Service environment and board orientation therein are major considerations.  Many times if surface condensation is the concern and the PCB is horizontal, a small fillet of adhesive/sealant to perimeter seal around the connector is adequate.  They are even filled versions of coatings for such use.


-----Original Message-----
From: Ioan Tempea [mailto:[log in to unmask]] 
Sent: Thursday, December 08, 2011 1:04 PM
To: [log in to unmask]
Subject: [TN] Coating under connectors

Dear Technos,

 

Per IPC-HDBK-830, all solder joints and exposed leads should be coated. How does this apply to SMT connectors like this http://ipc-technet.groupsite.com/gallery/22102 ?

 

In this case, the connector is very low profile, all the joints plus many vias are hidden under the body and the coating will probably not wick over the whole area, so there will be many exposed metal features not coated.

 

I suppose the -830 requirement still stands and the situation under the connector is a defect?

 

Thanks,

 

Ioan Tempea, ing.
Ingénieur Principal de Fabrication / Senior Manufacturing Engineer
T | 450.967.7100 ext.244
E | [log in to unmask] <mailto:[log in to unmask]>  
W | www.digico.cc <http://www.digico.cc/> 

 
 N'imprimer que si nécessaire - Print only if you must

 


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