SABIC Introduces PPS Compounds Designed for 800 V EV Power Module Insulation
The two new LNP THERMOCOMP grades target high-voltage inverters and fast chargers with CTI PLC 0 rating.
SABIC has introduced two polyphenylene sulfide (PPS) compound grades engineered to insulate high-voltage power modules in electric vehicles, including the insulated-gate bipolar transistor (IGBT) switching devices used in 800 V and higher traction inverters.
What Happened
The new LNP THERMOCOMP OFM76XXP and OFM76EXP compounds carry a comparative tracking index (CTI) of PLC 0—the highest CTI class—along with dielectric strength for electrical insulation and UL94 V0 flame retardancy down to a 0.4 mm wall thickness. SABIC states the materials retain 90% of their strength and insulation capability after 1,000 hours of heat aging at 200°C. The company claims they offer better dimensional stability and resistance to thermal shock compared with polybutylene terephthalate (PBT) and polyphthalamide (PPA) alternatives. Both grades are available globally, with the OFM76EXP variant offering enhanced laser-marking capability, adhesion to silicone-based sealants, and what SABIC describes as the highest impact strength among comparable materials.
Why It Matters
800 V electrical architectures are becoming standard in modern EVs because they enable faster DC fast charging and reduce current-related losses. Higher voltages demand stronger insulation performance from power electronics components like IGBT modules, where tracking—surface breakdown that creates conductive paths across an insulator—can cause failure. SABIC's new PPS compounds address this with properties specifically rated for 800 V systems. The materials also support thinner, lighter component designs and can be molded in light colors to keep QR codes on IGBTs legible during assembly and service.
The Bottom Line
SABIC's OFM76XXP and OFM76EXP compounds are now available globally as material options for manufacturers designing power electronics for 800 V EVs, fast chargers, and related applications. Potential uses extend beyond automotive to DC power transmission systems, high-voltage breakers, integrated busbar brackets, and renewable energy infrastructure.
