Conformal Coating & Potting - Protective Solutions for Harsh Environments

JosephSan offers professional conformal coating and potting services as part of our Printed Circuit Board Assembly (PCBA) capabilities, helping our customers build reliable, long-lasting electronics ready for the real world.

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What is Conformal Coating?

 

Conformal coating is a thin, protective polymer layer applied to the surface of a fully assembled PCB. Its role is to shield the components and copper traces from moisture, dust, chemicals, and other contaminants without affecting the board’s electrical performance or accessibility.

 

Common Types of Conformal Coating

 

• Acrylic Coatings – Easy to apply and remove; offers good general protection

• Silicone Coatings – Excellent flexibility and resistance to temperature extremes

• Polyurethane Coatings – Offers strong chemical resistance and good mechanical strength

 

Application Methods

 

• Selective Coating Machines

• Manual Brushing (for low-volume or specific areas)

• Dipping & Spraying Techniques

 

What is Potting?

 

Potting encases a PCB or components in a solid or semi-solid compound, typically inside a casing or mold. It provides a deeper level of protection, offering moisture sealing, electrical insulation, and physical stability under extreme conditions.

 

Potting Materials

 

• Epoxy – Durable, rugged, and highly resistant to mechanical and thermal stress

• Silicone – Soft and flexible, ideal for vibration-sensitive applications

• Polyurethane – Good chemical resistance and shock absorption

 

 

Benefits of JosephSan’s Coating & Potting Services

 

• Moisture Resistance – Ideal for humid environments or high-condensation zones

• Dust & Contaminant Protection – Safeguards against conductive particles and corrosion

• Thermal & Mechanical Stability – Withstanding vibration, shock, and temperature fluctuations

• Extended Product Lifespan – Reduces failure rates and maintenance costs

• Improved Electrical Isolation – Prevents arcing and leakage current in high-voltage designs

 

Our services are trusted across applications in:

 

• Automotive Electronics – engine control units, lighting modules

• Medical Devices – portable diagnostics, wearable tech

• Industrial Automation – sensors, motor drives

• Consumer Electronics – kitchen appliances, smart devices

 

Precision Application & Quality Assurance

 

We ensure accurate application through:
 

• Masking for connectors and non-coating zones

• Controlled coating thickness as per IPC-CC-830 and MIL-I-46058C standards

• UV inspection for full coverage validation

• Custom cure profiles for optimal adhesion and long-term stability

 

We treat every board with care, ensuring protection without compromise.

 

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Why Choose JosephSan?

 

• Experienced handling of critical PCBs

• Cleanroom-ready coating & potting processes

• Support for both prototypes and production runs

• Planned investments in advanced coating machines and automated potting systems

 

We believe electronics should be built to last, and we’re committed to helping our clients achieve this.