The newest addition to the hydrolysis resistant family of DuPont Crastin PBT resins achieves a comparative tracking index (CTI) rating of 600V for improved component safety, and adds melt stability for better processing, which often leads to lower costs. The new family — Crastin HR HFS — is also said to allow designers to make components with thinner walls and allows processors to use newer technology as the material stays in the melt state even longer.
Crastin HR HFS is targeted for automotive electric and electronic components and for hybrid and electric vehicles to help meet the ongoing "miniaturisation" trend. The product debuted in high voltage shield connectors for battery packs and inverters.
The Crastin HR HFS family includes Crastin HR5315HFS and Crastin HR5330HFS, with 15 and 30% glass reinforcement respectively, available in natural and laser markable black. Both are impact modified with high strain-at-break values, while retaining the stiffness of a reinforced PBT. They qualify as direct drop-in solutions to replace existing Crastin HR grades in automotive connectors, electronic control units (ECUs) and fuse boxes.
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Korea Electric Terminal (KET), based in Incheon City, South Korea, selected Crastin HR HFS for its 20A 3P and 200A 2P high voltage shield connectors (HVSC). The 20 ampere 3-pin model is used to connect power to auto compressors and electronic control units, while the larger 200 ampere model connects auto battery packs and inverters. (photo: DuPont)
