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  • JLCFH
Material
  • Polyimide
  • Silicone
Dimensions
X
mm
Quantity

  • Polyimide Flexible Heaters

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    Ultra-thin & lightweight, precision‑etched circuits

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    Operating Temperature: -40°C to 260°C

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    Applications: Aerospace, medical devices, consumer electronics, and more.

  • Silicone Rubber Heaters

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    Rugged & durable, high power density

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    Operating Temperature: -40°C to 300°C

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    Applications: EV battery packs, pipeline heating, outdoor equipment, and more.

Customize Your Flexible Heater

  • Instant Online Quote

    Securely upload your design file to our online platform and get an instant quote that updates in real time as you select materials and specifications.

  • Free Circuit Design

    Just provide voltage, power/resistance, and size (L×W). JLCPCB Flexible Heater service offers free circuit design tailored to your requirements.

  • Delivery Straight to Your Door

    JLCPCB Flexible Heater serves customers worldwide. Your parts ship directly from our factory to your doorstep.

Flexible Heater Applications for Every Industry

Ideal for preheating and Insulation of EV Battery Packs, pipeline heating, heating of consumer electronic, and so on.

EV Battery Pack Heating

Hand Warmer Heating Module

3D Printer Heated Bed

Pipeline Heating & Insulation

Massage Device Heating

Outdoor Camera Heating & Defogging

Beauty Device Heating

Heating for Food Warmer Plates

Heated Insoles

The Flexible Heater Manufacturing Process

A look at the key steps in how your flexible heater is made.

1.Design File

Just provide voltage, power/resistance, and size (L×W). JLCPCB offers free circuit design tailored to your requirements.

2. Material Cutting

Based on the design file, the flexible heater substrate (e.g., brass, stainless steel, FeCrAl) is cut to the required size and shape using precision cutting equipment.

3. Dry Film Coating

A dry film, critical to final quality and performance, is coated onto the cut metal substrate in a cleanroom.

4. Exposure

In a dual-stage direct-imaging system, laser exposure hardens the circuit pattern areas, accurately transferring the pattern onto the dry film.

5. Development

The exposed substrate is developed in an intelligent system, where unexposed dry film dissolves to reveal the circuit pattern, while hardened areas remain to resist etching.

6. Etching and Stripping

After etching the developed substrate, the dry film covering on the circuit pattern is removed to expose the circuit traces.

7. Film Hole Punching

UV laser punching creates holes in the cover film for component connections and positioning in downstream processes.

8. Film and Substrate Alignment

The cover film is aligned and laminated to the etched substrate, with holes and pads matched precisely.

9. Shaping and Cutting

The flexible heater is die-cut into its final shape according to the end-product design.

10. 100% Resistance Testing

Manual resistance testing for each piece to ensure consistency within ±5% tolerance.

Flexible Heater FAQs & Resources

  • What is the difference between silicone heater and PI heater?

    Silicone is more durable, flexible, and suitable for outdoor or harsh environments. PI (polyimide) heaters use thin polyimide film and are ideal for compact applications that require lightweight and precise heating control.

    Silicone heaters generally offer higher mechanical strength, while PI heaters provide better thickness control and fast response.

  • Can I place an order without a design file?

    Yes. We offer free layout services. Simply select the shape, dimensions, hole/pad requirements, and pad orientation—we’ll handle the layout for you. No CAD experience is needed.

  • What is the resistance tolerance of JLC flexible heaters?

    Our flexible heaters have a resistance tolerance of approximately ±5%. The exact range may vary slightly depending on the film size and circuit design, but it always stays within tolerance limits, making it suitable for most constant temperature or on-off control applications.

  • What wires are commonly used for soldering on JLC flexible heaters?

    We commonly use silicone wires 3239 (black/red) or Teflon wires 1332 (black, red, blue, yellow). These wires offer excellent heat resistance, flexibility, and insulation properties, suitable for flexible heater soldering.

  • Do you support soldering of thermostats, NTCs, or custom terminals?

    JLC flexible heaters currently support soldering of NTCs, thermostats, and terminals. Customers need to clearly specify the model in the remark field or consult our customer service in advance. Selecting these additional components will incur extra charges.

  • Is there a recommended power density range? What if it's too high?

    The recommended power density depends on heat dissipation, operation time, and ambient conditions.

    We recommend calculating power density (W/cm²) based on the heating area and target temperature rise. We will soon launch an online calculator that automatically matches suitable materials and estimates maximum temperature based on your film size, voltage, resistance, or power input—helping you avoid underpowering or localized overheating.

    Excessive density may lead to:

    ● Adhesive failure, detachment, or yellowing

    ● PI film aging or deformation

    ● Localized overheating, which may cause burning, short-circuits, or fire hazards

Start Your Flexible Heater Project Today