Low resistance sampling resistors are widely used in electronic circuits, and different brands have different series. Below is a detailed introduction for you:
Walter
0603 series: There are various models such as MSTC0603MW33R002F (resistance 0.002R), MSTC0603MW33R003F (resistance 0.003R), etc., with a power of 0.33W and an accuracy of 1%. It is suitable for scenarios with certain volume requirements and moderate accuracy requirements, such as current sampling for ordinary consumer electronic devices.
0805 series: including MSTC0805MW501M50FL (resistance 1.5mR), MSTC0805MW50R002FL (resistance 2mR), etc., with a power of 0.5W and an accuracy of 1%. This series is resistant to high temperature, corrosion, impact, and low temperature coefficient, and is commonly used in fields such as power supply, LED lights, and instrumentation.
1206 series: such as MSTC1206M1W0R001F (resistance 1mR), MSTC1206M1W0R002F (resistance 2mR), etc., with a power of 1W and an accuracy of 1%. Suitable for current sampling and current limiting protection in high current environments, such as motor drive circuits.
Dayi (TA-I)
RLM series: It is a small package milliohm level alloy sampling resistor, with different packages such as RLM10 (resistance 0.25mR-50mR), RLM12 (resistance 0.25mR-50mR), etc. The accuracy is ± 1%/2%/5%, and the temperature drift is small, suitable for small-sized electronic devices with high requirements for accuracy and stability.
RLP series: High power alloy sampling resistors, such as RLP series models with resistance ranges from 1mR to 910mR, maximum power up to 5W, accuracy ± 1%/2%/5%, TCR of 50ppm/℃, suitable for current sampling scenarios that require high power carrying capacity, such as industrial power supplies.
RLN series: Long grade alloy sampling resistors, such as RLN0612 (resistance 1mR -30mR), with an accuracy of ± 1%/2%/5%. They have the characteristics of small size and can withstand excessive current, and are commonly used in circuits with limited space and high current.
RLF series: Alloy four terminal current sensing resistors, such as RLF06 (resistance 0.5mR-5mR), with an accuracy of ± 1%/2%/5%, ultra-low resistance and multiple soldering points, suitable for complex circuits with high requirements for current sampling accuracy.
Wang Quan (Ralec)
The resistance range varies from milliohm level (such as 0.1m Ω) to higher resistance values. The common milliohm level resistance range includes 0.1m Ω to 200m Ω, which is suitable for circuits that require precise control of current or voltage. Its products can meet different precision and power requirements and are widely used in various electronic devices that require current detection.
National Giant (Yageo)
The low resistance range is from 0.2 milliohms to 20 milliohms to reduce power loss. However, its resistance range may vary depending on the specific product series and application scenarios. This brand's products are reliable in quality and have high recognition in the electronic component market, commonly used in current detection circuits for various electronic products.
KOA
Provide low resistance current detection resistors, such as TSL, SL, SLN series, etc., with resistance values as low as 3m Ω or less. This series of resistors has made significant improvements in accuracy and affordability compared to the past, providing users with a high-precision and cost-effective option for use in measurement and control circuits that require high precision.
VISHAY WESHI
Models such as WSLF2512 have extremely low resistance values (such as 0.0003 Ω) and a wide range of resistance values, ranging from milliohms to higher resistance values. Its products have high precision and good stability, suitable for high-end electronic devices that require strict current sampling accuracy, such as precision measuring instruments, high-end medical equipment, etc.
Panasonic Electromechanical
The normal range of its resistance value is usually between 0.1 ohms and several thousand ohms, but the specific resistance range of surface mount resistors used for current detection may be narrower and may vary depending on the motor model and specifications. The brand's products have stable quality and are widely used in fields such as motor control and power management.
Viking
CS/TCS series: for current sensing resistors/sampling resistors, using unique materials and process technology to provide high quality and reliability. The temperature drift is a low resistance resistor with TCR 100ppm/℃, with a resistance range of 1mohm to 1000ohm, accuracy of ± 1% and 5%, and a power of up to 3W. It is suitable for current sampling of devices such as laptops, motherboards, screens, toy charging control boards, etc.
ROHM (ROHM)
MCR series: High precision thin film resistor series, using thin film technology, with extremely high accuracy and low temperature coefficient, error range usually within ± 0.1%, suitable for applications with extremely high current sampling requirements, such as power management and automotive electronics.
LR series: Low resistance power resistor series, designed for high current environments, with an extremely low resistance range, suitable for current sampling and current limiting protection. Versatile packaging, excellent heat dissipation performance, capable of withstanding large power loads, suitable for high current scenarios such as motor drives and power modules.
RK series: Thin film chip resistor series, with excellent stability and reliability, manufactured using thin film technology, suitable for industrial control and consumer electronics fields. This series has good impact resistance and low noise characteristics, suitable for current sampling in complex environments.
LRP series: Surface mount current sensing resistor, designed for surface mount, facilitating automated production and adapting to the trend of miniaturization in modern electronic products. It has small size, high precision, and good heat dissipation performance, suitable for portable devices and communication equipment.