Case Study of PCB Thin Layer Encapsulation | SIPC 9400 Silicone Rubber Solution

In the field of electronic manufacturing, PCB thin layer encapsulation is a key process. It not only plays a protective role in preventing moisture, shock, and leakage of electronic components, but also takes into account thermal conductivity, insulation, and long-term reliability. PCB thin layer encapsulation Recently, a customer encountered the following difficulties while developing a control circuit module:🔹 Insufficient adhesion of sealing materials can lead to peeling after long-term operation🔹 Traditional adhesives have high viscosity and are difficult to achieve thin layer self leveling and sealing🔹 Poor thermal conductivity, severe heating of local components🔹 The product must meet the UL94-V0 flame retardant rating and RoHS environmental certificationSolution: SIPC 9400We recommend SIPC 9400 two-component condensed RTV silicone rubber to our clients.This material has the following advantages:PCB thin layer encapsulationExcellent adhesion – can bond various materials such as metal, plastic, ceramic, glass, etc. without the need for additional primer; For special materials such as PP and PE, they can be combined with primer or surface treatment to enhance the effect.Low viscosity self leveling – suitable for thin-layer sealing process, good fluidity, easy to operate two-component dispensing machine, can quickly cover PCB surface.Thermal conductivity and flame retardancy – with a thermal conductivity coefficient of 0.6~1.0 W/m · K, it effectively improves heat dissipation efficiency and meets the UL94-V0 flame retardant standard.Flexible and reliable – after curing, it forms a soft elastic body, which has the properties of resistance to cold and hot alternation, aging resistance, electrical insulation, and leakage resistance, and can operate stably and reliably for a long time.Environmental Compliance – Compliant with RoHS environmental standards and adaptable to various electronic product certification requirements. customer benefitsIn practical applications, customers use SIPC 9400 for PCB thin layer encapsulation:✅ Uniform sealing layer, no bubbles, stable process✅ The reliability of the circuit board has significantly…