Conformal Coating
Service
PCBLion delivers precision conformal coating solutions — from parylene vapor deposition to selective spray — engineered to shield your assemblies against moisture, chemicals, and mechanical stress.
Four Ways We Coat Your PCBs
We match the application method to your production volume, component geometry, and protection requirements.
Brush Coating
Manual selective application — ideal for rework, repairs, and low-volume projects requiring precise coverage control.
Dip Coating
Full PCB immersion delivers fast, uniform coverage across all surfaces. Best suited for high-volume complete-board protection.
Spray Coating
Automated selective spray provides pinhole-free, high-quality finish with precise masking. Preferred for larger or complex assemblies.
Vapor Deposition
Chemical vacuum polymerization seals every surface — including LEDs — with ultra-thin, pinhole-free parylene at ambient temperature. Maximum permeation barrier.
Our Coating Formulations
All materials are RoHS, REACH, and UL compliant. Select the right film for your application’s weight, thermal, and chemical requirements.
Lightweight parylene film optimized for weight- and thickness-sensitive assemblies. Visible under UV for fast, thorough post-coat inspection. Excellent chemical, electrical, and mechanical performance.
High-purity Parylene C dimer delivering the same superior performance as Blue Spark™ without UV tracer material — ideal for applications where UV additives are restricted.
Advanced epoxy resin potting compound providing full operational protection with superior reliability vs. standard electronic potting materials. Ideal for harsh-environment encapsulation.
State-of-the-art underfill material engineered to protect BGAs, LGAs, and high-heat components from thermal cycling stress and significant heat signatures.
Beyond our proprietary lines, PCBLion works with the full spectrum of conformal coating chemistries to match your specification exactly.
End-to-End Inspection & Coating
Every assembly goes through a structured, documented process before and after coating application.
① Single-layer metal core PCB
Each assembly is inspected against our surface cleanliness specifications before any coating is applied.
② Plasma Cleaning
Assemblies that don't meet cleanliness standards are cleaned using custom plasma processes to ensure optimal adhesion.
③Material & Process Selection
Our engineers select the right coating material and develop a custom procedure tailored to your specific assembly.
④Masking & Application
Critical areas are precisely masked. Coating is applied using the specified method with full process control documentation.
⑤Cure Post-coat Inspection
After curing, every coated assembly undergoes rigorous inspection, including UV light examination, to verify complete and uniform coverage.
The PCBLion's Conformal Coating Service Advantage
NADCAP, AS9100 & NASA-certified services — built for the most demanding industry standards
Continuously evolving material application processes with rigorous safety protocols at every step
Quality-first approach built on transparent, honest communication throughout every project
A CIP culture that drives better outcomes, for your assemblies and our long-term partnership
Why Engineers Switch to Us
“PCBLion’s coating process caught surface contamination issues two other vendors overlooked — protecting our medical assembly from field failure.”
— Hardware Engineer, Medical Device Manufacturer
Frequently Asked Questions
What is conformal coating and why does my PCB need it?
Conformal coating is a protective film applied to populated circuit boards to shieldthem from moisture, dust, chemicals, and mechanical stress. It’s essential forelectronics operating in harsh or safety-critical environments – from aerospace andautomotive to medical devices.
Do you offer coating removal and rework?
Yes. We provide conformal coating removal and stripping services for rework orcomponent access. We work to your exact specifications using chemical, plasma,and mechanical methods – carefully selected based on coating type to avoiddamaging underlying circuitry.
Can you coat fully assembled and tested boards?
Yes. We accept fully populated and tested assemblies for post-assembly coating.Our process includes cleaning, masking of keep-out zones, coating, cure, and final UVinspection – fully documented for traceability.
How do I choose the right coating for my application?
Key factors include operating environment (moisture level, chemical exposure,temperature range), PCB geometry, thickness or weight constraints, productionvolume, and regulatory requirements. Our engineers will review your specificationsand recommend the optimal coating and application method for your project.
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