Selective Coating & Potting

Key Benefits of Conformal Coating:

• Moisture & Chemical Protection – Prevents damage from humidity, condensation, and exposure to harsh chemicals.
• Enhanced Electrical Insulation – Reduces the risk of short circuits by insulating components against unintended electrical paths.
• Improved Thermal & Mechanical Stability – Protects against temperature variations, vibration, and mechanical stress.
• Extended Lifespan – Increases the durability of PCBs, reducing failures and maintenance costs.
• Prevention of Corrosion & Contamination – Shields against dust, salt spray, and other contaminants that can degrade circuit performance.

Selective Coating vs. Traditional Coating Methods

Selective coating offers precise application, reducing material waste and protecting specific PCB areas, while traditional methods coat entire surfaces, often requiring masking. Choosing the right approach depends on design complexity, cost, and performance requirements.

High-Precision Selective Coating for Assembled Circuit Boards

ELITE DIMA DR-070 and CONEXIS CX-3040

The primary advantages of these two machines are their high dispensing speed, accuracy, and consistent performance in applying coating to the assembled circuit board. Additionally, the integrated rotation feature of the robot provides flexibility and speed, allowing for varnishing at angles of up to 60°, making it easy to access hard-to-reach areas.

The combination of high speed and precision enables the simultaneous operation of three valves:

• Needle Valve: Offers extremely high accuracy
• Narrow Beam Spray Valve: Balances high accuracy with high speed
• Curtain Valve: Ensures extremely high accuracy

Other Advantages:

• Equipped with a camera for easy tracking and recording of ongoing processes
• Capable of operating in both inline and batch configurations
• Provides precise control over the dispensed coating
• Eliminates the need for initial protection of sensitive areas on the assembled board

These features make the dispensing robots highly configurable and easy to reconfigure, facilitating efficient coating, dispensing, and assembly operations.

Asymtek SL-940

The Nordson ASYMTEK Select Coat® SL-940 Series conformal coating system is engineered to deliver exceptional quality and efficiency for both automated batch and in-line processes. The system’s robust feature set is built upon ASYMTEK’s unmatched industry expertise in fluid dispensing and conformal coating process control. The system has three applicators.

The model includes Vision System with Fiducial Find Camera and Pattern Recognition System (PRS), Light Beacon Assembly, UV LED, Calibration report with CmK value.

The configuration comprises of:

• Single Lane Conveyor
• Board Pins
• Brush Box for each valve
• Triple-Valve Toggle (requiring one syringe valve)
• Needle Sensor
• Laser Fan Width Control
• Fluid Fittings and Lines
• Support for DV-0x Syringe air
• Fluid Filter
• Material Changeover
• Second Scale Hardware
• Low Fluid Level Scale
• Dual Solvent Cup with Sensor
• Universal Integration for Barcode Reader
• Automatic Conveyor Width Adjustment
• Nordson NE Connect

The functionality of all 3 selective coating systems ensures rapid, precise, and high-quality production as an additional service to our PCB assembly.

Potting Services for Enhanced Circuit Board Protection

We offer professional potting services as part of our comprehensive PCB assembly solutions, providing protection for your electronic components against moisture, dust, and vibration.

The potting process encases electronic components (SMT/THT) in a protective material, typically a resin or silicone compound, and shield them from the environmental factors.

Our advanced potting machines feature a precise dosing and mixing system, ensuring consistent and reliable process.