Loctite 383 Thermally Conductive Acrylic Adhesive Grey 25ml

Loctite 383 Thermally Conductive Acrylic Adhesive Grey 25ml is a high-strength, high-viscosity grey modified acrylic adhesive engineered for maximum efficacy in heat dissipation. This industrial-grade adhesive permanently bonds heat-generating components to heat sinks, preventing costly thermal damage or structural failure caused by excessive heat buildup in sensitive circuitry. Whether you are securing transformers or transistors, this premium modified acrylic adhesive provides a robust, thermally conductive bond on all electronic assemblies—including printed circuit board assemblies and metallic heat sinks.

Why Choose Loctite 383 Heat Dissipation?

• Excellent Heat Dissipation: Features high thermal conductivity to deliver superb thermal management and cooling for temperature-sensitive components.
• Controlled Repairable Strength: Combines structural integrity for assemblies with a controlled-strength profile that safely permits future field and service repairs.
• No-Mix Paste Convenience: Formulated as a single-component high-viscosity paste, eliminating the hassle, waste, and error risks associated with mixing multi-part epoxy systems.
• Outstanding Thermal Cycle Resistance: Suffers absolutely no loss in structural bond strength even after 1,000 hours of continuous thermal cycling between 15°C and 100°C.
• Reliable Industrial Storage: Maintains optimal performance and properties when stored in its unopened original container between 8°C and 21°C.

Technical Specifications

• Product Type: Modified Acrylic Adhesive
• Strength: High
• Color: Grey
• Container Size: 25ml
• Certifications: Formulated to Henkel Material Specifications (LMS); tested for thermal cycle resistance and high-pot electrical safety limits.

Simple Application Instructions

1. Clean: For optimal results, ensure all mating bond surfaces are completely clean and entirely free from grease or contaminants.
2. Apply Activator: Use an applicator to apply the recommended Loctite activator to the surface. Once the solvent evaporates, the active ingredients will remain active for up to 2 hours.
3. Apply Adhesive: Apply the high-viscosity Loctite 383 adhesive paste to the unactivated mating surface. Limit the amount to just enough to fill the bondline and yield a small fillet.
4. Assemble: Assemble the components immediately to minimize air entrapment within the bondline. Secure the assembly and wait approximately 5 minutes for the adhesive to fixture; full cure completes within 4 to 24 hours.

Frequently Asked Questions (FAQ)

What is Loctite 383 used for?

Loctite 383 is a high-strength modified acrylic adhesive designed for thermal management in electronics. It is specifically formulated to prevent sensitive electronic components from overheating and failing due to thermal stress and inadequate heat sink dissipation.

Can Loctite 383 be disassembled?

Yes. Although it provides high structural strength to protect electronic assemblies, it features a controlled strength profile explicitly engineered to permit field and service repairs when components need replacement.

Does Loctite 383 work on electronic substrates?

Yes. Loctite 383 offers robust performance across common electronics industry materials. It is highly effective on metallic surfaces (such as aluminum heat sinks) as well as epoxyglass printed circuit board assemblies.

Is Loctite 383 safe for high-voltage environments?

Loctite 383 possesses dependable dielectric insulation properties for electronic components. However, in high-pot configurations, its safe electrical load exposure should be strictly limited to a maximum of 500 volts.