2.0 W/mK High Density Thermal Grease Paste 300 Penetration Thermal Conductive Grease for Solar Inverter Cooling

HN200 is a single-component, non-curing, high thermal conductive silicone grease with conductivity above 2.0 W/mK, engineered for heat generating elements in ambient and heating environments from -50 C to +200 C. It combines excellent temperature resistance, oil separation resistance and easy application with high filler loading (specific gravity 3.04 g/cm3), delivering a low thermal resistance of 0.82 C cm2/W at 25 PSI. The compound is electrically insulating at 2450 V/mm, near-zero ionisation, resistant to high and low temperature, water, ozone and weathering, and is safe, non-toxic, odourless, non-corrosive and RoHS 2.0 compliant.

• 2.0 +/- 0.1 W/mK thermal conductivity with 0.82 C cm2/W thermal resistance at 25 PSI (ASTM D5470) - high filler loading for thin, low resistance interfaces.
• Specific gravity 3.04 +/- 0.08 g/cm3: dense, high filled formulation that resists pump-out under thermal cycling and keeps contact pressure stable.
• 300 +/- 20 penetration (1/10 mm): firmer consistency that stays in place on vertical and overhead interfaces while remaining dispenser friendly.
• 2450 V/mm dielectric strength (IEC 60243, 0.20 mm) for electrical isolation on live power stages.
• Wide service range -50 C to +200 C, non-curing: no hardening, no powdering after 8 days at 200 C, no drying after 3 h at 280 C.
• Oil separation max 0.5% and volatile matter max 0.8% at 200 C / 24 h to limit oil bleed and fogging in sealed power enclosures.

All values are measured under standard conditions and are for reference only. Actual thermal performance varies with application conditions, bond line thickness and contact pressure.

HN200 is applied as the thermal interface between heat generating elements (power transistors, thyristors, heating elements) and heat dissipation parts (heat sinks, heat exchange strips, housings) in electronic and electrical equipment, covering:

• New energy power conversion: solar inverter power stages, PV string and micro inverter modules, energy storage PCS cabinets, EV charging pile power modules, on-board charger and DC-DC modules, battery pack and BMS thermal interfaces.
• Industrial drives and power supplies: variable frequency drives, servo drives, motor controllers, welding machines, UPS units, switching power supplies, regulated power supplies, power supply modules, rectifier and solid state relay assemblies.
• Power semiconductors: power transistors, thyristors, IGBT and MOSFET modules, diode and bridge assemblies, high power resistor and heating element interfaces.
• Computing and lighting: CPU assemblies and GPU heat sinks, server and telecom power shelves, LED lighting fixtures, LED driver boards and lamp housings.
• Appliance and instrumentation: appliance control boards, induction heating modules, instrument housings, sensor and controller assemblies, thermistors and temperature sensors.
• Automotive and RF: automotive electronics, car refrigerators, plus surface coating or overall potting of microwave devices, microwave communication systems, microwave transmission equipment and microwave power supplies.

• Line-ready packaging: 1 kg and 5 kg plastic drums as standard; custom drum sizes and private label filling available on request.
• Customisation: conductivity grade, grey tone, penetration and viscosity, filling weight and label printing can be tailored for OEM and ODM programmes.
• Documentation: TDS HANAST-TDS-019 Rev.1 and RoHS 2.0 statement supplied with every shipment; additional test reports on request.
• Capacity and lead time: 6000 kg monthly capacity, 3-5 working days for stock drums, 12-18 days for bulk production.
• Shelf life: 12 months from manufacture date in unopened original packaging stored below 27 C; stir thoroughly if minor oil separation occurs.

1. Clean contact surfaces with a solvent to remove grease, dust and oxidation, then dry completely.
2. Apply by brush, roller, automatic dispenser or screen printing and spread evenly to the required thickness.
3. Keep the layer as thin as possible - excess grease lowers heat transfer efficiency; wipe edges with a lint-free cloth.
4. Assemble the heat sink or heat source immediately and torque fasteners to specification to control bond line thickness.
5. Industrial use only: wear nitrile gloves and safety goggles, ensure ventilation, keep containers sealed and store away from food and children.

Request a sample, batch TDS or OEM quotation for HN200 high density thermal conductive grease - our technical team will confirm grade, packaging and delivery schedule for your programme.