We have used this material and an alternative EFPC05L from Electrolube, if members want to connect with me off the forum I'd be happy to discuss the finer details (which I'm not at liberty to disclose here)



Anyway, what you have to remember is that they are moisture repellents ..bit like wearing a treated 'water resistant' coat, the water forms globules on the surface due to the low surface tension and doesn’t penetrate to the board. This is important as most ionic or sulphur or silver contamination needs water as part of the chemical reaction. I believe some cell phone suppliers use it



You can't spray, dipping is best and this allows higher volume /lower cost that the traditional single unit spray, but yes connectors need special attention like for example 'sacrificial connectors' or reusable connector inserts. Blocking peelable compounds are a waste of time



Ive dealt with a lot of different compounds over the years, in both Aerospace and commercial...they all have their merits........



Regards



Paul



Paul R Taylor

Customer Application Engineering Manager

Grid Solutions

GE Renewable Energy (Part of GE Vernova)





M +44 7827 312568



-Non Public-



-----Original Message-----

From: TechNet <[log in to unmask]> On Behalf Of Richard Kraszewski

Sent: 05 December 2022 18:26

To: [log in to unmask]

Subject: EXT: Re: [TN] 3M™ Novec™ 2704 Electronic Grade Coating



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Somewhat like Scotch- Guard. 

For OEMs that want some type of coating (just because) but don't really know  what type and don't want a high added cost of coating, and/or...



Some added protected  for an assembly that will  go into a case/box and looking for condensation level protection.



Apply it thin and you don’t need to mask connectors (major cost savings) but you get poorer protection ,....and vice versa if applied thicker. 



Most good ones pass some level  of salt fog testing.







Rich Kraszewski 

Plexus  Neenah Operations 

920-969-6075



-----Original Message-----

From: TechNet <[log in to unmask]> On Behalf Of Steve Gregory

Sent: Thursday, December 1, 2022 8:17 AM

To: [log in to unmask]

Subject: [TN] 3M™ Novec™ 2704 Electronic Grade Coating



===================================================================================================================================

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Hello everyone,



Long time no post. I'm wondering if anybody has ever delved into 3M Novec

2704 Electronic

Grade Coatings? They almost sound too good to be true. Very thin coating, that can be sprayed or dipped and in many cases they say don't require masking.



From the little bit I have learned the material itself looks pretty expensive, but if it doesn't require masking it may be worth the cost.



Anybody ever used this stuff?



Thanks everyone (who's still here!)



Steve



--

Steve Gregory

Kimco Design and Manufacturing

Process Engineer

(208) 322-0500 Ext. -3133

Cell Phone: (918) 706-2779



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