PBT vs PA66: Connector Material Selection Is Being Rewritten in the 800V Fast-Charging Era(2025-2026)

EV high-voltage connector close-up for 800V fast charging, illustrating PBT vs PA66 material selection

Quick Summary: In late 2025, connector material selection for 800V fast-charging systems is shifting from a simple “high temperature = PA66” rule to a failure-mode decision between PBT and PA66. New halogen-free FR PBT messaging targets hot-wet durability, hydrolysis resistance, tracking resistance (CTI), thin-wall flame performance, and reduced electrochemical sensitivity—areas that increasingly define HV connector […]