RE: [TN] Staking compounds
Hi All,
 
This is great information.  I've had an Assembly supplier suggest using an RTV to stake discrete components to FR-4.  Graham confirmed that it wasn't a good combination with a silicone based conformal coating.  (Thanks Graham.)  The last thing I or the customer needs is dewetting of the conformal coating.  My applications are hi-rel military avionics - in a rather harsh environment: high vibration, high humidity and some salt water.
 
Is there some cutoff point when it's better to go with mechanical staking?  I'm new to staking.
 
Hans
 

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Hans M. Hinners
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Warner Robins - Air Logistics Center (WR-ALC/LUGE)
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Robins AFB GA 31098-1622

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-----Original Message-----
From: Dieselberg, Ron [mailto:[log in to unmask]]
Sent: Tuesday, January 08, 2002 7:28 AM
To: [log in to unmask]
Subject: Re: [TN] Staking compounds

Doug, we have used CONAP K-20 for a long time with good results. We have also used Loctite 416 with 18580 activator. The Loctite is easier to use since it "sets" more quickly.

All depends on how you want to use it and how much time you have available for curing.
In either case be sure the materials that you are going to stake to are "sqweekey" clean!

Ron Dieselberg
Trainer/Auditor
CMC ELECTRONICS
CINCINNATI
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