The following is a comparative analysis of alloy resistor brands, models, and characteristics with 2512 package, 0.001 Ω (1m Ω), ± 1% accuracy, and different power levels, compiled from multiple brand parameters and industry data:
1、 1W power model
Viking LR12FTD R001
Parameters: 2512 package, 0.001 Ω, ± 1% accuracy, 1W power, temperature coefficient ± 50ppm/℃, working temperature -50 ℃~+170 ℃
characteristic:
Adopting alloy plate and electroplating tin process, supporting wave soldering and reflow soldering;
The black appearance is a universal type, and the green appearance is only suitable for reflow soldering (the model includes the suffix "G");
Suitable for industrial power supply, motor drive and other scenarios.
Vishay WSL25121L000FEA
Parameters: 2512 package, 0.001 Ω, ± 1% accuracy, 1W power, temperature coefficient ± 275ppm/℃ (low resistance range)
characteristic:
Exclusive metal strip process, suitable for current sensing and pulse applications;
It has been discontinued, but inventory or alternative models can be consulted with the supplier.
2、 2W power model
Walter MSH2512M2W0R001F
Parameters: 2512 package, 0.001 Ω, ± 1% accuracy, 2W power, temperature coefficient ≤ 50ppm/℃
characteristic:
Manganese copper alloy material with excellent resistance to sulfurization and moisture;
Suitable for high power density scenarios such as new energy vehicle BMS and industrial automation.
RALEC LR2512-22R001F4
Parameters: 2512 package, 0.001 Ω, ± 1% accuracy, 2W power, temperature coefficient ≤ 50ppm/℃
characteristic:
Supports wide temperature operation from -55 ℃ to+170 ℃, passed vehicle grade reliability testing;
Kunshan and Malaysia have dual production bases with stable supply.
Ever Ohms MA251220FR001SZ
Parameters: 2512 package, 0.001 Ω, ± 1% accuracy, 2W power, temperature coefficient ≤ 50ppm/℃
characteristic:
Manganese copper tin alloy material, low noise (<0.1 μ V/V);
Suitable for precision scenarios such as medical equipment, 5G base station RF modules, etc.
3、 3W power model
Walter MSH2512M3W0R001F
Parameters: 2512 package, 0.001 Ω, ± 1% accuracy, 3W power, temperature coefficient ≤ 50ppm/℃
characteristic:
Ultra high power density design, excellent heat dissipation performance;
Suitable for high current scenarios such as PD fast charging and photovoltaic inverters.
RALEC LR2512-23R001F4
Parameters: 2512 package, 0.001 Ω, ± 1% accuracy, 3W power, temperature coefficient ≤ 50ppm/℃
characteristic:
Made of iron chromium aluminum alloy material, with a surge resistance of up to 500A/μ s;
Approved by AEC-Q200 certification, suitable for automotive electronics and industrial power supply.
Ever Ohms MA251230FR001SZ
Parameters: 2512 package, 0.001 Ω, ± 1% accuracy, 3W power, temperature coefficient ≤ 50ppm/℃
characteristic:
Ceramic alloy substrate, supporting instantaneous high temperature (peak value 275 ℃);
Suitable for high reliability demand scenarios such as energy storage systems and server power supplies.
5、 Selection suggestions
Industrial and consumer electronics: Priority should be given to choosing the Tian'er or Wangquan 2W models, balancing cost and performance;
Automotive electronics: It is necessary to use the AEC-Q200 certified Wangquan LR2512 series or Huade MSH series;
High power demand: 3W models (such as Huade MSH2512M3W) are suitable for PD fast charging, photovoltaic inverters and other scenarios;
Alternative solution: If the Vishay model is discontinued, the Guangjie LR series or Tianer MA series can be used as alternatives.
For a more complete list of models or supply information, please refer to the brand's official website or contact agents (such as Shunhai Technology, ).
