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Thermally Conductive Silicone Potting for EV DC-DC Converters and Automotive Electronics

2026-10-13

Latest company news about Thermally Conductive Silicone Potting for EV DC-DC Converters and Automotive Electronics
What Is EV DC-DC Converter Potting?

Potting is the process of encapsulating an electronic assembly in a protective compound. In electric vehicles (EVs), DC-DC converter potting protects the power electronics that convert high-voltage battery power to lower voltages. A thermally conductive silicone potting compound with high conductivity is used so heat is carried away from power devices while the module is insulated and sealed.

Why Automotive and EV Electronics Need High Thermal Conductivity
  • Power devices such as IGBTs and MOSFETs generate concentrated heat;
  • Engine-bay and inverter environments reach high temperatures;
  • Modules undergo continuous thermal cycling and vibration;
  • Safety standards require flame-retardant materials (UL94 V-0);
  • Reliability over years of service is essential.
Key Specifications for EV & Automotive Potting (HN-8830A/B)
PropertyValue
Thermal conductivity3.0 ± 0.1 W/m·K
Mix ratio1:1 by weight
Operating temperature−40°C to 200°C
Flame retardancyUL94 V-0
Volume resistivity≥1.0 × 1014 Ω·cm
Heat cure30 min at 80°C
Frequently Asked Questions
What thermal conductivity is best for EV DC-DC converters?

High-power modules typically use 3.0 W/m·K compounds such as HN-8830A/B.

What temperature range is required?

Automotive potting should cover at least −40°C to 200°C.

How is cure inhibition avoided?

Keep substrates and tools free of tin, sulphur, amines, acids and solder-flux residues.

Conclusion

For EV DC-DC converters and automotive electronics, a thermally conductive silicone potting compound with 3.0 W/m·K conductivity, UL94 V-0 and −40°C to 200°C stability delivers the heat management and reliability that OEMs demand. Shenzhen Hanast New Materials supports B2B partners with samples and application guidance.

Units 1210-1211, Block B, Building 6, Hengda Fashion Valley, Dalang Street, Longhua District, Shenzhen, Guangdong Province, China E-mail: sales11@hanastsilicone.com Tel: +8613670122311 Tel: +8613670122311
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