3M™ Thermally Conductive Acrylic Interface Pad 5571
Cut Size 50mm × 20mm | Thermal Interface Pad
3M™ Thermally Conductive Acrylic Interface Pad 5571 is a conformable thermal interface material designed to provide a preferential heat transfer path from heat-generating components to cooling devices such as aluminum plates and heat sinks. The material consists of a slightly tacky acrylic elastomer with a thermally conductive ceramic filler. Its soft and conformable construction allows it to fill surface irregularities and air gaps for improved thermal contact.
Key Features
- Thermal conductivity of 2.1 W/m-K for efficient heat transfer from electronic components to cooling structures.
- UL94 V-0 listed for demanding electronic and industrial applications.
- Good electrical insulation properties provide electrical separation while maintaining thermal transfer.
- Conformable construction helps fill gaps between uneven mating surfaces.
- Soft, compliant material allows pressure relaxation and helps reduce high-pressure zones on components.
- Slightly tacky acrylic elastomer supports good wetting and thermal contact.
- Does not contain intentionally added silicone, helping avoid siloxane VOC and oil bleeding associated with silicone-based products.
- 50mm × 20mm pre-cut format is convenient for compact electronic assemblies and targeted thermal management applications.
Product Highlights
2.1 W/m-K Thermal Conductivity
Provides an efficient thermal path for transferring heat from heat-generating components to heat sinks and cooling plates.
UL94 V-0 Performance
UL94 V-0 performance supports use in electronic, automotive and industrial thermal management applications.
Gap Filling Capability
The conformable acrylic elastomer helps fill air gaps and surface irregularities between mating surfaces.
Soft & Conformable
Soft, compliant construction conforms to non-flat surfaces and supports consistent thermal contact.
Electrical Insulation
Provides good electrical insulation while maintaining a preferential thermal transfer path between components and cooling devices.
50mm × 20mm Cut Size
Compact pre-cut dimensions make the material convenient for targeted thermal interface applications and smaller assemblies.
Specifications
| Product Name | 3M™ Thermally Conductive Acrylic Interface Pad 5571 |
|---|---|
| Product Model | 5571 |
| Product Series | 3M™ Thermally Conductive Acrylic Interface Pad 5571 Series |
| Manufacturer | 3M |
| Product Type | Thermally Conductive Acrylic Interface Pad |
| Material | Thermally Conductive Acrylic Elastomer |
| Filler | Conductive Ceramic Filler |
| Product Size | 50 mm × 20 mm |
| Available Thickness | 1.0 ± 0.05 mm / 1.5 ± 0.10 mm / 2.0 ± 0.10 mm |
| Thermal Conductivity | 2.1 W/m-K |
| Color | Yellowish White Core |
| Liner | Transparent Film Liner |
| Electrical Insulation | Good Electrical Insulation Properties |
| Dielectric Strength | 17 kV/mm |
| Volume Resistivity | 2.5 × 1014 Ω-cm |
| Hardness | 78 Shore 00 |
| Density | 1.9 g/cm³ @ 25°C |
| Flammability | UL94 V-0 |
| Surface | Slightly Tacky Acrylic Elastomer |
| Conformability | Good Conformability to Uneven Surfaces |
| Silicone | No Intentionally Added Silicone |
| Application | Thermal Management and Heat Dissipation |
| Typical Applications | Battery Cooling, Power Electronics and HMI Displays |
Technical values are typical/representative and should not be used as specification limits. Product performance may vary depending on application, substrate, compression, processing conditions and environmental factors. Always refer to the latest 3M technical documentation for application-specific requirements.
Applications
Battery Cooling
Suitable for thermal interface applications in battery cooling systems where heat must be transferred from battery components to cooling structures.
Power Electronics
Suitable for power electronics assemblies requiring efficient heat transfer and electrical insulation between components and cooling devices.
HMI Displays
Suitable for HMI display assemblies where electronic components require a conformable thermal interface for heat dissipation.
Automotive Electronics
Suitable for automotive electronic systems requiring thermal management and electrical insulation between heat-generating components and cooling structures.
LED Lighting Systems
Suitable for LED assemblies where heat generated by electronic components must be transferred to cooling structures.
Electronic Components
Suitable for compact electronic assemblies requiring a targeted thermal interface between components and heat sinks.
Product Uses
3M™ Thermally Conductive Acrylic Interface Pad 5571 is designed to provide a preferential heat transfer path from heat-generating electronic components to cooling devices such as aluminum plates and heat sinks.
The soft, conformable acrylic elastomer construction helps fill surface irregularities and air gaps between mating surfaces. The thermally conductive ceramic filler provides a thermal conductivity of 2.1 W/m-K, supporting efficient heat transfer through the interface.
The material also provides good electrical insulation, making it suitable for applications where thermal transfer and electrical separation are required at the same time.
Typical applications include battery cooling, power electronics and HMI displays. The material can also be used in automotive electronics, LED lighting systems, inverters, electronic control units and other thermal management applications.
The 50 mm × 20 mm cut format is particularly convenient for compact electronic assemblies, prototypes, maintenance applications and targeted thermal interface installations where a small pre-cut piece is required.
For optimal thermal performance, the mating surfaces should be clean and dry. 3M recommends sufficient compression to achieve good wet-out of the interface; the required gap should allow approximately 10–20% compression for optimal wetting.
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