Pcb Engineering

IPC-7351B-Inspired Solder Joint Pad Size Calculator for PCB Land Patterns calculator

IPC-7351B-Inspired Solder Joint Pad Size Calculator for PCB Land Patterns engineering calculator.

Quick Answer

Calculate IPC-7351B-Inspired Solder Joint Pad Size Calculator for PCB Land Patterns

Calculator

Solder Joint Pad Size (m)
—

Result Interpretation

IPC-7351B-Inspired Solder Joint Pad Size Calculator for PCB Land Patterns calculator computes Solder Joint Pad Size in m using the defined engineering formula and the input values provided.

Worked Example

Verified calculation

Given:

  • PCB Fabrication Tolerance = 7.5E-5
  • Solder Paste Expansion Margin = 0.0001
  • Component Termination Diameter = 0.0003

Expected Result:

  • Solder Joint Pad Size = 0.00053541019662497

Engineering Interpretation:

Under the given input conditions, the calculated result is: Solder Joint Pad Size = 0.00053541019662497 m.

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

solder joint pad size = sqrt(pow(component termination diameter, 2) + pow(2 * pcb fabrication tolerance, 2)) + 2 * solder paste expansion margin

Formula family: formula_pcb_solder_joint_pad_size_calculator

Variables

SymbolLabelRoleDescription
input_component_termination_diameter Component Termination Diameter INPUT Component Termination Diameter
input_fabrication_tolerance PCB Fabrication Tolerance INPUT PCB Fabrication Tolerance
input_solder_expansion_margin Solder Paste Expansion Margin INPUT Solder Paste Expansion Margin
Solder Joint Pad Size Solder Joint Pad Size OUTPUT Solder Joint Pad Size

Calculation Steps

  1. Enter the component termination diameter in m.
  2. Enter the pcb fabrication tolerance in m.
  3. Enter the solder paste expansion margin in m.
  4. Step 1: Compute solder joint pad size.
  5. Read the solder joint pad size (m) from the results.

Engineering Summary

Calculate IPC-7351B-Inspired Solder Joint Pad Size Calculator for PCB Land Patterns

Frequently Asked Questions

What does this calculator calculate?

The IPC-7351B-Inspired Solder Joint Pad Size Calculator for PCB Land Patterns calculator estimates Solder Joint Pad Size based on the input parameters you provide

Why is component termination diameter important in this calculation?

component termination diameter is directly proportional to solder joint pad size. When you enter component termination diameter in m, the calculator uses it in the engineering formula to compute the output

How should I interpret the result solder joint pad size?

The calculator outputs solder joint pad size in m. 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: Component Termination Diameter (m), PCB Fabrication Tolerance (m), Solder Paste Expansion Margin (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

Related Tools

Browse More Tools

Explore the full index of engineering calculators on this vertical site.