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A low resistance shunt is an electronic component that achieves high-precision current measurement by generating a small voltage drop proportional to the current. Its core advantage lies in the low resistance design, which can minimize interference with the tested circuit. The following are typical product application scenarios and technical logic analysis:
Low resistance shunt resistors are core components in current detection circuits, widely used in automotive electronics, industrial power supplies, battery management, and other scenarios. The following are outstanding brands and their representative product lines in the market, which are comprehensively organized based on their technical characteristics and market applications:
A low value current shunt is a resistor device used for precise measurement of large currents. Its core principle is to indirectly calculate the current flowing through the circuit by measuring the voltage drop across the resistor (Ohm's law \ (I=V/R \)). Its resistance is usually extremely low (in the milliohm range, such as 0.1m Ω to 100m Ω) to minimize power loss and adapt to high current scenarios.
ESR25F7W0M20M04G is made of manganese copper bare copper sheet alloy material, which not only has excellent conductivity, but also features high power, low temperature drift, and high surge resistance. Introduction to 2512 0.0002R/0.2mR 7W 1% Ultra High Power Bare Copper Alloy Resistors,
Introduction to Ellon brand new product: 2512 0.2mR/0.0002R 7W high-power bare copper sheet resistor. The ESR25F7W0M20M04G resistor adopts a compact package size of 2512 (6.4 * 3.2), which not only meets the requirements of modern electronic devices for miniaturization and integration, but also ensures the heat dissipation efficiency of the resistor during operation. Its resistance value is 0.0002R (0.2mR),
The EHOM brand EP1650-3 outdoor power supply has a built-in 1024Wh lithium iron phosphate battery, and the measured weight of the whole machine is about 13.7kg. The rated output power of the power supply is 1650W, with a peak output power of 2700W. It is a pure sine wave output and has three new national standard output interfaces. This outdoor power supply uses a large number of well-known brand electronic components, such as Zhirong's protocol chip SW3516P, Zhaoyi's innovative GD32F303RCT6, Renesas ISL81601, Yineng's ESR bare copper shunt resistor, Zhongying's SH367309, Beiling memory model BL24C256 and voltage regulator chip BL1084, etc.
After dismantling the new generation 1000 Pro energy storage power supply of the electric scooter, it was discovered that so many fuses and alloy resistors were used! For example, ESR3920 0.002R (2mR), 2512 0.002R (2mR), disposable fuses include 1032 60A and 2410 15A, and so on.
ETAKER Mobile Outdoor Power Supply is a rapidly emerging portable energy storage power supply that is convenient for outdoor travel and home emergency energy storage solutions. What specifications of alloy resistors and fuses are needed for a 2000W outdoor power supply from ETAKER Mobile, using a total of EMA25F3W0R001MDG, EMA25F3W0R003MDG，EMA25F3W0R005MDG，EMA25F3W0R04MDG，EMA25F3W0R010MDG， And there are 40A, 25A, and 60A in 2410 volume and 1032 volume, as well as a ceramic tube fuse TSC-T20AH250V (Content and Image Source: Charging Head)
ESR bare copper shunt resistors are mainly characterized by low resistance, high power, and low temperature drift, and are widely used in current sampling circuits. In current sampling circuits, the stability requirements for resistors are extremely strict. Therefore, different product materials have different product characteristics and application markets. With the market demand for product miniaturization, low power consumption, and fast charging and discharging, ELLON has launched a small volume high-power bare copper shunt resistor. This article provides a detailed introduction to the corresponding specification parameters.
The Fenghua (FH) low resistance shunt resistor AMS series products are low resistance shunt resistors that belong to the automotive certification standard and comply with AEC-Q200 automotive certification. Using bare copper electron beam welding technology, it has characteristics such as ultra-low resistance and ultra-high power, and is widely used in automotive electronics, new energy, energy storage, industrial automation and other products. This article provides a detailed introduction to the product characteristics, selection parameters, and mass production models of AMS series low resistance shunt resistors.
