Conformal Coating & Potting

Electronic assemblies operating outside controlled environments face relentless threats: condensation, chemical spills, airborne contaminants, thermal cycling, and vibration. Conformal coating and potting are not merely finishing steps; they are critical reliability-enhancing processes that create a protective barrier, preventing dendritic growth, corrosion, and electrical shorts. At SENTAK, we engineer these protections with precision, ensuring your products achieve extended service life in automotive, industrial, marine, and outdoor applications.

The choice depends on the level of environmental exposure and required mechanical robustness.

1. Conformal Coating Processes

We match the application method to your board's geometry and production volume.

Selective Robotic Coating: For high precision and throughput. Masks connectors and test points with micron-level accuracy.

Dip Coating: For full, uniform coverage on high-volume boards.

Spray Coating(Manual/Automated): A versatile solution for complex geometries or mixed-technology boards.

Masking&Depaneling Expertise: We design and implement effective masking strategies to keep critical areas coating-free.

2. Potting&Encapsulation

For total protection, we fill enclosures with resilient compounds.

Vacuum Potting: Eliminates air bubbles for maximum dielectric strength and thermal conductivity.

Dual-Cartridge Dispensing: For precise mixing and application of two-part epoxies or silicones.

Material Selection Support: We guide you through the trade-offs between silicones(flexible, wide temp range), epoxies(rigid, high strength), and polyurethanes(balanced).

3. Key Material Classes

Success starts on the drawing board.Collaborate with us early to optimize your design.

Avoid Sharp Edges: They cause coating thinning.Use rounded corners where possible.

Define Keep-out Areas: Clearly specify connectors,test points,heat sinks,and optical components that must remain uncoated.

Consider Component Height Variation: Potting compounds flow;tall and short components can lead to uneven stress or air pockets.

Plan for Stress Relief: Potting compounds expand and contract.Use flexible compounds or design features to prevent stress on solder joints.

Pro Tip: Submit your design for a Free DFP Review.We'll identify potential issues like capillary draw into connectors or thermal management conflicts.

Our services are critical for:

Automotive&Transportation: Under-hood controls,sensor modules.

Industrial Electronics: Factory automation,outdoor instrumentation.

Lighting: Harsh-environment LED drivers and fixtures.

Consumer&Marine: Wearables,marine electronics,outdoor tech.

Medical&Mil/Aero: Devices requiring extreme reliability.

Our processes are designed for reliability and auditability.