The following is an analysis of resistor model selection for 1206 package, 2.7 Ω resistance (note: the user's query for "2.4R" should be a typo, and the listed models are actually 2.7 Ω), 1W power, and ± 1% accuracy, combined with technical characteristics, application scenarios, and market supply comprehensive comparison:
1、 Comparison of core characteristics of various models
2、 Selection suggestion: prioritize selection according to application scenarios
High wave impact scene (industrial/automotive)
Preferred: EGM16FT2R70DES
The anti surge capability is significantly better than other models (with a 20% increase in conductive area and a pulse tolerance of 15A/10 μ s), certified by AECQ200, and suitable for automotive OBC, frequency converter current sampling, etc.
Alternative: TGL120610F2R70P05Z
The surge withstand frequency exceeds 100000 times, suitable for medium surge environments such as photovoltaic inverters and energy storage PCS.
Precision measurement scenarios (medical/communication)
Preferred: TRL120610F2R70P05Z
Low temperature drift (± 50ppm/℃) and low noise characteristics ensure signal acquisition accuracy (such as electrocardiogram machine, communication motherboard current detection).
Adverse environment (sulfur-containing/high temperature)
Preferred: TSL120610F2R70P05Z
Anti sulfide design prevents sulfide corrosion of electrodes, suitable for sulfur-containing environments in chemical and oil and gas equipment.
Cost sensitive consumer electronics
Consideration: TRL120610F2R70P05Z
The Tian'er TRL series has the lowest price (starting from ¥ 0.28), and meets the accuracy and temperature drift standards, balancing budget and performance.
Careful selection: EAM/ELR series
EAM parameters do not specify surge resistance capability; ELR's public information is missing and there is a high risk of reliability.
3、 Key precautions
Resistance verification: The actual resistance of all models is 2.7 Ω (not 2.4 Ω), and it needs to be confirmed whether it meets the design requirements.
Supply cycle:
The delivery time for the Tian'er TGL series is approximately 6 weeks (October 2024);
The Yineng EGM series is expected to be available for supply in early July.
Compatibility replacement:
In anti surge scenarios, EGM and TGL can be interchangeable, but EGM automotive certification is more suitable for automotive electronics.
TRL is preferred for precision measurement scenarios, and EAM/ELR series with unclear temperature drift should be avoided.
4、 Selection decision tree
It is recommended to prioritize EGM16FT2R70DES (High Wave Surge) or TRL120610F2R70P05Z (High Precision) to avoid the ELR series with unclear information. Before actual procurement, it is necessary to confirm the compatibility of resistance values and delivery time (reference: [Hua Nian Mall])（ https://www.hnstshop.com ））.
