The following is an explanation of the selection parameters for the 2512 package 1 Ω high-power resistor, sorted by material type:
1、 Metal film resistor series (Ellon brand)
basic type
EGM25FS1R00DDS: 2W power, 1% accuracy, ± 50ppm/℃ temperature drift, anti surge design
ELR25FS1R00DDS: 2W power, 1% accuracy, ± 50ppm/℃ temperature drift (conventional metal film)
EAM25FS1R00DDS: 2W power, 1% accuracy, ± 50ppm/℃ temperature drift, sulfur resistance characteristics
High power type
ELR25FR1R00DDS: 3W power, 1% accuracy, ± 50ppm/℃ temperature drift
EGM25FU1R00DDS: 3W power, 1% accuracy, ± 50ppm/℃ temperature drift, anti surge design
2、 Thick film resistor series
Ellon brand
EHP25FS1R00FDS: 2W power, 1% accuracy, ± 200ppm/℃ temperature drift
EHP25JS1R00FDS: 2W power, 5% accuracy, ± 200ppm/℃ temperature drift
EHP25FR1R00HDU: 3W power, 1% accuracy, ± 400ppm/℃ temperature drift
EHP25JR1R00HDU: 3W power, 5% accuracy, ± 400ppm/℃ temperature drift
Tian'er brand
CRH2512F1R00E04 S: 2W power, 1% accuracy, ± 100ppm/℃ temperature drift
Key selection points:
Power requirement: 2W/3W optional, depending on the heat dissipation conditions of the circuit board
Accuracy requirement: 1% suitable for precision circuits, 5% suitable for cost sensitive scenarios
Temperature stability: Metal film series (± 50ppm) is superior to thick film series (± 100-400ppm)
Special environment: anti surge (EGM series) and anti sulfurization (EAM series) suitable for harsh working conditions
Brand selection: Ellon is the main model, and Tian'er provides differentiated temperature drift parameters (± 100ppm)
