Dowsil 1-2577 Three proof paint circuit board protective paint

Product Basic Attributes​​
Dowsil DC1-2577 is a one-part silicone resin conformal coating designed to provide robust protection for electronic circuit boards and printed wiring boards (PWBs). It cures to form a tough, elastoplastic, and abrasion-resistant surface, offering excellent durability under various environmental conditions. The product is solvent-borne, requires no ovens for curing, and features a UV indicator for automated inspection. It meets several industry standards, including UL 94 V-0, UL 746E, IPC-CC-830, and Mil-I-46058C.

Product Overview​​
Dowsil DC1-2577 Conformal Coating is engineered to deliver reliable protection for rigid and flexible circuit boards, particularly in applications requiring high toughness and abrasion resistance. Its solvent-borne formulation allows for easy application and room temperature curing, with optional mild heat acceleration to speed up the process. The coating’s firm, dry surface after curing ensures better handling and long-term performance. It is suitable for use with low-solids (no-clean) and no-lead solders, making it a versatile choice for modern electronics manufacturing.

Expanded from Basic Properties​
Dowsil DC1-2577 stands out for its unique combination of properties. It cures to a translucent, clear finish, providing visual clarity while maintaining excellent adhesion to a wide range of substrates. The coating’s dielectric strength of 400 volts/mil (16 kV/mm) and volume resistivity of 5E+13 ohm*cm ensure superior electrical insulation. Its low dissipation factor (<0.0002 at 100 kHz) and stable dielectric constant (2.74 at 100 Hz and 100 kHz) make it ideal for high-frequency applications. The product also features a UL 94 V-0 flammability rating, ensuring compliance with stringent safety standards. Additionally, the UV indicator allows for efficient quality control during automated inspection processes.

Application Scenarios​​
Dowsil DC1-2577 is widely used in the electronics industry for protecting circuit boards in harsh environments. Its applications include automotive electronics, aerospace systems, industrial controls, and consumer electronics. The coating is particularly suitable for devices exposed to vibration, moisture, and thermal cycling, as it provides excellent mechanical and environmental protection. For example, in automotive applications, it safeguards electronic components from engine heat, humidity, and road vibrations. In aerospace, it ensures the reliability of avionics systems under extreme temperature variations. The product’s ease of application and fast curing make it a preferred choice for high-volume manufacturing processes.