Enter Conditions
For preliminary screening only. Test samples under actual assembly conditions before final selection.
Heat Source
W
Heat generated under operating conditions
℃
Maximum temperature at the source contact surface
Cooling & Assembly
℃
Estimated temperature at the TIM–heat sink interface
Select the closest assembly pressure
Effective Contact Area
mm
mm
Effective Contact Area
Default: 25.4 × 25.4 mm. Adjust to the actual contact size.
Calculation Method & Assumptions
Q = k · A · (Th − Tc) / L
Heat flow Q depends on temperature difference, area A, conductivity k, and thickness L.
Th − Tc = Q · L / (k · A)
Rearranging the formula gives the estimated temperature difference across the material.
Rt ≈ L / k
The tool uses catalog Rt data to estimate the TIM temperature difference. Rt varies with test thickness and contact conditions.
Estimated Source Temperature Th = Tc + (Q × Rt) / A
| Symbol | Meaning |
|---|---|
| Q | Source power (W) |
| k | TIM conductivity (W/m·K) |
| L | TIM thickness (m) |
| A | Effective contact area (in²) |
| Rt | TIM thermal impedance (°C·in²/W) |
| Th | Estimated source temperature (°C) |
| Tc | Heat sink temperature (°C) |
Preliminary estimate only. Test under actual assembly conditions before final selection.
Product Results
Review products meeting the temperature limit, then filter by family and material.
Heat Source Power：
Max. Source Temperature：
Heat Sink Temperature：
TIM Contact Pressure：
Contact Area：
| Product | Product Series | Est. Th | Material | W/m·K | Pressure Used | ℃·in²/W | Product Info |
|---|
No products match all conditions. Adjust the temperature limit, contact area, or filters.
If the conditions cannot change, contact LiPOLY Technical Support.
No data at the selected pressure; nearest value used
Estimated temperature exceeds the limit
Notes
Before Use
- Values are typical catalog thermal impedance data. Actual performance varies with surface flatness, pressure uniformity, assembly, aging, and other factors.
- Results support preliminary screening only and do not replace sample testing or system validation. Test before mass production or consult Sales or Technical Support.
- LiPOLY does not warrant final design decisions based on these results.
Result Notes
- Results use typical catalog thermal impedance data (°C·in²/W).
- If the selected pressure has no data, the nearest available pressure is used and marked yellow.
- Items without product pages show “Page in Progress.” Contact Sales or Technical Support for details.