Thermal Adhesive Tapes
Thermal adhesive tape combines heat transfer with double-sided adhesion. It secures heat sinks directly to heat-generating components, reducing the need for screws, clips and additional bonding steps. Select the right tape for slim electronic devices based on contact surfaces, gaps, thermal performance, adhesion, material structure and electrical safety.
Thermal Adhesive Tape Selection Guide
Select thermal adhesive tape according to the contact surfaces, cooling requirements, mounting strength, material structure, electrical safety and operating environment. The right product should provide low interface thermal resistance and stable long-term adhesion to prevent the heat sink from shifting, lifting or detaching.
Check Surfaces and Gaps
Thermal adhesive tape suits cooling structures with flat surfaces, small gaps and direct bonding requirements. Thin products shorten the heat-transfer path, while thicker non-reinforced products can accommodate small surface variations.
- Contact-surface flatness
- Gap between component and heat sink
- Tape thickness
- Bonding-surface material
- Need to accommodate small surface variations
Thermal adhesive tape cannot replace a thick thermal pad. Use a thermal pad or liquid gap filler when component height differences, mechanical tolerances or gaps are large.
Compare Thermal Performance
Thermal conductivity represents the material’s ability to transfer heat. Actual cooling performance also depends on tape thickness, contact area, bonding quality and interface thermal resistance.
- Thermal conductivity
- Tape thickness
- Material thermal resistance
- Contact area
- Allowable component temperature rise
Do not compare thermal conductivity alone. A thinner, fully bonded tape may have lower actual thermal resistance than a thicker product with higher thermal conductivity.
Assess Adhesion and Load
Thermal adhesive tape transfers heat and secures the heat sink. Selection must account for heat-sink weight, mounting orientation, bonding area and the vibration or shock the equipment may experience.
- Heat-sink size and weight
- Mounting orientation
- Peel and shear strength
- Bonding area
- Vibration and shock conditions
- Long-term adhesion retention
Do not rely on tape alone for large or heavy heat sinks, vertical installations or high-vibration environments. Consider adding screws, clips or another mechanical mounting structure.
Choose Material and Reinforcement
Silicone-based tapes are generally better suited to high-temperature environments. Non-silicone tapes help reduce the risk of siloxane contamination on contacts, lenses and precision components. Fiberglass reinforcement improves processing and placement stability, while non-reinforced structures are more conformable.
- Silicone or non-silicone
- Fiberglass-reinforced or non-reinforced
- Operating temperature
- Die-cutting and placement requirements
- Surface-conformability requirements
Fiberglass-reinforced tape is easier to die-cut, handle and position. Non-reinforced tape conforms better to small surface variations but is more likely to stretch or deform during processing, liner removal or placement.
Check Insulation and Safety
When tape is placed between a live component and a metal heat sink, verify its electrical insulation in addition to its heat-transfer and adhesion performance. Also confirm the flammability and environmental requirements of the end equipment.
- Equipment operating voltage
- Dielectric breakdown voltage
- Tape thickness
- Dielectric breakdown voltage
- RoHS/REACH requirements
- Risk from metal burrs and sharp edges
Not all thermal adhesive tapes can serve as electrical insulators. Insulation and UL ratings must correspond to the actual product model, thickness and certification conditions.
Assess Environment and Reliability
Thermal adhesive tape must maintain its heat-transfer and adhesion performance under the equipment’s actual operating temperature, heat and humidity, thermal cycling and vibration conditions.
- Long-term operating temperature
- Short-term process temperature
- High-temperature, high-humidity conditions
- Thermal cycling
- Vibration and shock
- Adhesion retention after aging
A short-term peak temperature must not be treated as the long-term operating temperature. Base selection on the actual continuous operating conditions and adhesion performance after aging.
Find the Right Thermal adhesive tape
Thermal adhesive tape combines heat transfer with double-sided adhesion. It secures heat sinks directly to heat-generating components, reducing the need for screws, clips and additional bonding steps. Silicone, non-silicone, fiberglass-reinforced and multiple thickness options are available for slim electronic devices with flat surfaces and small gaps.
Double-Sided Adhesion
Secures the heat sink while transferring heat.
Thin and Low Resistance
Shortens the heat-transfer path to the heat sink.
Material Options
Available in silicone and non-silicone formulations.
Structural Options
Choose reinforcement according to conformability and processing needs.
electrical insulation
Isolates live components from metal cooling structures.
Power supplies
Power semiconductors
Motor controllers
5G base stations
automotive electronics
EV control modules
Thermal Adhesive Tape Installation
Clean the surfaces
Remove oil and dust, and keep the surface dry.
Remove the Liner
Peel slowly from the edge without touching the adhesive.
Align and Apply
Position the tape and apply it gradually from one side.
Remove the Second Liner
Confirm adhesion, then slowly peel off the second liner.
Press and Inspect
Align the component and apply even pressure for full contact.
Note:Do not press only one area or corner. Insufficient pressure may leave air bubbles, while uneven pressure can cause lifted edges, incomplete bonding or a tilted heat sink.
Feature Overview
Non-Silicone
Reduce Siloxane Outgassing and Contact Contamination
Evaluate material outgassing, condensable substances and water-vapor regain to reduce the risk of contaminating lenses, sensors and precision components in vacuum or sealed environments.
High Adhesion
Secure Heat Sinks and Components
The double-sided adhesive structure secures the heat sink directly to the heat-generating component. It reduces screws, clips and additional bonding steps while improving assembly efficiency and space utilization in slim devices.
Reliability
Stable Under Heat and Thermal Cycling
Suited to prolonged high-temperature operation and thermal cycling. It helps reduce material softening, degradation, displacement and increases in thermal resistance, maintaining contact and heat-transfer reliability.
Electrical Insulation
Heat Transfer with Electrical Isolation
High volume resistivity and dielectric breakdown voltage provide electrical isolation between components and metal heat sinks, suiting power devices and high-voltage electronic modules.
UL Certification
For Equipment with Flammability Requirements
Products with UL flammability properties are available for applications such as power supplies, communications equipment and automotive electronics that require material safety compliance and production certification.
Fiberglass reinforcement
Improve Die-Cutting and Placement Stability
Sheet-form material combines heat conduction with electromagnetic-wave absorption to help reduce signal interference across frequency bands and address hotspots. It suits millimeter-wave, terahertz, radar and communications equipment.
Thermal Adhesive Tape Selection FAQs
What is the difference between thermal adhesive tape and a thermal pad?
Thermal adhesive tape provides double-sided adhesion and mounting for cooling structures with small gaps and flat surfaces. Thermal pads are thicker and compressible, making them better suited to component height differences and mechanical tolerances.
Can thermal adhesive tape replace screws or clips?
Tape may be used directly for small, lightweight heat sinks. Large or heavy heat sinks, vertical installations and high-vibration structures still require mechanical mounting and reliability validation.
What is the difference between reinforced and non-reinforced tape?
Fiberglass-reinforced tape offers better dimensional stability and is easier to die-cut, handle and position. Non-reinforced tape is more conformable and can accommodate small surface variations, but must be protected from stretching and deformation during processing and placement.
Can thermal adhesive tape fill large gaps?
Standard thin thermal adhesive tape is suitable only for flat surfaces and small variations. Use a thermal pad or liquid gap filler when the gap or component height difference is significant.
Are all thermal adhesive tapes electrically insulating?
Not necessarily. Verify the dielectric breakdown voltage, resistivity and material thickness of each product against the equipment’s actual operating voltage and safety requirements.