Thickness of HumiSeal coating

The typical thickness of HumiSeal conforme coating, produced by Chase Corporation, ranges between 25 µm and 75 µm (microns). This range is widely used in PCB-assemblage, SMT-assemblage, en Turnkey PCB-assemblage to balance protection, performance, and cost.

Standard thickness range

Most HumiSeal coatings are applied within:

• 25–50 µm → Common for general electronics protection
• 50–75 µm → Used in harsher environments (high humidity, chemicals, vibration)

This thickness is enough to provide effective insulation and environmental protection without affecting component function.

Thickness depends on coating type

Different HumiSeal chemistries may require slightly different thicknesses:

• Acrylcoatings → typically 25–50 µm
• Urethaan coatings → often 30–75 µm for stronger chemical resistance
• Siliconencoatings → may go thicker (up to ~100 µm) for high-temperature or flexible applications

Application method impact

The final coating thickness also depends on how it is applied:

• Spray coating (manual or selective) → most consistent thickness control
• Dompelcoating → thicker and less uniform layers
• Kwastcoating → less precise, used for rework or small batches

Automated selective coating systems in SMT-assemblage lines ensure more consistent thickness control.

Why thickness matters

Proper coating thickness is critical:

• Te dun
  • Insufficient moisture and corrosion protection
  • Lower insulation performance
• Te dik
  • Risico op scheuren of delaminatie
  • Can affect connectors, test points, or heat dissipation

Maintaining the correct thickness ensures optimal reliability in PCB-assemblage.

Industry standards reference

Typical thickness guidelines follow standards such as:

• IPC-CC-830 (qualification for conformal coatings)
• Internal process specs in Turnkey PCB-assemblage manufacturing

These standards help ensure consistent coating quality and performance.

Conclusie

HumiSeal conformal coating is usually applied at 25–75 µm thickness, depending on material type, environment, and application method. In PCB-assemblage, SMT-assemblage, en Turnkey PCB-assemblage, controlling coating thickness is essential for achieving reliable protection without compromising performance.

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Aanbevolen materiaal

• Acryl (AR)
• Silicone (SR)
• Polyurethaan (UR)
• UV-uithardbaar - UV
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