PAC-240A is a high-performance, modified Type 1, Class 240 polyimide wire enamel. Applied in the form of polyamic acid solution, it is converted with heat to a continuous film with excellent resistance to radiation, chemicals and cryogenic temperatures. PAC-240A meets the requirements of NEMA MW 16 and is listed with Underwriters Laboratories.
Electrical properties
| Property | NEMA MW-1000 | ASTM D1696 | IEC 851 | JIS 3003 | |
|---|---|---|---|---|---|
| Dielectric strength at 25°C (77°F) | 3.8.1.1 | 69-75 | 13-4.2, 3, 4 | 11.1 | 10.2 kV |
| Dissipation factor at 220°C (428°F) - 1 kHz | 107-114 | 0.09 |
Mechanical properties
| Property | NEMA MW-1000 | ASTM D 1696 | IEC 851 | JIS C 3003 | |
|---|---|---|---|---|---|
| Adhesion and flexibility no snap 20% snap |
3.3.1.1 3.3.1.1 |
141-148 141-148 |
8-5.1.1 |
8.1 9.1 |
Pass 1d Pass 1d |
| Cut-through temperature | 3.50.1.1 | 61-68 | >500°C (932°F) | ||
| Heat shock 20% stretch - ½ h at 260°C (500°F) |
3.5.1.1 |
156-162 |
9-3.1 |
14.1 |
Pass 3d |
Physical properties
| Hours at temperature | 20000 | 10000 | 5000 | 1000 |
|---|---|---|---|---|
| Temperature °C (°F) | 242 (468) | 270 (518) | 280 (536) | 315 (599) |
Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Alleima materials.