To me soldering a press fit would be like soldering a wire wrap. And yes I have seen this done.
-----Original Message-----
From: Steve Gregory [mailto:[log in to unmask]]
Sent: Friday, October 25, 2002 6:59 PM
To: [log in to unmask]
Subject: Re: [TN] Press fit connectors...
Hi David!
Can I ask why? Just thinking about things out loud, you're pressing a pin into a plated through hole that will be deforming the barrel to some extent. Solid press-fit pins more-so than a compliant pin.
Thinking about that, when the connector goes across the wave, it would seem to me that the thermal excursion on the barrel would stress things further on an already stressed barrel...
What advantages are realized by soldering a press-fit connector? As Boston Brad said; Solder the drop in connectors, but leave the press-fits alone...(maybe not his exact words, but essentially the same thing...)
Also, as Charles had said (he has a mind like a steel trap), I did go through this once before with some press-fit connectors from Harting, the finish plating on the pins was nickel, and were never meant to be soldered after talking with an engineer at Harting. The operators were wondering why they had so many solder problems with the connectors before I got there.
By the way, this isn't class 3, it's class 2. But I'm still curious why you would recommend soldering them, when everything I've read, heard, and tried to find out, says that pressing them in is sufficient, and if you solder them, you're asking for trouble.
Respectfully,
-Steve Gregory-
d if you
Steve, For Class 3 I would press and solder. David A. Douthit
Manager
LoCan LLC
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