⚡ Keep your tech chill and running smooth — the secret sauce for pro-grade thermal control!
Dow Corning 340 Silicone Heat Sink Compound is a 5oz white, grease-like thermal coupling paste engineered for electrical devices and PCB assemblies. Featuring 0.67 W/mK thermal conductivity, non-flowing and non-curing stability, and a dielectric strength of 210 V/mil, it ensures efficient heat transfer and electrical insulation. Ideal for high-temperature environments up to 177°C, this compound enhances device reliability by preventing overheating without the need for curing ovens.
| ASIN | B0DFWHK2GL |
| Best Sellers Rank | #120,376 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #592 in Industrial Lubricants |
| Brand | SANYI |
| Brand Name | SANYI |
| Container Type | Tube |
| Customer Reviews | 4.7 out of 5 stars 18 Reviews |
| Flash Point | 101 Degrees Celsius |
| Included Components | Paste, Paste Tube 5oz, Outer Box |
| Item Form | Paste |
| Item Weight | 142 Grams |
| Liquid Volume | 5 Fluid Ounces |
| Manufacturer | Molykote |
| Material | Silicone |
| Package Information | Tube |
| Recommended Uses For Product | Electrical |
| Specific Uses For Product | Prevent Corrosion |
| Unit Count | 5.0 Ounce |
S**T
Good stuff
Works great.
W**S
Easy to apply
Easy to use and spread over desired electronics.
J**F
Great product!
Works as advertised.
R**R
Dowsil 340 Heat Sink Compound - Reliable, But Not for High-Performance CPUs
This thermal compound is not ideal for computer CPUs—its thermal conductivity is barely above water at 0.67 W/mK, while even budget CPU pastes range from 1-2 W/mK. However, where it shines is stability. It won’t dry out like other compounds, making it a solid choice for voltage regulators, power transistors, and similar applications where reliability matters more than peak performance. Recommended with that caveat.
L**E
Satisfied customer
Satisfied customer
T**0
Works well
I had a large number of power resistors I needed to mount to a large metal plate for thermal control and this compound worked really well. I am getting dissipation through the plate better than I expected and the paste was easy to use and keep contained during the assembly process. I have been a big fan of some specialty Dow products over the years and this thermal paste delivered as I would expect!
Trustpilot
3 weeks ago
3 weeks ago
