Conformal Coating Inspection & Quality Hub

This conformal coating inspection hub groups our technical resources on PCB coating inspection and quality assurance. It covers standards alignment, UV inspection for coverage and edge definition, and thickness verification using coupons, AQL, and SPC methods.

External resources: See IPC-CC-830, UL 746E, and NASA Workmanship Guidelines.

Infographic of conformal coating inspection steps including standards, UV inspection for coverage, and thickness verification with coupons and SPC.

Conformal Coating Inspection: Standards & Methods

Inspection ensures conformal coating meets IPC, UL, and customer requirements. Methods include visual checks under UV and white light, adhesion testing, and thickness measurement for compliance.

  • IPC-A-610 for workmanship standards.
  • UL 746E for dielectric properties.
  • Adhesion via tape pull or cross-hatch tests.

↑ Back to Index · Read Full Article

UV (UVA) Inspection: Coverage & Edge Definition

UV inspection highlights coating presence and edge quality. It is critical for verifying keep-out zones and identifying thin or missing coverage.

  • Detects overspray, voids, or bridging.
  • Confirms edge definition and masking performance.
  • Uses UVA lamps or enclosed UV inspection booths.

↑ Back to Index · Read Full Article

Thickness Verification Plans (AQL, Coupons, SPC)

Thickness checks ensure the coating meets electrical clearance and environmental protection requirements. Plans typically use coupons and statistical sampling aligned with AQL.

  • Dry film gauges and optical monitors for accuracy.
  • Use of witness coupons alongside production boards.
  • SPC charts to monitor consistency and identify drift.

↑ Back to Index · Read Full Article

Explore Topic Hubs

Conformal Coating Processes Hub
Explore core conformal coating processes—spray, dip, selective robotic, and Parylene. Compare strengths, limits, and selection tips to match volume, cost, and reliability.

Open ↗

Equipment & Application Methods Hub
Configure application equipment—spray guns & booths, dip systems, and selective valves/robots. Standardise recipes and fixtures to stabilise throughput and yield.

Open ↗

Masking Hub
Master masking strategies for keep-outs: dots & tapes, reusable boots, custom shapes, and latex sealing. Apply barrier vs shielding correctly for spray, dip, and Parylene.

Open ↗

Inspection & Quality Hub
Build a robust inspection & quality plan: UV coverage checks, thickness verification (AQL, coupons, SPC), adhesion tests, and documentation aligned to IPC/UL.

Open ↗

Removal & Rework Hub
Choose the right removal & rework method: wet stripping for liquid coatings, precision micro-abrasion for Parylene, and controlled repair workflows that protect pads & leads.

Open ↗

Parylene Coating Hub
Dive into Parylene coating: dimer grades, deposition parameters, vapour-phase masking, and optical thickness control. See when Parylene outperforms liquid coatings.

Open ↗

Defects & Failure Mechanisms Hub
Prevent common coating defects—pinholes, dewetting, orange peel, cracking, delamination, corrosion/ionic contamination, and wicking—with root-cause fixes.

Open ↗

Why Choose SCH Services?

Partnering with SCH Services means more than just outsourcing — you gain a complete, integrated platform for
Conformal Coating, Parylene & ProShieldESD Solutions, alongside equipment, materials, and training, all backed by decades of hands-on expertise.

  • ✈️ 25+ Years of Expertise – Specialists in coating technologies trusted worldwide.
  • 🛠️ End-to-End Support – Guidance on coating selection, Parylene grades, inspection, and ProShieldESD integration.
  • 📈 Scalable Solutions – From prototype batches to high-volume production, SCH grows with your needs.
  • 🌍 Global Reach – Responsive support across Europe, North America, and Asia.
  • ✅ Proven Reliability – Built on quality, consistency, and customer satisfaction.

📞 Call: +44 (0)1226 249019
✉ Email: sales@schservices.com
💬 Contact Us ›