Based on your requirements, the following is a recommended analysis of key models for the 2512 package 100 Ω resistor (not in tabular form):
1、 High power/high precision preferred (3W, 1%)
EHP25FR100RFDU (Ellon)
Core advantages: 3W ultra-high power (top-level level in 2512 package), ± 1% accuracy, wide temperature range (55 ℃~+155 ℃), 200ppm/℃ temperature drift.
Applicable scenarios: Industrial power supplies, high current sampling, motor drives and other high heat dissipation requirements, suitable for designs with extremely high power margin requirements.
EHP25FR100REDU (Ellon)
Core advantage: Same 3W power, ± 1% accuracy, but better temperature drift (100ppm/℃).
Applicable scenarios: Precision circuits that require high power and higher temperature stability, such as testing equipment and precision power supplies, are flagship models that balance performance and stability.
2、 Balanced Choice (2W, 1%, mainstream application)
CRH2512F100RE04Z (Tian'er Techwin)
Core advantages: 2W power meets most needs, ± 1% accuracy, high cost-effectiveness, and good brand recognition.
Applicable scenarios: Mainstream high-power resistor applications such as consumer electronics power supplies, automotive electronics, and general industrial control boards are reliable basic choices.
EHP25FS100REDS (Ellon)
Core advantages: 2W power, ± 1% accuracy, compact and reliable structure.
Applicable scenarios: PCB designs with limited space but clear requirements for power and accuracy (such as compact power modules, LED drivers).
3、 High power economy type (3W, 5%, cost sensitive type)
EHP25JR100RFDU / EHP25JR100REDU (Ellon)
Core advantage: 3W ultra-high power, but the accuracy is relaxed to ± 5%, providing two temperature drift options (200ppm/℃ or 100ppm/℃).
Applicable scenarios: In situations where absolute resistance accuracy is not high, but high power carrying capacity is required (such as surge protection, pre charging circuits, and high current shunting), it is a practical solution for cost control.
Summary recommendation logic
Pursuing ultimate power&stability → EHP25FR100RFDU (3W/1%/200ppm) or EHP25FR100REDU (3W/1%/100ppm)
Mainstream high-power demand&high cost performance → CRH2512F100RE04Z (Tianyi 2W/1%)
Space limitation still requires 2W power → EHP25FS100REDS (Ellon 2W/1%)
Requires 3W power and is cost sensitive → EHP25JR100RFDU/REDU (3W/5%)
Key selection considerations
Power derating: The 3W resistor must strictly follow the manufacturer's derating curve (especially in high temperature environments), and the actual power used may be lower than the nominal value.
Temperature drift coefficient (ppm/℃): 100ppm for precision circuits and 200ppm for general circuits are acceptable.
Brand supply: Both Techwin and Ellon are reliable brands, selecting models with stable inventory or smooth procurement channels.
It is recommended to lock in the final model based on the actual power requirements, accuracy requirements, temperature drift sensitivity, and cost budget of the circuit. The above recommendations have covered the core requirements of mainstream application scenarios.