DOWSIL™ 340 Heat Sink Compound is a one-part, non-curing, thermally conductive silicone compound designed to enhance heat transfer between electronic components and heat sinks. Its stable performance across a wide temperature range and low bleed characteristics make it suitable for various thermal management applications.
Product Overview
DOWSIL™ 340 is a white, grease-like silicone compound heavily filled with heat-conductive metal oxides. It remains non-flowing and stable over time, ensuring consistent thermal performance. The compound is primarily used to improve the thermal coupling between electronic devices and heat sinks, thereby enhancing device reliability and longevity.
Key Features
High Thermal Conductivity : Approximately 0.67 W/m=K, facilitating efficient heat transfer.
Low Bleed and Evaporation : Bleed at 0.23% and evaporation at 0.38%, ensuring minimal material degradation over time.
Wide Operating Temperature Range : Stable performance from -40°C to +199°C (-40°F to +390°F).
Non-Curing and Non-Flowing : Maintains its consistency without hardening, allowing for easy rework and maintenance.
Dielectric Strength : 210 V/mil, providing electrical insulation properties.
Applications
DOWSIL™ 340 is suitable for:
Thermal Coupling : Between electronic components (e.g., transistors, diodes, SCRs) and heat sinks.
High-Voltage Corona Suppression : In applications like flyback transformers in TV sets.
Aerospace and Automotive : Thermal management in engines and electronic systems.
Its non-flowing nature makes it ideal for applications where vertical or angled orientations are involved.
Safety and Handling
Handling Precautions:
* Apply in well-ventilated areas to minimize inhalation of vapors.
* Avoid contact with skin and eyes; use appropriate personal protective equipment.
* Ensure surfaces are clean and dry before application for optimal adhesion.
Storage Recommendations:
* Store in a cool, dry place away from direct sunlight.
* Keep containers tightly closed when not in use.
* Shelf life is up to 60 months when stored at 38°C in unopened containers.
First Aid Measures:
* Skin Contact: Wash thoroughly with soap and water.
* Eye Contact: Rinse immediately with plenty of water and seek medical attention.
* Inhalation: Move to fresh air; seek medical attention if symptoms persist.
* Ingestion: Do not induce vomiting; seek immediate medical attention.
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