Toray Achieves UL Certification for Torelina™ A660HV PPS Resin with RTI 200°C and CTI 600V

Certification Achievement

Toray Industries, Inc. has obtained UL certification for its Torelina™ A660HV polyphenylene sulfide (PPS) resin, marking the first material to meet both RTI 200°C and CTI 600V benchmarks. This advancement opens up new applications in power semiconductors and devices requiring high resistance to electrical breakdown and heat.

Performance Benchmarks

The resin achieved a Relative Thermal Index (RTI) of 200°C at a thickness of 0.70 millimeters, as per UL Standards & Engagement. This index indicates the maximum service temperature where the resin's properties remain stable over time. Additionally, it attained a Comparative Tracking Index (CTI) of 600 volts, aligning with the International Electrotechnical Commission's Material Group I standard.

Industry Implications

With the upcoming revision of the UL1557 standard for semiconductor devices in February next year, housing resins will need to match the heat resistance of semiconductor products. This change has driven PPS producers, including Toray, to secure new certifications. Torelina™ A660HV's RTI 200 certification complements its existing RTI 130 rating, ensuring compliance with the new requirements.

Market Applications

Toray plans to enhance marketing efforts for Torelina™ A660HV in sectors demanding high-voltage and high-temperature performance, such as DC power transmission systems and renewable energy infrastructure. This development aligns with the growing need for advanced materials in these industries.