Quick Answer
Calculate PCB Solder Joint Characteristic Impedance Calculator
Calculator
Result Interpretation
PCB Solder Joint Characteristic Impedance Calculator computes Characteristic impedance in ohm using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Solder joint inductance per unit length = 1.2E-9
- Solder joint capacitance per unit length = 8.5E-12
- Solder joint width = 0.00015
Expected Result:
- Characteristic impedance = 88185015558.242
Engineering Interpretation:
Under the given input conditions, the calculated result is: Characteristic impedance = 88185015558.242 ohm.
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
characteristic impedance = sqrt(solder joint inductance per unit length / solder joint capacitance per unit length) * (1 + 0.475 * pow(solder joint width / solder joint inductance per unit length, 2))Formula family: formula_pcb_solder_joint_characteristic_impedance_calculator
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| Solder joint inductance per unit length | Solder joint inductance per unit length | INPUT | Solder joint inductance per unit length |
| Solder joint capacitance per unit length | Solder joint capacitance per unit length | INPUT | Solder joint capacitance per unit length |
| Solder joint width | Solder joint width | INPUT | Solder joint width |
| Characteristic impedance | Characteristic impedance | OUTPUT | Characteristic impedance |
Calculation Steps
- Enter the solder joint inductance per unit length in H/m.
- Enter the solder joint capacitance per unit length in F/m.
- Enter the solder joint width in m.
- Step 1: Compute characteristic impedance.
- Read the characteristic impedance (ohm) from the results.
Engineering Summary
Calculate PCB Solder Joint Characteristic Impedance Calculator
Frequently Asked Questions
What does this calculator calculate?
The PCB Solder Joint Characteristic Impedance Calculator estimates Characteristic impedance based on the input parameters you provide
Why is solder joint inductance per unit length important in this calculation?
solder joint inductance per unit length is directly proportional to characteristic impedance. When you enter solder joint inductance per unit length in H/m, the calculator uses it in the engineering formula to compute the output
How should I interpret the result characteristic impedance?
The calculator outputs characteristic impedance in ohm. 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 joint inductance per unit length (H/m), Solder joint capacitance per unit length (F/m), Solder joint width (m). 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
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