Parylene Coating Services:
The Ultimate Protection
for Mission-Critical Electronics.
True vacuum-deposited encapsulation. Achieve superior dielectric strength, chemical resistance, and biostability without the bulk of traditional potting.
Beyond Spraying: The Chemical Vapor Deposition Advantage
Unlike liquid coatings (spray, dip, or brush) that can pool, bridge, or leave voids, Parylene is applied as a gas in a vacuum chamber. The monomer gas polymerizes on the surface at room temperature, forming a uniform, pinhole-free film.
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Zero Pinhole Coverage
Gas penetrates every crevice, under components, and sharp edges uniformly.
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Micron-Level Precision
Controlled thickness from 0.1µm to 50µm without adding significant weight or thermal mass.
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No Curing Stress
Room temperature polymerization eliminates thermal expansion stress on sensitive sensors.
Vacuum Deposition Chamber
State-of-the-art automated coating systems at ACE Tech.
Parylene vs. Traditional Coatings
Why engineers switch from Acrylic, Silicone, and Urethane to Parylene for critical applications.
| Properties | Parylene (XY) | Acrylic (AR) | Silicone (SR) |
|---|---|---|---|
| Application Method | Vacuum Deposition (Gas) | Spray / Dip / Brush | Spray / Dip |
| Uniformity | Perfect (Even on edges) | Fair (Pools in corners) | Variable (Thick) |
| Dielectric Strength | High (~5-7 kV/mil) | Moderate | Moderate |
| Moisture Barrier | Excellent (Hydrophobic) | Good | Good |
| Biocompatibility | USP Class VI (Implantable) | Low | Variable |
Parylene C
The Barrier Specialist
The most widely used variant due to its excellent electrical and physical properties. It provides a superior barrier against corrosive gases, moisture, and vapor.
Parylene N
The High-Frequency Specialist
Selected for its high dielectric strength and a dielectric constant that is independent of frequency. Ideal for RF and microwave applications.
State-of-the-Art Coating Facility
Automated Vacuum Chambers
Precise pressure and temperature control for consistent deposition.
Silane Adhesion Promotion
Ensuring molecular-level bonding to the substrate.
Precision Masking
Manual and automated masking for connectors and test points.
QC Laboratory
Spectral thickness measurement and adhesion testing.
Industries We Serve
Medical Devices
USP Class VI certified protection for implants, catheters, and diagnostic equipment. Resists sterilization processes and bodily fluids.
ISO13485 CompliantAutomotive & EV
Protects BMS (Battery Management Systems) and sensors from salt spray, fuel fumes, and thermal shock in harsh road environments.
IATF16949 StandardsIndustrial & Aerospace
Lightweight protection for avionics and heavy machinery controls. Prevents corrosion from sulfur and extreme atmospheric conditions.
Rugged ReliabilityParylene in Action
Deep-Sea Sensor Array
Challenge: A German client needed sensors to operate at 200m depth. Standard urethane coatings failed due to water pressure ingress.
Solution: We applied 25µm Parylene C. The conformal nature completely sealed the sensitive MEMS components without affecting their vibration sensitivity.
Implantable Glucose Monitor
Challenge: A US startup required a coating that was biocompatible and extremely thin to fit within a needle-deployable housing.
Solution: Parylene N was selected for its lubricity and bio-inert properties. We developed a custom masking fixture to protect the electrode tips.
Why Partner with ACE Tech?
Most EMS providers outsource Parylene coating, adding cost, delay, and risk. At ACE Tech, it's all under one roof.
- One-Stop Turnkey Solution (PCB + Assembly + Coating)
- Faster Lead Times (No transit between factories)
- Unified Quality Control & Accountability
Yield Rate
99.8%
Consistently achieved on high-mix, low-volume orders.
Engineering a device for a harsh world?
Don't let environmental failure compromise your brand. Let our engineering team review your requirements and recommend the perfect coating strategy.