Page 1 DCE SCC3 Elastomer Gel DCE is a thixotropic version of DCA, formulated to provide ease and consistency in robotic dispensing whilst still ensuring desired protection for electronic circuitry. DCE is ideally suited for use with DCA to protect specific components on a circuit board that may be difficult to coat due to size, shape and position. Formulated to provide ease and consistency in robotic dispensing Thixotropic gel ideal for solving unwanted coating migration due to the capillary effect Designed for use with Electrolube DCA provides a total solution for coating processes Can be reworked using specialist removal product, Electrolube CCRG Approvals RoHS Compliant (2015/863/EU): Yes UL746C-QMJU2: Meets approval DEF-STAN 59/47 (Issue 4): Meets approval IPC-CC-830: Meets approval Liquid Properties Appearance: Clear Pale Straw Density 20C (g/ml): 0.97 VOC Content: 68% Flash Point: 27C Solids content: 40% Viscosity 20C: Thixotropic Touch Dry: 2 Hours Recommended Curing Schedule: 4 Hours 20C followed by: 2 - 24 Hours 90C to 120C *(Maximum Solvent Resistance Achieved 120C Ambient Curing Schedule: 24 Hours 20-25C) 2 Coverage 25 m: 16.8m per litre Cured Film Coating Colour: Colourless Operating Temperature Range: -70C to +200C Flammability: Self extinguishing Thermal Cycling (MIL-1-46058C): Meets approval Coefficient of Expansion: 90ppm Dielectric Strength: 90 kV/mm Dielectric Constant: 3.95 1MHz 15 Surface Insulation Resistance: 1 x 10 Dissipation Factor ( 1MHz 25C): 0.037 Moisture Resistance (MIL-1-46058C): Meets approval UV Trace Yes Page 2 Description Packaging Order Code Shelf Life DCE Conformal Coating 0.75 Litre Bulk DCE0.75L 12 Months Conformal Coating Removal Gel 1 Litre Bulk CCRG01L 36 Months Directions for Use DCE is a thixotropic material specially formulated to provide ease and consistency in robotic dispensing. Temperatures of less than 16C or relative humidity in excess of 75% are unsuitable for the application of DCE. As is the case for all solvent based conformal coatings, adequate extraction should be used (refer to SDS for further information). Substrates should be thoroughly cleaned before coating. This is required to ensure that satisfactory adhesion to the substrate is possible. Also, all flux residues must be removed as they may become corrosive if left on the PCB. Electrolube manufacture a range of cleaning products using both hydrocarbon solvent and aqueous technology. Electrolube cleaning products produce results within Military specification. Drying Times and Curing Conditions The properties gained from DCE are dependent on the curing schedule employed. It is essential that the coating be allowed a minimum of 4 hours drying time at ambient temperature prior to any heat curing. This is necessary to allow the solvent system to evaporate. Ambient Ambient curing is via solvent evaporation only. Eliminating the heat curing step will reduce solvent resistance. Other properties, such as resistance to humid and corrosive environments, may also reduce but still meet the requirements of many industry standards. Coated boards should be left at room temperature for the solvent to evaporate extraction is required in the curing area. Commercial Most commercial users will gain satisfactory performance from this coating by curing for two hours at 90C after the 4 hour ambient cure. This will give limited resistance to solvents. Military If the assemblies are to be used under conditions of high temperature or be exposed to extremes of thermal cycling, the coating should be cured for 24 hours at ambient followed by 24 hours at 90C. This curing schedule will give resistance to the more aggressive solvents. It is recommended that the coating be thoroughly cured on circuits, which have design areas of very high impedance that require adjustment after application. Inspection DCE contains a UV trace, which allows inspection of the PCB after coating to ensure complete and even coverage. The stronger the reflected UV light, the thicker the coating layer is. UV light in the region of 375nm should be used for inspection. Revision 4: Nov 2016