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| Customization: | Available |
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| Resistance: | Fixed Resistor |
| Function for Resistance: | Sampling Resistor |
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Frequency converter milliohm manganese copper shunt sampling resistor micro ohm used in solar
Frequency converter: A power electronic device that adjusts the frequency and voltage of alternating current (AC) to control the speed of AC motors. It requires accurate current monitoring for stable operation, overload protection, and performance optimization, making reliable current sampling components essential.
Milliohm: Indicates the resistance value range of the resistor, typically in the milliohm (mΩ) level (1 milliohm = 0.001 ohm). This low resistance ensures minimal voltage drop and power loss when large currents pass through, making it suitable for high-current sampling scenarios common in frequency converters.
Manganese copper: Refers to the core material of the resistor. Manganese copper (a copper-manganese-nickel alloy) is chosen for its excellent properties: low temperature coefficient of resistance (ensuring stable resistance under temperature fluctuations), high resistivity, and good solderability. These traits make it ideal for precision current measurement.
Shunt sampling resistor: Functions as a shunt in the circuit. When current flows through the resistor, a small voltage drop (proportional to the current, per Ohm's Law: V = I×R) is generated across it. This voltage is then measured by monitoring circuits to calculate the actual current in the frequency converter, enabling real-time current sampling and feedback control.
Product application scope: solar photovoltaic (new energy company), high-power power supply, inverter power supply, EPS power supply, inverter frequency converter, power system, communication power supply, communication products, charging piles, electrical companies, Hongbo power supply, automotive electronics, industrial control and automation, mechanical equipment, high-speed trains, electric vehicle charging control boards, as well as the drone industry
Small size
Best quality
Chip package
| General parameter | General pitch | Tolerance |
| 10A-50mV 20A-50mV 30A-75mV 33A-50mV 50A-50mV 60A-50mV 65A-50mV 75A-30mV 75A-50mV 75A-75mV 100A-40mV 100A-50mV 100A-75mV 100A-100mV 200A-100mV … |
6.5mm 7mm 8.5mm 10mm 10.5mm … |
±0.5% |
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