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Thermally Conductive Potting Compound

Silicone Potting Compound for Home Appliance Controllers: A B2B Selection Guide

2026-10-13

What Is Home Appliance Controller Potting?

Home appliance controllers — the circuit boards inside washing machines, refrigerators, air conditioners, induction cookers and motor drives — are commonly protected by potting. A PCB potting compound based on thermally conductive silicone encapsulates the board, dissipates heat and shields it from moisture, dust and vibration.

Why Potting Matters for Appliance Controllers

Dissipates heat from relays, power devices and IGBTs;
Provides electrical insulation and EMC reliability;
Protects against humidity in kitchens, laundry rooms and outdoor AC units;
Meets household safety requirements with UL94 V-0;
Self-levels to fill dense, uneven boards.

Key Specifications (HN-8830A/B, 3.0 W/m·K)

Property	Value
Thermal conductivity	3.0 ± 0.1 W/m·K
Mix ratio	1:1 by weight
Operating temperature	−40°C to 200°C
Flame retardancy	UL94 V-0
Pot life (100 g mix)	60–180 min

Frequently Asked Questions

Is 3.0 W/m·K potting suitable for high-power appliances? Yes — it is ideal for induction cooker (IH) boards and motor drives.

Does it protect against humidity? Yes — the cured elastomer is waterproof and moisture-proof.

Is it flame retardant? Yes — UL94 V-0.

Conclusion

For home appliance controller makers, silicone potting compound with high thermal conductivity, insulation and UL94 V-0 flame retardancy protects boards from heat and humidity. Shenzhen Hanast New Materials supports B2B partners with samples and technical data.