips for these
sockets) could not fully seat the socket in ENIG while easily fully insert in HASL. A lubricant was available, but I do not recall if it was from Augat.



Roger Mack  P.Eng. 
Manufacturing Specialist
Parker Hannifin Canada
Electronic Controls Division
1305 Clarence Avenue
Winnipeg, MB  R3T 1T4 Canada
direct 204 453 3339 x7373
[log in to unmask]
www.parker.com/ecd







From:   Steve Gregory <[log in to unmask]>
To:     <[log in to unmask]>
Date:   2017-05-09 02:08 PM
Subject:        [TN] Holtite socket receptacle insertion
Sent by:        TechNet <[log in to unmask]>



Hi All,

We just had a customer revise an assembly with us and have chosen to use
some Holtite sockets for a through-hole photo diode on the assembly.

http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=114-13033&DocType=SS&DocLang=EN


The board is really small, about 1" square and .062" thick. It also has
double sided SMT on it, so there's not much room around the holes. I say
that because from what I remember when I last used these sockets, is that
we used a hand tool that was more like a spring loaded center punch (it's
on page 6 in the PDF above) that has different tips that you changed out
depending on what part number socket you were inserting, and it took a
surprising amount of force to seat these sockets. Of course the tool is
close to $300, and I'm thinking we'll need a press fit fixture to support
the PCB when we install them because the board is only .062" thick. But 
our
customer says they built some proto assemblies with these sockets and was
able to press them in with their finger nail, does that sound right? I'm
thinking that the holes were probably oversized and they aren't getting 
the
kind of connection between the socket and barrel that they need to be
getting to have any sort of reliability.

Is my memory getting that fuzzy?

Steve

-- 
Steve Gregory
Kimco Design and Manufacturing
Process Engineer
(208) 322-0500 Ext. -3133

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