ESR39F3WR005F02G Metal Shunt Chip Resistor: 3920 0.005R(5m Ohm) 3W 1% Precision Current Sensing Resistor
In high-current detection circuits such as industrial electronic control, new energy power supply, automotive electronics and smart home appliances, shunt resistors with low resistance, high power and high precision are core components for circuit sampling, current monitoring and circuit voltage stabilization protection. Adopting the standardized 3920 package, ultra-low resistance of 0.005R (5m Ohm), high rated power of 3W and high precision tolerance of 1%, the ESR39F3WR005F02G metal shunt chip resistor is a highly versatile industrial-grade precision current sampling resistor. The 3920 0.005R(5m Ohm) 3W metal shunt chip resistor is made of FaCrAl material. With low temperature drift, high stability and strong surge resistance, it strictly complies with international environmental protection standards and is an optimal component for high-power circuit current collection.
Material determines the core performance of resistors. The 3920 0.005R(5m Ohm) 3W metal shunt chip resistor is made of high-quality FaCrAl ferrochromium aluminum alloy. Compared with ordinary copper-nickel alloy resistors, FaCrAl material has the advantages of high temperature resistance, corrosion resistance, stable resistivity and low thermal expansion coefficient. It is not easy to deform or oxidize under long-term electrification and high-current impact, ensuring constant resistance and avoiding sampling deviation.
In terms of structure, the standardized 3920 package is compatible with automated SMT packaging technology to improve production efficiency. The resistor adopts an integrated metal stamping molding process with firm structure, excellent vibration resistance and physical impact resistance. The optimized heat dissipation structure enables the 3920 0.005R(5m Ohm) 3W resistor to conduct and dissipate heat quickly, eliminating component damage caused by heat accumulation during high-power operation.
The tolerance of the 3920 0.005R(5m Ohm) 3W metal shunt chip resistor is precisely controlled at ±1%. Designed for high-current sampling scenarios, its ultra-low resistance minimizes voltage loss in the circuit. It can accurately capture tiny current changes and provide precise sampling data for control chips, ensuring consistent operation of batch products.
Relying on FaCrAl material characteristics and optimized alloy ratio technology, the 3920 0.005R(5m Ohm) 3W resistor achieves extremely low temperature drift. Within the wide operating temperature range of -55℃~170℃, the resistance fluctuation is minimal. It maintains stable resistance output under extreme temperature conditions, suitable for outdoor industrial equipment, vehicle-mounted electronics and other harsh application scenarios.
After special hardening treatment, the 3920 0.005R(5m Ohm) 3W metal shunt chip resistor has outstanding pulse impact resistance and surge resistance. With a rated power of 3W, it can withstand short-term overload current impact, buffer current fluctuations, protect precision electronic components, and extend the service life of electronic equipment.
The ESR39F3WR005F02G metal shunt chip resistor adheres to international environmental protection production standards with lead-free production technology. It has passed RoHS and REACH environmental certifications, containing no harmful heavy metals. It meets global electronic industry environmental control requirements and export trade standards. The environmentally friendly packaging material is corrosion-resistant with a long storage cycle, reducing procurement and storage costs.
With the comprehensive advantages of ultra-low resistance, high power and high stability, the 3920 0.005R(5m Ohm) 3W metal shunt chip resistor is widely used. It is applicable to lithium battery protection boards, charging pile power modules, automotive motor control systems, frequency converters, automatic control cabinets, smart home appliances and medical electronic equipment. It is an essential core sampling component for circuits requiring precise current monitoring and current limiting protection.
To sum up, with the core parameters of 3920 package, 0.005R(5m Ohm) resistance, 3W power and 1% high precision, the ESR39F3WR005F02G metal shunt chip resistor adopts high-quality FaCrAl material, integrating multiple performance advantages such as low temperature drift, surge resistance and high heat dissipation. Complying with RoHS and REACH lead-free environmental protection standards, the 3920 0.005R(5m Ohm) 3W resistor meets the design requirements of high power and high precision in the modern electronic industry. It has become a mainstream shunt sampling resistor in industrial electronic control, new energy and automotive electronics fields with high market application value.
