Electrolube DCR Red Opaque Modified Alkyd Conformal Coating — PCB Design Camouflage & Military-Spec Protection

Electrolube presents the DCR SCC3 Red Opaque Modified Alkyd Conformal Coating, the specialist red-opaque variant of the proven DCA modified alkyd formulation. DCR is engineered for printed circuit board (PCB) assemblies where concealment of circuit layout is required alongside compliance with the most stringent European and US defence standards.

Based on a flexible modified alkyd resin, DCR cures to form a tough, red opaque film (typical thickness 25–75 μm) that masks PCB design details while protecting solder joints and conductors from moisture, salt spray, fungal growth, and aggressive solvents common in aerospace and automotive environments. The coating is RoHSCompliant, meets IPC-CC-830, is UL 746CRecognized (File QMJU2), and conforms to DEF-STAN 59/47 Issue 4​ / MIL-I-46058C​ requirements. It operates reliably from -70°C to +200°C, with dielectric strength of 90 kV/mm and surface insulation resistance ≥1*10¹⁵ Ω.

• PCB Design Camouflage: Opaque red finish conceals trace routing and component placement—ideal for IP-sensitive or secured electronics.
• Extreme Environment Endurance: Proven thermal cycling performance; suitable for avionics, under-hood automotive, and outdoor/marine exposures.
• Solvent & Chemical Resistance (Heat-Cured): After recommended schedule (2 h ambient flash-off + 2–24 h @ 90–120°C heat cure), resists fuels, hydraulic fluids, lubricants, and common cleaning solvents.
• Reworkable: Selectively removable using Electrolube CCRG Conformal Coating Remover Gel; solder-through capability for localized rework.
• Application Versatility: Spray (thin with DCT thinners, typical DCR:DCT = 2:1), dip coat (viscosity 180–250 mPa·s), or brush apply. Available in 200 ml Aerosol (DCR200H), 1 L (DCR01L), and 5 L (DCR05L) bulk packs.

• Defence & Avionics: Tactical comms equipment, flight control modules—layout concealment + thermal/humidity cycling resistance.
• Automotive Electronics: Engine ECUs, transmission control modules, EV DC-DC converters—protection against under-hood heat, salt spray, and fluid splash.
• Industrial & Offshore: PLCs, VFDs in marine or coastal environments—resistance to saline and corrosive industrial atmospheres.

For optimum adhesion, boards should be thoroughly cleaned with Electrolube aqueous or solvent-based PCB cleaners to remove flux residues prior to coating. DCR is fully supported by compatible DCT thinners and CCRG removal gel as part of a complete conformal coating process system.