Selective coating with HumiSeal
Selective coating with HumiSeal conformal coating, developed by Chase Corporation, is an automated process that applies coating only to specific areas of a PCB, rather than covering the entire board. It is widely used in modern Montaje de PCB, Montaje SMT, y Montaje de PCB llave en mano for precision and efficiency.

How selective coating works
Selective coating systems use programmable equipment to control exactly where the coating is applied:
- CAD data or teaching programs define coating paths
- Robotic valves or spray heads dispense HumiSeal precisely
- The machine avoids connectors, test points, and sensitive areas
- Coating is applied in controlled patterns and thickness
This eliminates the need for extensive manual masking.
Principales ventajas
Alta precisión
- Coating is applied only where needed
- Protects critical components without affecting connectors
Enmascaramiento reducido
- Minimal use of tapes or boots
- Saves time and labor in Montaje de PCB
Calidad constante
- Uniform coating thickness (typically 25–75 µm)
- High repeatability in Montaje SMT
Ahorro de material
- Less coating waste compared to dip or full spray methods
Faster production
- Ideal for high-volume Montaje de PCB llave en mano líneas
Aplicaciones típicas
Selective coating with HumiSeal is used in:
- Electrónica del automóvil
- Sistemas de control industrial
- LED lighting PCBs
- Electrónica de consumo
- Aerospace and medical devices
These applications require both protection and precision.
Selective coating vs traditional methods
- Revestimiento selectivo → precise, automated, minimal masking
- Revestimiento por pulverización → broader coverage, requires masking
- Revestimiento por inmersión → full coverage, less control
- Revestimiento con cepillo → manual, used for rework
Selective coating is considered the most advanced method in Montaje SMT.
Important process considerations
- Proper PCB cleaning before coating
- Correct viscosity settings for the machine
- Accurate programming of coating paths
- Post-coating curing (UV, thermal, or moisture)
- Inspection for coverage and defects
Conclusión
Selective coating with HumiSeal is a high-precision, automated method that applies conformal coating only where needed. In Montaje de PCB, Montaje SMT, y Montaje de PCB llave en mano, it offers superior efficiency, consistency, and cost control compared to traditional coating methods.
We support HumiSeal and equivalent revestimiento de conformación solutions for your PCBA projects.
Obtenga un presupuesto de revestimiento de conformación
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Shenzhen Tengxinjie Electronics Co.


