Ultra Thin Flexible Heaters

In modern engineering, where every millimeter and gram counts, KLC Corporation provides MUTEX Ultra- Thin Flexible Heaters. With over 30 years of R&D expertise and IATF 16949 automotive-grade certification, we deliver high-reliability heating solutions that integrate seamlessly into complex assemblies.

What is an Ultra-Thin Flexible Heater?

An Ultra-Thin Flexible Heater is a polyimide-based (Kapton) thin film heater designed for precise, uniform heating in space-constrained applications. With thickness as low as 0.22 mm, it is widely used in automotives, EVs, medical devices, optics, semiconductor equipment, and battery systems.

At KLC, we provide custom Ultra-Thin Flexible Heater solutions with high power density, fast thermal response, and excellent temperature uniformity.

If you are looking for Ultra-thin Flexible Heaters for your application. Please contact us right now! info@ptc-heater.com.tw

Flexible Heater vs Silicone Heater

Compared to silicone rubber heaters, ultra thin flexible heaters offer:

• Much thinner profile (<0.22 mm)
• Faster thermal response
• Better integration in compact devices
• Higher design flexibility for complex geometries

Why Choose KLC’s MUTEX™ Ultra-Thin Flexible Heagter ?

• Minimal Profile: Standard thickness of 0.22mm (up to 0.3mm max), ideal for tight mechanical tolerances.
• Extreme Temperature Stability: Operates reliably from -250°C to +250°C (-418°F to +482°F).
• Rapid Thermal Response: Low thermal mass allows for nearly instantaneous heat-up and cool-down cycles.
• Chemical & Radiation Resistance: High dielectric strength and resistance to most solvents and oils.

Engineered for performance in extreme environments.

Unlike standard off-the-shelf heating pads, KLC flexible heaters are designed to meet rigorous industrial standards:

• Ultra-Thin & Lightweight: Only 0.22mm thick, weighing ~0.04 g/cm² for easy integration.
• Rapid, Uniform Heating: Ensures consistent performance across surfaces.
• Wide Operating Range: Functions from –250 °C to 250 °C, supporting 1.5~600V AC/DC.
• Flexible & Durable: KLC’s polyimide heaters have passed rigorous 20,000-hour tests encompassing both continuous heating and rapid on/off cycling. 
• EMF-Free & Cost-Effective: Safe and budget-friendly for all industries.
• Versatile Shapes: Available in all sizes, including shapes with holes for custom fit... (More)

Our ultra-thin flexible heaters support a wide range of use cases, including: 

• Camera Lens Heater: Optical & Camera Heating Solutions

• Electronics & Sensors: Moisture protection for electronics, PCB boards, and LCDs

• Automotive: Anti-fog and anti-ice solutions for EV ADAS, rear-view mirrors, battery systems

• Medical: Diagnostic device heating, incubator support, temperature stabilization

• Industrial & Aerospace: Battery pre-heating, sensor de-icing, snowmobile grips

• Computer equipments: IC chips/ PCB and… (More)                         

Selecting the right flexible heater depends on application requirements, power density, mounting conditions, and temperature control. Improper selection can lead to overheating, reduced lifespan, or system failure.

• Application: Define the heated object, material, and environment
• Size & shape: Heater should match the surface to avoid dry burning
• Electrical design: Voltage (1.5–600V) and power follow Ohm’s Law (P = V² / R)
• Power density: ≤0.8 W/cm² for adhesive mounting (PSA)
• Temperature: –250°C to 250°C depending on design
• Control: External temperature controller required

Read the full Flexible Heater Selection Guide →

 
These technical FAQs help engineers design and select the right flexible heater for their application.

What is power density in a flexible heater?

Power density (W/cm²) is the heat output per unit area. For polyimide (Kapton) flexible heaters with adhesive mounting (PSA), it is typically limited to ≤0.8 W/cm². Higher values require mechanical clamping or improved heat dissipation. Clamping with a pressure plate is mandatory for power densities over 0.8 W/cm2 or operating temperatures above 110°C. This prevents the adhesive from softening and causing bubbles due to thermal expansion

How do I select voltage and resistance?

Flexible heater output follows Ohm’s Law (P = V² / R). KLC suggest selecting specifications based on “Temperature Rise Reference” and the resistance limits of the specific heater series. 

Can flexible heaters operate in open air?

No. Flexible heaters require direct contact with a surface. Flexible heaters are designed for direct thermal conduction and function most efficiently when tightly adhered to an object, as air has very low thermal conductivity

What affects heater performance?

Performance depends on thermal conductivity, mounting contact, airflow, insulation, and power density.

Is a temperature controller required?

Yes. Flexible heaters are not self-regulating. A temperature controller (e.g., PID) and over-temperature protection are recommended.

Need more technical details?

For in-depth information regarding installation SOPs, thermal resistance data, and advanced control configurations, please visit our  Complete Technical Q&A Page.

Get Custom Flexible Heater Support

Custom Flexible Heater Solutions

KLC specializes in custom flexible heater design and manufacturing. Custom specifications can be designed according to customer’s requirements. 

 We support engineers from concept to production, offering:

• Voltage, Wattage and temperature
• Custom shapes and sizes
• Optimized heating patterns
• Integrated sensors (NTC / RTD)
• Adhesive backing options
• Full engineering support

Contact us : info@ptc-heater.com.tw now!