autir Posted January 18, 2005 Report Share Posted January 18, 2005 On several PCBs I have observed that some components are glued together. I want to do the same in a circuit of mine which will be installed outdoors: nothing but four RJ-45 female connectors soldered on a veroboard. I want to do this in order to insulate the wires from moisture and weather effects in general. I own a 11mm hot melt glue gun. Which substance should I use, glue or silicone? Why? Quote Link to comment Share on other sites More sharing options...
EnigmaOne Posted January 18, 2005 Report Share Posted January 18, 2005 For DC through audio circuits, you can use hot-melt glue without problems.For RF circuits, or circuits that use switched-DC that approximates RF frequency rates, use GE Silicone Sealer.The reason being that hot-melt glue, while possessing excellent insulating properties at low frequencies, is not certified for use at radio frequencies.Some brands of silicone sealer will actually appear as a dead short at frequencies approaching those of the 11 meter band. This is why I specify 'GE brand' silicone Sealer. It has been shown to possess superior dielectric qualities at the switching frequencies involved with 10-100 Mb/s network connections. Quote Link to comment Share on other sites More sharing options...
trigger Posted January 18, 2005 Report Share Posted January 18, 2005 Just a reminder, the hot melt glue cannot withstand massive sunshine ....... it will easily fall apart after sometime. Quote Link to comment Share on other sites More sharing options...
ante Posted January 18, 2005 Report Share Posted January 18, 2005 Hi Guys,Be very careful when using silicone, if the silicone smells like vinegar DON Quote Link to comment Share on other sites More sharing options...
autir Posted January 18, 2005 Author Report Share Posted January 18, 2005 Before opening this thread I had already glued such a circuit using hot melt glue which smelled like vinegar ;DUnlucky me...I guess I have to throw the circuit away and create a new one?What other "ammunition" can a hot melt glue gun receive, besides glue and silicone? Quote Link to comment Share on other sites More sharing options...
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