The following are recommended brands and corresponding models of surface mount resistors with a 2512 package (6.4mm × 3.2mm), a resistance of 0 Ω, and a power of 2W (excluding tables), combined with parameter characteristics and application scenarios:
1、 Key recommended models
1. Ellon EHP25JS0R00VDJ
Parameters: 0 Ω± 5% accuracy, 2W power, thick film process, temperature coefficient ± 600ppm/℃ (conventional thick film level).
Features: Adopting a "thick film power up" design, achieving a power density of 2W within the 2512 package, with outstanding cost-effectiveness; Suitable for jumper or connectivity scenarios with low precision requirements in consumer electronics such as LED drivers and power management.
Supply chain: The minimum packaging quantity is usually 4000 pieces/plate, and attention should be paid to the high temperature drift (600ppm). The stability in high temperature environments is weaker than that of alloy resistors.
2. Ever Ohms CRH2512J0R00E04Z
Parameters: 0 Ω± 5% accuracy, 2W power, thick film process, working voltage of 200V, temperature range of 55 ℃~+155 ℃.
Features: The representative model of the Tian Er CRH series high-power resistor, compatible with automated soldering, with an overvoltage resistance of up to 300V; suitable for current path connection of general PCB jumpers and power modules, with a unit price of less than ¥ 0.3/piece (high cost-effectiveness).
Supply Chain: Minimum order quantity of 10 pieces, bundled packaging (4000 pieces/plate), fast delivery time (shipped within 72 hours when inventory is sufficient).
2、 Expansion of other brands and models
In addition to the above two models, the following models can also be considered as alternatives (both meet the requirement of 25120R 2W):
1. Ever Ohms Technology
CR2512J0R00E04Z: Thick film ± 5%, 2W, similar to CRH series parameters, but with slight differences in terminal electrode process.
MA251220JR000CZ: alloy material, 2W power, temperature drift ≤ 50ppm/℃, certified by AECQ200 automotive standards; Suitable for high reliability scenarios such as automotive electronics (such as BMS systems) and industrial control, but at a higher cost (¥ 1.5-2.5 per piece).
2. Ellon (Billion Energy)
EHP25FSR500JDL: Although the nominal resistance is 0.5 Ω, there is a 0 Ω model in the same series (EHP25JS0R00 series), with an optional ± 1% accuracy version and a temperature drift of 600ppm.
3. Alternative solutions (to be considered when out of stock)
Vishay: WSL25121L000FEA (1W thick film, needs to be downgraded for use).
TT Electronics: LRZ2512R000 (2W alloy resistor, supports 35A instantaneous current, suitable for high impact scenarios).
3、 Application scenarios and selection suggestions
Consumer Electronics/Power Management: The preferred choice is the Tian'er CRH series (such as CRH2512J0R00E04Z) or the Ellon EHP thick film series, which are low-cost and meet basic connectivity requirements.
Automotive Electronics/Industrial Control: Required alloy resistors (such as Tianyi MA251220JR000CZ), high temperature resistance, sulfur resistance, and certified by automotive regulations.
High precision scenario: If you need ± 1% accuracy, you can choose the Tian'er CR2512F0R00E04Z (thick film) or Ellon EHP25FSR series.
>Key precautions:
> 1. Heat dissipation design: 2W power needs to be matched with sufficient PCB copper foil area (recommended ≥ 10mm ²) to avoid temperature rise failure caused by long-term full load.
> 2. Welding process: peak temperature of thick film resistor reflow soldering ≤ 260 ℃; We recommend wave soldering for alloy resistors to reduce the risk of electrode delamination at the low end.
> 3. Layout optimization: The jumper path should be as short and straight as possible, and Kelvin connections should be used in high current scenarios (>10A) to reduce the impact of contact resistance.