What are the advantages of bare copper sheet resistors?

Analysis of the significant advantages of bare copper sheet resistors(Recommended for the Yineng Elon ESR series)
In the field of electronic components, there are various types of resistors that play irreplaceable roles. Among them, bare copper resistors, as a fundamental and critical component, have demonstrated unparalleled advantages in numerous application scenarios due to their unique physical structure and material properties. This article will explore in detail several core advantages of bare copper resistors.
1. Excellent conductivity and low resistance value
The most direct advantage of bare copper resistance comes from its material itself. High purity copper is an excellent conductor second only to silver, and its inherent low resistivity characteristics enable bare copper sheet resistors to achieve extremely low resistance values. This characteristic makes it very suitable for circuits that are highly sensitive to path voltage drop, such as high current sampling and current detection. By measuring the small voltage drop generated at both ends of the bare copper resistor when current flows through, the system can accurately monitor and control the current, ensuring stable operation of the equipment.
2. Powerful overcurrent and heat dissipation capabilities
Due to the removal of traditional ceramic or paint film packaging on the outside of the resistor, the bare copper sheet is directly exposed to the environment, which brings excellent heat dissipation performance. When a large current passes through, the resistor itself generates heat, and the huge surface area of bare copper and the excellent thermal conductivity of the metal itself can quickly dissipate heat to the surrounding air or conduct it to the PCB board through solder joints, effectively preventing heat accumulation. This means that bare copper resistors can withstand short-term high current surges and have strong overload capabilities, greatly improving the reliability of the circuit.
3. Sturdy structure and high reliability
Bare copper sheet resistors are usually stamped or etched from a single piece of metal sheet, with a structure formed in one piece, which is very sturdy and durable. It does not have brittle ceramic cores or easily damaged coatings, so it exhibits better stability than many traditional resistors when facing mechanical vibrations, impacts, or drastic temperature changes. This physical robustness makes it the preferred choice in harsh environments such as automotive electronics and industrial control systems.
4. Cost effectiveness and installation convenience
From a manufacturing perspective, the raw material cost of bare copper resistors is relatively low, and the production process is also relatively simple, which brings good cost-effectiveness. In terms of installation, it usually adopts surface mount or soldering methods, which can perfectly integrate with the PCB board, achieve automated production, and effectively reduce assembly costs and time. For situations that require low resistance and high power, using a bare copper resistor is often more economical and space efficient than paralleling multiple traditional resistors.
summary
In summary, bare copper resistors play an important role in many fields such as power management, motor drives, battery protection boards, etc. due to their low resistance, high current carrying capacity, excellent heat dissipation performance, and sturdy and reliable structure. Although it is not suitable for high resistance applications, bare copper resistors provide an efficient, economical, and reliable solution in their expertise in low resistance and high current fields.