Thermal Compounds
High-performance thermal paste in 2g, 4g, 10g and 30g, with applicator kits.
View rangePerformance. Precision. Legacy.
Stay cool.
We handle the heat.
Engineered to conduct. Premium thermal paste, pads, phase‑change material and putty for PC builders — independently tested, and built for the person who reads the datasheet before they buy.
Up to 22.5 W/mKSGS-testedRoHS + REACHNon-conductive options
Products
Thermal compounds, pads, phase change & putty.
A complete thermal line — every SKU spec’d for real cooling, not marketing numbers.
Thermal Pads
Soft silicone pads for GPU, VRAM and VRM in precise thicknesses.
View rangePhase Change
Phase-change material for CPU IHS, GPU die and console APUs.
View rangeThermal Putty
Reusable, non-conductive gap filler for VRAM, VRM, MOSFETs, PS5 and laptops.
View rangeNVMe & RAM Kits
Pre-cut thermal pad kits for M.2 2280 SSDs and server memory.
View rangeConformal Coating
Silicone PCB protection against moisture, dust and corrosion.
Notify meTechnology
The spec sheet does the persuading.
Every material is defined by a real technical data sheet and independent SGS testing. The figures printed on the box are the ones we design to — no inflated claims.
01
Rated by thermal conductivity
Published W/mK per SKU, straight from the material’s TDS.
02
Independently tested
SGS reports under Smicros LLC for RoHS, REACH and market compliance.
03
Conductive where it counts, safe where it matters
Non-conductive putty and pads for dense boards; high-performance compound for the die.
Thermal conductivity · W/mK
SHIELD PTM — Phase Change22.5
CRYO PRO X — Compound18.0
SHIELD — Thermal Pad16.8
SHIELD — Thermal Putty11.5 non-cond.
Operating range−60…210 °C
Built to standard
Built for the person who reads the datasheet before they buy.
We speak the language of engineers, builders and PC enthusiasts. Data leads the conversation — and every claim is documented.
RoHSREACHSGS TestedCA Prop 65GS1 / UPCMSDS & TDS
Flagship
SHIELD PTM — phase-change performance.
Our highest-conductivity material, engineered for the CPU IHS, GPU die and console APUs where every degree counts.
22.5W/mK · phase change
About
A thermal brand, run like an engineering shop.
Sun Microsystems is the PC thermal and accessories brand of Smicros LLC, based in Bay Harbor Islands, Florida. We source and specify each material directly, test it independently, and stand behind every number printed on the box.