Conformal Coating on IDC Ribbon Cable Connector?
Conformal Coating on IDC Ribbon Cable Connector?
(OP)
I am using an IDC type ribbon cable connector (TE 2-746610-4)in a fairly dusty/dirty environment. We have been conformal coating the connector, including top holes, on the assembly after the cable is crimped in of course. Our manufacturer is now saying that it could be an issue if the coating creeps inside compromising the connection. We specify Humiseal 1B73, 1A-20, or 1A-33. We have not had any issues up to this point. Is there an issue continuing this process, or a better way of coating the connector?
Thanks
Thanks





RE: Conformal Coating on IDC Ribbon Cable Connector?
You are probably better off with something other than air in the voids.
Mike Halloran
Pembroke Pines, FL, USA
RE: Conformal Coating on IDC Ribbon Cable Connector?
IDC ribbon connections are not really crimped: the tines just cut through the wire insulation on each side, so not a wonderful contact. Has this comment from the manufacturer arisen because you have referred back about reliability problems?
RE: Conformal Coating on IDC Ribbon Cable Connector?
Keith Cress
kcress - http://www.flaminsystems.com
RE: Conformal Coating on IDC Ribbon Cable Connector?
RE: Conformal Coating on IDC Ribbon Cable Connector?
If the connector is never exercised, there ought not be any need to conformal coat, unless there is possible corrosion.
TTFN

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RE: Conformal Coating on IDC Ribbon Cable Connector?
The IDC ribbon cable connectors we use have a gap that can be opened up about 1mm between the socket and plug by pulling up on the plug until the clips stop that motion. You can then clearly see the exposed pins...so what does that mean for conformal coatings and gas tight sockets, for either moisture or dust penetration? Maybe pull the connectors open and then apply coatings? I'd not trust a typical spray to penetrate and coat the exposed pins - maybe a gas phase coating like parylene would work.
RE: Conformal Coating on IDC Ribbon Cable Connector?
RE: Conformal Coating on IDC Ribbon Cable Connector?