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 Montagem de PCB, Montagem SMT, e Montagem de PCB pronta para uso 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.
Principais vantagens
Alta precisão
- Coating is applied only where needed
- Protects critical components without affecting connectors
Redução do mascaramento
- Minimal use of tapes or boots
- Saves time and labor in Montagem de PCB
Qualidade consistente
- Uniform coating thickness (typically 25–75 µm)
- High repeatability in Montagem SMT
Economia de material
- Less coating waste compared to dip or full spray methods
Faster production
- Ideal for high-volume Montagem de PCB pronta para uso linhas
Aplicações típicas
Selective coating with HumiSeal is used in:
- Eletrônica automotiva
- Sistemas de controle industrial
- LED lighting PCBs
- Eletrônicos de consumo
- Aerospace and medical devices
These applications require both protection and precision.
Selective coating vs traditional methods
- Revestimento seletivo → precise, automated, minimal masking
- Revestimento em spray → broader coverage, requires masking
- Revestimento por imersão → full coverage, less control
- Revestimento com pincel → manual, used for rework
Selective coating is considered the most advanced method in Montagem 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
Conclusão
Selective coating with HumiSeal is a high-precision, automated method that applies conformal coating only where needed. In Montagem de PCB, Montagem SMT, e Montagem de PCB pronta para uso, it offers superior efficiency, consistency, and cost control compared to traditional coating methods.
We support HumiSeal and equivalent revestimento isolante solutions for your PCBA projects.
Obter uma cotação de revestimento isolante
Procurando soluções confiáveis de revestimento isolante para seu projeto de PCBA? Clique abaixo para obter uma cotação rápida.
Envie-nos seus requisitos e receba uma resposta rápida de nossa equipe de engenharia.
Resposta 24 horas ✔ Suporte de engenharia ✔ Produção pequena e em massa
Shenzhen Tengxinjie Electronics Co., Ltd.


