SMD adhesives

• Suitable for electronics
• High wet tack
• Fast curing

SMD adhesives (adhesives for Surface Mount Devices) are 1-component products that are applied to printed circuit boards (PCBs) by dispensing or via stencils. After applying the adhesive dots, electronic components can be placed and the adhesive cured at elevated temperature.

Bonding the electronic components can serve 2 purposes:
- Keeping the components in place during the reflow soldering process.
- Mechanical reinforcement of the component on the PCB, preventing stress on the solder joints.

During the automated process, adhesive properties such as viscosity, flow behaviour, wetting of the component, and (wet) tack are important characteristics. These properties are measurable, and products have been developed with application-specific performance in mind. Temperature has a major influence during adhesive application and placement of the electronic components.

The choice of the most suitable product depends on the size/type of components, application (dispensing/stencil printing), curing, and the application environment.

With the 2040 SMD adhesive series, Permacol offers a product that complies with REACH and RoHS and is free of CMR labels. The Permacol 2040 series does not string, has high wet tack after component placement, a broad operating temperature range, and after curing provides good resistance to shock and vibration, with high shear strength.