Standards Hub

This hub brings together SCH’s key guidance on conformal coating and Parylene standards – including IPC-A-610, IPC-CC-830, IEC 60664, UL 746 and NASA workmanship standards. These documents underpin acceptance criteria, material qualification, creepage & clearance design, and long-term reliability for coated electronics.

Use the Standards Hub to understand what each standard covers, how it relates to conformal coating and Parylene,
and where SCH’s own technical articles, training and consulting services map onto those requirements. It is designed to complement topic hubs such as Design, Inspection & Quality and Parylene Coating.

Explore Standards-Based Guides

• The IPC-A-610 Standard and Conformal Coating – how IPC-A-610 defines coating coverage, meniscus, edge definition and defects.
• The IPC-CC-830 Conformal Coating Material Standard – material qualification, test regimes and what they mean for production.

Related topic hubs:
Conformal Coating Design Hub • Inspection & Quality Hub • Parylene Coating Hub

IPC-A-610 is the primary workmanship standard for electronic assemblies. For conformal coating, it
defines the acceptability of coverage, meniscus shape, edge definition, bubbles, voids and contamination
across Classes 1–3. Many OEMs and EMS providers now build IPC-A-610 requirements directly into their PCB and assembly specifications, making it a central reference for coating inspection and quality control.

SCH uses IPC-A-610 to help customers align inspection criteria, UV checks and sampling plans with their
end-customer requirements – reducing disputes at incoming inspection and during audits.

Read SCH’s IPC-A-610 coating guide  • IPC-A-610 training & certification (external)

IPC-CC-830 defines the qualification and performance requirements for conformal coating
materials, including acrylic, urethane, silicone, epoxy, Parylene and hybrid systems. It covers dielectric testing,
insulation resistance, moisture resistance, thermal cycling and other stresses used to validate coating performance.

For OEMs, CC-830 provides confidence that a coating has passed a recognised qualification regime. For coating houses
and in-house lines, it supports material selection, supplier comparison and ongoing QA checks.

Read SCH’s IPC-CC-830 material standard guide  • IPC-CC-830C table of contents (external PDF)

IEC 60664-1 defines insulation coordination for equipment connected to low-voltage systems, including creepage distances, clearances and pollution degree. For conformal coating and Parylene, it is the reference point when engineers discuss “coating credit” – using a qualified coating to reduce spacing while maintaining safety and reliability.

SCH helps design and reliability teams interpret IEC 60664 in the context of coated assemblies, mapping material performance, contamination risk and application method onto practical creepage & clearance rules for PCB layout.

Covered within: Conformal Coating Design Hub  •  IEC 60664-1 publication (external)

The UL 746 series – particularly UL 746E – deals with the safety, thermal and electrical performance of polymeric materials used in electrical and electronic equipment. For conformal coating and Parylene, UL standards are often referenced for:

• Comparing flammability / RTI (Relative Thermal Index) performance
• Supporting product safety submissions and approvals
• Ensuring long-term performance under temperature and environmental stress

SCH uses UL data alongside IPC and IEC requirements when advising on material selection, safety compliance and documentation for regulated markets.

Discuss safety and standards in a consulting call

NASA-STD-8739.1 sets workmanship requirements for polymeric applications, including cleaning, conformal coating and staking for high-reliability electronics. While not mandatory for most commercial programmes, it is widely used as a benchmark for best practice in aerospace, defence and space projects.

Many of SCH’s aerospace and space customers align their internal standards with NASA guidance – especially around cleanliness, masking, coverage control and inspection. SCH supports this by mapping NASA requirements to practical process documentation, training and inspection checklists.

NASA-STD-8739.1 standard (external PDF) • Talk to SCH about high-reliability programmes

Useful Standards & Compliance Links

• 🔗 IPC-A-610 Training & Certification
• 🔗 IPC – Industry Standards & Documents
• 🔗 IEC Webstore – International Standards (IEC 60664, etc.)
• 🔗 NASA-STD-8739.1 – Polymeric Applications
• 🔗 SCH Conformal Coating Consultation
• 🔗 Technical Articles (Knowledge Hub)

Need Help Navigating Standards & Compliance?

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Conformal Coating, Parylene & ProShieldESD Solutions with equipment, materials and training — backed by
decades of hands-on experience with IPC, IEC, UL and NASA-driven programmes.

• ✈️ 25+ Years of Expertise – Trusted across aerospace, medical, defence, automotive and industrial electronics.
• 🛠️ End-to-End Support – From standards interpretation and design rules to process setup, inspection and documentation.
• 📈 Scalable Solutions – From single-board evaluations to full production audits and benchmarking.
• 🌍 Global Reach – Support from SCH UK and India for worldwide customers and supply chains.
• ✅ Proven Reliability – Consistent, standards-aligned results across services, equipment and materials.

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Note: This article provides general technical guidance only. Final design, safety, and compliance decisions must be verified by the product manufacturer and validated against the applicable standards.