Power · Calculator
Large Shunt Resistor
Compute voltage drop, dissipated power, and thermal estimates for high-current sense resistors.
Adjust inputs and the results update automatically.
Shunt & Operating Conditions
Model
V_drop = I × R P_diss = I² × R ΔT = P_diss × θ_JA
Steady-state DC current assumed. For pulse or PWM currents, derate using RMS current. Large shunts typically include Kelvin sense connections to remove lead-resistance error.
Results
Voltage Drop
50.00mV
Power Dissipation
2.500W
Power Utilization
50.0%
Temperature Rise
50.0°C
Estimated Hot-Spot
75.0°C
Assessment
Acceptable — moderate margin
Example Component Suggestions
Illustrative only — no real part numbers or manufacturers referenced.
Best Match
Example Component A
General-purpose, mid-range tolerance
Alternate
Example Component B
Precision class, low drift
Stretch
Example Component C
High-power, extended range