How to select a 1% power resistor for 1206 2.4R 1W
Date:2025-06-27
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Regarding the selection of resistors with 1206 packaging, 2.4 Ω resistance, 1W power, and ± 1% accuracy, a comprehensive analysis is conducted based on the core characteristics, applicable scenarios, and cost-effectiveness of each model
1、 Comparison of Key Parameters of Models
|Model | Brand/Series | Core Advantages | Applicable Scenarios | Temperature Coefficient | Price Reference (in thousands of pieces)|
|EAM16FT2R40DES | Energy resistant (sulfur resistant) | Corrosion resistant, multi-layer passivation protection | Sulfur containing environment (automotive ECU, industrial) | ± 50ppm/℃ | ¥ 0.420.5|
|EGM16FT2R40DES | Billion Energy (anti surge) | High anti surge (20A/10 μ s) | Industrial frequency conversion/automotive OBC/fast charging | ± 50ppm/℃ | ¥ 0.350.42|
|TGL120610F2R40P05Z | Day 2 (anti surge) | 100000 surge life | Photovoltaic/energy storage/PLC port protection | ± 50ppm/℃ | ¥ 0.370.46|
|TRL120610F2R40P05Z | Day 2 (high precision) | Low temperature drift (± 0.5% fluctuation) | Medical/communication equipment precision sampling | ± 50ppm/℃ | ¥ 0.280.37|
|TSL120610F2R40P05Z | Tian'er (Basic) | Low cost, basic protection | Consumer electronics/power management | ± 100ppm/℃ | ¥ 0.320.40|
|ELR16FT2R40DES | Yineng (to be confirmed) | Parameters unclear, cautious selection | Need to verify sulfurization/surge resistance | Speculation ± 50ppm/℃ | Request for quotation|
Note: The parameters of the ELR series are not explicitly mentioned in public information and may be similar to EAM/EGM, but certified models should be preferred.
2、 Recommended models based on application scenarios
1. Highly corrosive environment (sulfur-containing/humid heat)
Preferred model: EAM16FT2R40DES
Multi layer passivation process (SiO ₂+epoxy resin) blocks sulfur penetration, complies with ASTM B80995 standard, and has a lifespan three times that of ordinary resistors;
Applicable scenarios: fuel vehicle ECU, mining equipment, coastal photovoltaic inverters.
2. High wave surge scenario (instantaneous current surge)
Preferred model: EGM16FT2R40DES (Yineng) or TGL120610F2R40P05Z (Tian'er)
EGM series: nickel chromium alloy+thickened electrode, capable of withstanding 20A/10 μ s surge, certified by AECQ200, suitable for automotive OBC and industrial frequency converters;
TGL series: Optimized electrode heat dissipation structure, surge life>100000 times (IEC 6100045), compatible with photovoltaic MPPT controller.
3. Precise measurement scenarios (low noise/low temperature drift)
Preferred model: TRL120610F2R40P05Z
Resistance fluctuation<0.5% (55 ℃~125 ℃), noise<5 μ Vrms, suitable for medical instrument signal acquisition and communication motherboard current detection.
4. Consumer electronics/cost sensitive scenarios
Preferred model: TSL120610F2R40P05Z
± 100ppm/℃ temperature drift meets general needs, with a price 15% lower than similar products, suitable for fast charging adapters and smart home power supplies.
3、 Selection precautions
1. Temperature coefficient difference
The temperature drift of EAM/EGM and TGL/TRL is ± 50ppm/℃, which is better than the ± 100ppm/℃ of TGL/TRL. If the working temperature range is wide (such as 40 ℃~105 ℃), the ± 50ppm/℃ model is preferred.
2. Supply and Cost
Yineng EGM: The most cost-effective (20% lower than Japanese brands), available in bulk in early July;
Day 2 TRL: Adequate inventory, lowest unit price (starting from ¥ 0.28/piece);
TGL on Tuesdays: The delivery time is about 6 weeks and needs to be planned in advance.
3. Certification requirements
AECQ200 certified models (such as EGM series) must be selected for automotive electronics (such as OBC, BMS);
Industrial scenarios require attention to sulfur resistance (EAM) or surge certification (TGL).
4、 Summary and Suggestions
Comprehensive Optimal Selection: EGM16FT2R40DES (Billion Energy)
Balancing surge resistance, low temperature drift, and vehicle certification, with outstanding cost-effectiveness, covering mainstream industrial/automotive scenarios.
Alternative solution:
Sulfur containing environment → EAM16FT2R40DES;
Precision measurement → TRL12061F2R40P05Z;
Consumer Electronics → TSL120610F2R40P05Z.
Tip: ELR series parameters are not publicly available, it is recommended not to use them temporarily; If confirmation is necessary, please contact the official website of Yineng to obtain the specification sheet. Priority should be given to purchasing through Huanian Mall (hnsthop.com) or brand authorized channels to ensure authenticity and supply stability.