Best method for applying HumiSeal coating

The best method for applying HumiSeal conformal coating, manufactured by Chase Corporation, depends on production volume, PCB complexity, and quality requirements. However, in modern PCB Assembly, SMT Assembly, and Turnkey PCB Assembly, the selective conformal coating method is generally considered the best overall solution.

Best overall method: Selective conformal coating

Selective coating uses automated, programmable machines to apply coating only where needed.

Why it is the best choice:

• High precision → Coating is applied only to target areas
• Minimal masking required → Saves labor and time
• Consistent thickness control → Improves reliability
• Repeatability → Ideal for mass production in SMT Assembly
• Reduced material waste → More cost-efficient long term

This method is widely used in high-end Turnkey PCB Assembly lines.

Other application methods and when to use them

Spray coating (manual or automated)

• Good balance between cost and quality
• Suitable for medium to high volume production
• Requires masking for connectors and sensitive areas
• Common in general PCB Assembly

Dip coating

• Provides full coverage, even in hard-to-reach areas
• Suitable for simple board designs
• Can lead to thicker, less controlled coating
• Higher material usage

Brush coating

• Best for repair, rework, or prototyping
• Low cost but highly dependent on operator skill
• Not suitable for mass production

Which method should you choose

• High-volume, high-precision products → Selective coating (best choice)
• Mid-volume or simpler designs → Spray coating
• Full coverage requirement → Dip coating
• Repair or small batch → Brush coating

Key factors in choosing the best method

• PCB design complexity
• Production scale
• Required coating thickness and uniformity
• Cost vs performance balance

Conclusion

Selective conformal coating is the best method for applying HumiSeal coating in most modern PCB Assembly, SMT Assembly, and Turnkey PCB Assembly environments due to its precision, consistency, and efficiency. However, the optimal choice ultimately depends on your specific application and production needs.

We support HumiSeal and equivalent conformal coating solutions for your PCBA projects.

Get a Conformal Coating Quote

From prototype to mass production, we provide conformal coating services. Get your quote now.
Send us your requirements and get a fast response from our engineering team.

✔ 24-hour response    ✔ Engineering support    ✔ Small & Mass Production

Please enable JavaScript in your browser to complete this form.

Name *

Email *

upload Message File

WhatsAPP

Preferred Material

• Acrylic (AR)
• Silicone (SR)
• Polyurethane (UR)
• UV Curable - UV
• I'm not sure / Need advice

File upload

Drag & Drop Files, Choose Files to Upload You can upload up to 8 files.

Please compress all Gerber files, Drill files, and BOM into a single .ZIP or .RAR file for faster processing.

Message

"Please list components or areas that must NOT be coated (e.g., connectors, test points)." If you have specific coating material requirements (e.g., HumiSeal), Please indicate this in the comment box.

Submit

Shenzhen Tengxinjie Electronics Co., Ltd.