Extruded Insulations for Litz Conductors

Extruded Insulation	Maximum Temperature	Common Use	Advantages
ETFE	155°C	Thin wall winding wire High frequency interconnect Primary in multi-conductor	Good winding characteristics Better at tight bend than other fluropolymers Excellent heat resistance Excellent water/chemical resistance
FEP	200°C	Thin wall winding wire High frequency interconnnect Primary in multi-conductor	Excellent heat resistance Outstanding water/chemical resistance Outstanding flame retardancy Low outgas
PFA	250°C	Thin wall winding wire High frequency interconnect Primary in multi-conductor	Excellent heat resistance Outstanding water/chemical resistance Outstanding flame retardancy Low outgas
PE/PP	75°C	Litz Coax / Triax	Very good dielectric properties Outstanding water resistance
PVC	105°C	Winding wire High frequency interconnect Primary in multi-conductor	Least expensive Excellent flame resistance Excellent flexibility Medical grades
Polyurethane	90º - 105°C	High frequency interconnect	Excellent abrasion resistance Very good flexibility Can be coiled Halogen free
Polyester	90º - 125°C	High frequency interconnect Thin wall winding wire	Excellent abrasion resistance Can be coiled Excellent flex life characteristics Halogen free
TPE	90º - 125°C	High frequency interconnect	Highly flexible grades Medical grades Light weight grades Halogen free FR grades
Silicone	200°C	High frequency interconnect High voltage interconnect	Outstanding Flexibility Outstanding heat resistance Medical grades