>-----Original Message-----
>From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] 
>On Behalf Of David W.S. King
>Sent: 22 October 2004 07:44
>To: Microcontroller discussion list - Public.
>Subject: RE: [EE] Socket security
>
>
>Hi Josh
>
>> Haven't seen you post in awhile. How's that ZIF socket I
>> sent you working out?
>
>It was a life saver right up till the programmer it was on 
>died on me. Had to grab a programmer and didn;t even think 
>about cheaping out and not getting another zif with it this time ;-]
>
>> Ok, back to your question. At work we use a little dab of silicone on
>> a lot of our screws and stuff, just to be sure they won't
>> work loose.
>> Works great, and it isn't too hard to get off if you really need to.
>> If you get a non corrosive silicone (without acetic acid) then you
>> should be ok. Another option might be a stiff wire jumper that goes
>> over the PIC and gets soldered down to the board.
>>
>> Josh
>
>It sounds like a blob of rtv is going to be the way to go. I 
>don't think I can use a nylon strap or a solder cross strap so 
>I'm "stuck" with glue...
>
>Dave

I used to work for a company that made railway signaling equipment.
Vibration was a significant problem, both of train and track/trackside
mounted equipment.  IIRC any IC's that had to be removable (most always
EPROMS, and always DIP) were first soldered into a turned pin header which
fitted nicely into the turned pin socket on the PCB.  A small cable tie or
two would be threaded around the whole assembly.  Some kind of RTV style
compound was tried and worked ok, but left the sockets in a mess after a few
EPROM changes, and it was considered that there was too high a risk of
contaminating the the pins and sockets.

Mike

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