The Importance of Conformal Coating for PCB Protection

Conformal coating is a thin, protective film applied to PCBs to prevent exposure to harmful elements. It offers benefits like moisture protection, chemical resistance, and temperature stability. By ensuring proper application, it enhances PCB reliability and longevity. For more information on how conformal coating can protect your electronics, visit our website.

1. THE IMPORTANCE OF

CONFORMAL COATING

FOR PCB PROTECTION

2. TRONIC

WHAT IS CONFORMAL COATING?

Conformal coating is a thin protective film
applied to the surface of PCBs. It conforms to
the contours of the board, covering
components and solder joints to prevent
exposure to harmful elements. Various types of
conformal coatings are available, including
acrylic, silicone, epoxy, and urethane, each
offering specific advantages depending on the
application requirements.

3. Brushing: Simple and suitable for small
batches

.Spraying: Common for large-scale
production, ensures even coating
«Dipping: Ensures complete coverage by
immersing the PCB in the coating material.
Selective Coating: Uses automated
equipment for precise application on
specific areas.

4. + Acrylic: Easy to apply and remove,
good moisture resistance.

¢ Silicone: Highly flexible, excellent for
high-temperature environments.

+ Urethane: Offers excellent chemical
resistance and durability.

+ Epoxy: Known for strong adhesion,
good chemical, and abrasion
resistance.

« Parylene: Applied via vapor phase
deposition, provides uniform

coverage and superior dielectric
properties.

5. KEY BENEFITS OF CONFORMAL COATING

Moisture Protection: It prevents corrosion and short circuits by blocking moisture
Chemical Resistance: Shields the PCB against solvents and chemical pollutant

Temperature Stability: Protects PCBs in extreme temperature conditions

Mechanical Protection: Guards against dust, dirt, and mechanical abrasion.

Electrical Insulation: Provides an additional layer of insulation, reducing the risk
of electrical leakage or short circuits.

UV Resistance: Offers protection against UV radiation, which can degrade PCB
components over time, ensuring long-term reliability.

6. CHALLENGES AND LIMITATIONS

e Difficulty in achieving uniform application of the coating across the entire PCB surface during PCB
assembly.

+ Compatibility issues may arise with certain components during PCB assembly, leading to adhesion
problems or compromised performance.

* coating may have limitations in extreme operating conditions, such as very high or low temperatures,
which can affect its effectiveness in providing protection during PCB assembly. Understanding and
addressing these challenges are crucial for mitigating risks and ensuring the successful implementation
of conformal coating in PCB assembly.

7. UNTRONIC

inufacturing S

CONCLUSION

In conclusion, conformal coating plays a critical role in protecting PCBs
and ensuring the reliability of electronic devices. By understanding its
importance, selecting the appropriate coating, and following best
practices in application and maintenance, manufacturers can enhance
product performance, extend lifespan, and ultimately, improve customer
satisfaction.

8. SUNTRONIC INC

At Suntronic, Conformal Coating for PCB Protection represents a fundamental
aspect of our service portfolio. Through our dedication to excellence in customer
service, we ensure optimal outcomes in applying conformal coatings,

safeguarding PCBs against environmental hazards and enhancing their longevity
and reliability.

GET IN TOUCH

@ [phone] suntronicinc.com/

10501 Kipp Way, Ste 350 m wwwiinkedincom/company/
Houston, Texas 77099 suntronic-incorporated/