Quick Answer
Calculate Thermal Resistance of Cylindrical Solder Bump (Flip-Chip)
Calculator
Result Interpretation
Thermal Resistance of Cylindrical Solder Bump (Flip-Chip) calculator computes Thermal resistance of single solder bump in K/W using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Thermal conductivity of solder alloy = 48
- Solder bump height = 4.5E-5
- Solder bump diameter = 9.0E-5
Expected Result:
- Thermal resistance of single solder bump = 147.36568804805
Engineering Interpretation:
Under the given input conditions, the calculated result is: Thermal resistance of single solder bump = 147.36568804805 K/W.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.
Formula / Method
thermal resistance of single solder bump = (solder bump height / (thermal conductivity of solder alloy * 3.14159265358979 * pow(solder bump diameter / 2.0, 2.0)))Formula family: formula_microelectronics_thermal_resistance_of_flip_chip_solder_bumps_calculator
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| bump_height | Solder bump height | INPUT | Solder bump height |
| bump_diameter | Solder bump diameter | INPUT | Solder bump diameter |
| k_solder | Thermal conductivity of solder alloy | INPUT | Thermal conductivity of solder alloy |
| thermal_resistance | Thermal resistance of single solder bump | OUTPUT | Thermal resistance of single solder bump |
Calculation Steps
- Enter the solder bump height in m.
- Enter the solder bump diameter in m.
- Enter the thermal conductivity of solder alloy in W/(m*K).
- Step 1: Compute thermal resistance of single solder bump.
- Read the thermal resistance of single solder bump (K/W) from the results.
Engineering Summary
Calculate Thermal Resistance of Cylindrical Solder Bump (Flip-Chip)
Frequently Asked Questions
What does this calculator calculate?
The Thermal Resistance of Cylindrical Solder Bump (Flip-Chip) calculator estimates Thermal resistance of single solder bump based on the input parameters you provide
Why is solder bump height important in this calculation?
solder bump height is directly proportional to thermal resistance of single solder bump. When you enter solder bump height in m, the calculator uses it in the engineering formula to compute the output
How should I interpret the result thermal resistance of single solder bump?
The calculator outputs thermal resistance of single solder bump in K/W. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Solder bump height (m), Solder bump diameter (m), Thermal conductivity of solder alloy (W/(m*K)). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
Browse More Tools
Explore the full index of engineering calculators on this vertical site.