0.025mm Polyimide Film Manufacturer | Class H Insulation & Radiation Resistance
STK's 0.025mm Polyimide Film (PI Film) is an advanced dielectric material engineered for extreme environments. Known for its amber color and exceptional thermal stability, this film maintains its physical, chemical, and electrical properties across a wide temperature range, from -269℃up to +260^℃.
This 1\mil film is a "solution-ready" substrate. It is highly sought after for Class H (℃) insulation systems, high-end motor windings, and lithium-ion battery protection. Its superior mechanical strength and radiation resistance make it the premier choice for aerospace, vacuum technology, and high-frequency electronic applications.
Technical Specifications
| Product Name | Polyimide Film |
| Thickness(mm) | 0.05 |
| Adhesive | No |
| Backing | Polyimide film |
Color |
Amber/Black |
| Release Liner | No |
| Elongation at break (%) | 25%-55% |
| Insulation strength(MV/m) | 180 |
| Surface resistivity (Ω/inch²) | 10^13-15 |
Short-term temperature (℃) |
350 |
Long-term temperature (℃) |
300 |
Key Features
Ultra-Thin Precision Material (0.025mm)
Ideal for high-precision electronic applications where minimal thickness is required without affecting assembly.
01
Extreme High Temperature Resistance (Up to 260°C+)
Maintains dimensional stability in wave soldering, SMT, and high-temperature processing.
02
Excellent Electrical Insulation
High dielectric strength ensures reliable insulation in motors, transformers, and battery systems.
03
Outstanding Chemical & Radiation Resistance
Resistant to solvents, acids, radiation, and harsh environments, suitable for advanced industries.
04
Easy Die-Cutting & Processing
Flexible film structure enables precise die-cutting and forming for automated production.
05
High-Tech Application Fields
Power Electronics
Primary insulation for Transformers, Capacitors, and Motors. Ideal for coil wrapping and slot liners in Class H insulation systems.
01
EV Battery Systems
Used for cell insulation and tab protection (positive/negative ears) in high-energy-density lithium batteries.
02
Aerospace & Defense
Essential for wire and cable wrapping in satellites, rockets, and missiles due to its low outgassing and radiation resistance.
03
Flexible Circuits (FPC)
Serves as a base substrate for flexible copper-clad laminates (FCCL) and coverlay films.
04
Why Source Polyimide Film from STK?
Manufacturer-Direct Supply
As a primary producer with 4 manufacturing bases, we offer the stability and scale required for high-volume industrial projects.
Custom Conversion Services
While we provide standard rolls, we also specialize in:
Precision Slitting: Widths as narrow as 3mm for automated coil wrapping machines.
Die-Cutting: Custom-shaped insulators for motor slots and electronic housings.
Global Compliance
Fully compliant with RoHS, REACH, and UL 510 standards.
Wholesale Tiered Pricing
Save 30 % - 60% on material costs by sourcing directly from the factory.
Equipment
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