1. Material & Structure
PI Film Heater:
Made of a thin plastic-like film (polyimide) with metal traces (e.g., copper) printed or etched on it.
Looks like a flexible circuit board (can be as thin as paper).
Silicone Rubber Heater:
Made of soft rubber with heating wires (e.g., nichrome) embedded inside.
Feels like a thick, bendy silicone mat.
2. Best Uses
Feature | PI Film Heater | Silicone Rubber Heater |
---|---|---|
Temperature | -269°C to +260°C (great for extreme heat) | -50°C to +230°C (good for moderate heat) |
Thickness | Ultra-thin (0.1–0.3 mm) | Thicker (1–6 mm) |
Flexibility | Can bend sharply, fold, or wrap tightly | Flexible but bulky; better for gentle curves |
Waterproof | Needs extra coating for water resistance | Naturally waterproof (good for wet areas) |
Weight | Very light (ideal for drones, phones) | Heavier (suits industrial machines) |
3. Pros
PI Film Heater
✅ Pros:
Super thin and lightweight.
Works in extreme cold/heat (e.g., space, car engines).
Easy to cut into custom shapes (like stickers).
Silicone Rubber Heater
✅ Pros:
Tough and water-resistant (great for outdoor use).
Handles vibrations and rough surfaces (e.g., factory equipment).
Cheaper for simple, large-area heating.
4. Example Applications
PI Film Heater:
Phone/drone cameras (anti-fog).
Battery warming in electric cars.
Satellite components.
Silicone Rubber Heater:
Food packaging machines.
Medical warming blankets.
Outdoor pipe freeze protection.
5. Cost & Lifespan
PI Film Heater:
Higher cost for small, complex designs.
Lasts 5–8 years with gentle use.
Silicone Rubber Heater:
Lower cost for large, simple heaters.
Lasts 3–5 years in harsh conditions.
6. Which Should You Choose?
Pick PI Film Heater if:
You need thin, lightweight heating (e.g., electronics).
Your device faces extreme temperatures or space constraints.
Pick Silicone Rubber Heater if:
You need affordable, rugged heating for wet or rough environments.
Your design has simple shapes and moderate heat needs.