How to Select the Right Silicone Potting Compound

Silicone potting compounds provide flexible, durable protection for electronic assemblies. TENSAN offers a comprehensive range of formulations, but choosing the right one requires evaluating your specific application needs.

What to Consider

• Thermal Management: Power electronics and LED drivers generate heat. Select thermally conductive grades (1.0+ W/m·K) for effective heat dissipation.
• Optical Requirements: Transparent compounds maintain light output for LEDs and optical sensors. Pigmented options like black or gray are more cost-effective when clarity is not needed.
• Hardness Level: Softer silicones (Shore A 10–30) absorb stress and protect delicate components. Firmer grades (Shore A 40–60) offer better structural support.
• Cure Chemistry: Addition-cure systems provide precise control and minimal shrinkage. Condensation-cure types release byproducts and may require ventilation.
• Flame Retardancy: For safety-critical electronics, verify UL94 V-0 certification.

 Application Guide

Processing Tips

• Mix accurately: Two-component systems require correct ratios
• Remove air: Vacuum degassing prevents voids that reduce insulation
• Cure properly: Follow recommended temperature and time settings

TENSAN provides tailored solutions for diverse industries. Prioritize performance specifications over price, test on actual substrates, and follow proper processing for reliable results.