APTIV™ XPI A105
APTIV™ XPI A105 is an unfilled, semi-crystalline film manufactured from VICTREX™ PEEK polymer, available at 100 µm with a density of 1.30 g/cm³, and is designed for high-voltage e-motor stator slot liner applications operating at 800 V and above. It delivers a breakdown voltage of 16.2 kV at 23°C, a partial discharge inception voltage of 1199 V at 23°C, and a Relative Thermal Index (Electrical) of 240°C per UL 746B. The film provides outstanding chemical and hydrolysis resistance to water, ATF, oils, and cooling fluids, supporting all cooling concepts from water-based systems to direct oil immersion.
Key Properties
- Tensile Stress, MD: 23°C, 100 µm: 120 MPa (ISO 527)
- Tensile Elongation, MD: 23°C, 100 µm: >150 % (ISO 527)
- Breakdown Voltage 1 kV/s (23°C): 16.2 kV (ASTM D149)
- Dielectric Constant (23°C) 1 kHz: 3.20 (IEC 60250)
- Film Thickness — Recommended/Available: 100 µm
- Density Crystalline (23°C): 1.30 g/cm³ (ISO 1183)
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- Specifications
- Applications
- General Info
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Physical Properties
| Property | Value | Test Method |
| Density Crystalline (23°C) | 1.30 g/cm³ | ISO 1183 |
| Water Absorption, Equilibrium, 23°C, 0.0500 mm, 50% RH | 0.040 % | ISO 62 |
| Shrinkage MD TM-VX-84 (200°C, 50.0 µm) | <0.50 % | — |
| Shrinkage TD TM-VX-84 (200°C, 50.0 µm) | <0.50 % | — |
Mechanical Properties
| Property | Value | Test Method |
| Film Thickness — Recommended/Available | 100 µm | — |
| Tensile Modulus, MD: 23°C, 100 µm | 2400 MPa | ISO 527 |
| Tensile Modulus, TD: 23°C, 100 µm | 2300 MPa | ISO 527 |
| Tensile Stress, MD: 23°C, 100 µm | 120 MPa | ISO 527 |
| Tensile Stress, TD: 23°C, 100 µm | 120 MPa | ISO 527 |
| Tensile Elongation, MD: 23°C, 100 µm | >150 % | ISO 527 |
| Tensile Elongation, TD: 23°C, 100 µm | >150 % | ISO 527 |
Thermal Properties
| Property | Value | Test Method |
| Glass Transition Temperature (Onset) | 143 °C | ISO 11357 |
| Melting Temperature | 343 °C | ISO 11357 |
| CLTE — Flow below Tg (0.0500mm) | 3.5E-5 cm/cm/°C | ASTM D696 |
| Thermal Conductivity Through Plane | 0.25 W/m/K | ASTM E1461 |
| RTI Elec | 240 °C | UL 746B |
Electrical Properties
| Property | Value | Test Method |
| Volume Resistivity @ 100 V (23°C, 50.0 µm) | 1.0E+16 ohms•cm | IEC 60093 |
| Comparative Tracking Index (CTI) 23°C | PLC 4 | IEC 60112 |
| Breakdown Voltage 1 kV/s (23°C) | 16.2 kV | ASTM D149 |
| Breakdown Voltage Retention (180°C, 500 V/s) | >95.0 % | IEC 60243 |
| Dielectric Constant (23°C) 1 kHz | 3.20 | IEC 60250 |
| Dissipation Factor 1MHz | 3.0E-3 | IEC 60250 |
| Partial Discharge Inception Voltage, 23°C | 1199 V | IEC 60270 |
| Partial Discharge Inception Voltage, 180°C | 890 V | IEC 60270 |
- High-voltage slot liner insulation in 800 V and above e-motor stator windings
- Primary and secondary electrical insulation in traction motors for electric vehicles
- Stator insulation in direct oil-immersion cooled electric machines
- Phase insulation films in automated stator winding assembly processes
- Resin-free electric machine insulation requiring wear resistance and chemical compatibility
Common industries: Electric vehicle (EV) powertrain, e-motor manufacturing, automotive, industrial drives, aerospace electrification.
APTIV™ XPI A105 belongs to the APTIV™ XPI series — a family of PEEK films specifically engineered for high-voltage electric motor stator insulation. At 100 µm, it is the thinnest gauge in the XPI A-series and is designed to maximize copper fill factor while meeting the dielectric demands of 800 V and higher electric machines.
The film provides long-term thermal stability in rotating machines operating under high electric field strengths, with a Relative Thermal Index (Electrical) of 240°C per UL 746B and a glass transition temperature onset of 143°C and melting temperature of 343°C per ISO 11357.
Mechanical properties are engineered for compatibility with automated assembly lines, achieving tensile stress of 120 MPa in both MD and TD at 100 µm and elongation exceeding 150% in both directions. The film demonstrates outstanding chemical and hydrolysis resistance to water, ATF, oils, and cooling fluids, is compatible with a wide range of impregnation resins, and provides optimized wear resistance for resin-free electric machine concepts.
CLTE below Tg is 3.5E-5 cm/cm/°C (ASTM D696) and through-plane thermal conductivity is 0.25 W/m·K (ASTM E1461). Breakdown voltage retention at 180°C is >95.0% per IEC 60243. The standard supply format is a 650 mm wide roll, 1300 m length, on a 152 mm (6″) core, with a standard roll outer diameter of 450 mm.
No compliance standards are specified on the manufacturer’s TDS for this material. The TDS references UL 746B for the RTI Elec value and IEC/ASTM test methods for property characterization.
What differentiates APTIV™ XPI A105 from A106, A107, and A108?
APTIV™ XPI A105 is the thinnest gauge in the XPI A-series at 100 µm, providing the highest copper fill factor of the group. The A106 (125 µm), A107 (150 µm), and A108 (200 µm) grades offer progressively higher breakdown voltages — 18.9 kV, 21.6 kV, and 25.9 kV respectively — and higher partial discharge inception voltages as gauge increases. A105 is selected where slot volume is most constrained and the 16.2 kV breakdown voltage meets the application requirement.
Why does tensile strength matter when selecting an e-motor insulation film?
In stator slot liner applications, the film must withstand the mechanical forces of automated insertion equipment, winding tension, and long-term vibration in service without tearing or cracking. APTIV™ XPI A105 achieves 120 MPa tensile stress in both MD and TD at 100 µm, combined with >150% elongation, ensuring reliable processing on automated assembly lines and mechanical durability throughout the motor's service life.
What is the operating temperature range for APTIV™ XPI A105?
The TDS reports a glass transition temperature onset of 143°C and a melting temperature of 343°C per ISO 11357. The Relative Thermal Index (Electrical) is rated at 240°C per UL 746B, indicating long-term electrical performance at this temperature.
Is APTIV™ XPI A105 suitable for regulated environments?
The TDS reports an RTI Elec of 240°C per UL 746B. No additional compliance certifications are listed on the manufacturer's TDS for this material.
How should APTIV™ XPI A105 be specified?
Specify grade (APTIV™ XPI A105), thickness (100 µm), compliance requirements, dimensional tolerances, and finished format.
