LCF380 Two-Part Thermally Conductive Gel | 3.0 W/m·K Liquid Gap Filler

LCF380 is a two-part, dispensable thermal gap filler with a nominal thermal conductivity of 3.8 W/m·K. Designed for electronic thermal management, it fills gaps between heat-generating components and cooling structures to create a conformable thermal interface.

After the two components are mixed, the material begins curing and forms a soft, thermally conductive elastomer. It can cure at room temperature or undergo accelerated curing at elevated temperatures. Once cured, it provides a compliant interface similar to a thermal silicone pad while accommodating complex geometries and variations in gap thickness.

Before curing, LCF380 conforms to mating surfaces, helping increase the effective contact area and reduce thermal contact resistance. Its low-modulus cured structure helps limit assembly stress on sensitive electronic components.

Key Features and Benefits

Efficient Thermal Transfer

With a nominal thermal conductivity of 3.8 W/m·K, LCF380 supports heat transfer between electronic components and heat sinks, cold plates, or other cooling structures.

Conformable Gap Filling

The dispensable material fills uneven gaps and accommodates dimensional tolerances, making it suitable for assemblies with varying component heights or irregular contact surfaces.

Soft, Compliant Performance After Curing

LCF380 cures into a flexible elastomer that maintains conformable thermal contact and provides cushioning and support within the assembly.

Compatible with Automated Production

Two-component metering, mixing, and dispensing enable controlled material application. Dispensing volume and pattern can be adjusted to suit component layouts and production requirements.

Flexible Curing Options

Room-temperature curing offers process flexibility, while heat-accelerated curing can help shorten production cycles. The supplied processing guidance indicates a heating time of 10–60 minutes; the required curing conditions depend on temperature, material thickness, and the specified cure endpoint.

Electrical Insulation and Temperature Resistance

LCF380 combines thermal conductivity with electrical insulation properties and a specified operating temperature range of −40°C to +150°C.

Application Areas

LCF380 is intended for thermal interface applications requiring automated dispensing, variable-gap accommodation, and low mechanical stress. Potential applications include:

• Electric vehicle electronic assemblies

• Energy storage system electronics

• Power electronics and control modules

• Thermal modules with uneven mating surfaces or varying component heights
  
  

Suitability for a specific assembly should be established through application testing, including thermal performance, material compatibility, and reliability under the intended operating conditions.