Introduction to 2512 1.8R High Power Resistance Parameter Models

The following is an introduction to the parameters of the 1.8 Ω (ohm) high-power resistor model for the 2512 package (size 6.4 × 3.2mm):

Ellon brand series
1. EHP25JR1R80HDU  
Power: 3W
Accuracy: ± 5%
Temperature Drift Coefficient (TCR): ± 400ppm/℃
Technology: Thick film process
Features: Standard high-power resistor, suitable for general scenarios.   

2. EHP25JS1R80FDS  
Power: 2W
Accuracy: ± 5%
Temperature Drift Coefficient (TCR): ± 200ppm/℃
Technology: Thick film process
Features: Medium power, better temperature drift performance than 5% precision models in the same series.   

3. EHP25FR1R80HDU  
Power: 3W
Accuracy: ± 1%
Temperature Drift Coefficient (TCR): ± 400ppm/℃
Technology: Thick film process
Features: High precision version, suitable for applications with strict resistance requirements.   

4. EHP25FS1R80FDS  
Power: 2W
Accuracy: ± 1%
Temperature Drift Coefficient (TCR): ± 200ppm/℃
Technology: Thick film process
Features: Balancing accuracy and temperature drift characteristics, with optimal cost-effectiveness.   

5. EAM25FS1R80DDS  
Power: 2W
Accuracy: ± 1%
Temperature Drift Coefficient (TCR): ± 50ppm/℃
Technology: Metal film process
Features: Anti sulfurization design, ultra-high stability, suitable for harsh environments such as industrial and automotive electronics.   

6. EGM25FU1R80DDS  
Power: 3.5W
Accuracy: ± 1%
Temperature Drift Coefficient (TCR): ± 50ppm/℃
Technology: Metal film process
Features: Strong surge resistance, ultra-high power density, suitable for high current impact scenarios (such as power modules).   

Samsung ElectroMechanics brand
7. CRH2512F1R80E04S  
Power: 2W
Accuracy: ± 5%
Temperature Drift Coefficient (TCR): ± 400ppm/℃
Technology: Thick film process
Features: Economical high-power resistor with strong versatility.   

Summary of Key Parameters
Power coverage: 2W (mainstream), 3W (high power), 3.5W (ultra-high performance).   
Precision options: ± 5% (basic), ± 1% (high precision).   
Temperature Drift Coefficient (TCR):
Thick film resistor: ± 200ppm/℃ or ± 400ppm/℃
Metal film resistance: ± 50ppm/℃ (ultra-high stability).   
Special performance:
Metal film series (EAM/EGM): resistant to vulcanization, surge, low temperature drift, suitable for harsh environments.   
EGM series: With a power of 3.5W, it is the top specification of the same size and can withstand strong current surges.   

Recommended by demand priority:
Cost sensitive scenario: Tian'er CRH2512F1R80E04S (thick film, ± 5%).   
Conventional high power: Ellon EHP25FR1R80HDU (3W ± 1%).   
High stability/sulfur resistance: Ellon EAM25FS1R80DDS (metal film ± 50ppm).   
Extreme power/surge resistance: Ellon EGM25FU1R80DDS (3.5W metal film).