Engineering Hub
Technical resources for engineers designing DC current measurement systems: calculators, selection guides, formulas and practical notes for shunt resistors.
Shunt Resistor Calculator
Calculate shunt resistance (mΩ) and power dissipation (W) from current (A) and voltage drop (mV). Useful to size an mV shunt and prepare your RFQ.
How to choose 50mV / 75mV / 100mV shunts
Practical guide to select the voltage drop of a shunt: trade-offs between power dissipation, noise margin, cabling and measurement resolution.
Power dissipation & temperature rise
Understand how I²R losses influence temperature rise and stability. Includes sizing notes, duty cycle considerations and cooling hints.
Kelvin connection (4-wire) explained
Learn why 4-wire sensing is essential for accurate low-resistance measurement. Wiring best practices for industrial environments.
Quick RFQ checklist
To get a fast technical quotation, include:
- Nominal current (A) and overload profile
- Required voltage drop (mV)
- Accuracy / tolerance and drift requirements
- Ambient and operating temperature range
- Mounting constraints and available space
- Annual quantity and target lead time