1206 2.7R 1W high-power resistor SMD type selection parameters
Date：2025-06-27
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1206 2.7R 1W 1% metal film surface mount resistor model detailed explanation and recommendation
1、 Core parameter analysis
Packaging and Power
1206 package: The size is 3.2mm × 1.6mm, and the rated power is usually 1W (it needs to be downgraded for use, and it is recommended that the actual power be ≤ 0.7W).
2.7R resistance: indicates a resistance of 2.7 ohms (2.7 Ω).
1% accuracy: error range ± 1%, suitable for circuits with high requirements for resistance accuracy.
Metal film material: characterized by low temperature coefficient, high stability, and excellent high-frequency characteristics.
Key Features
Temperature stability: The resistance of metal film resistors changes very little with temperature, making them suitable for precision analog circuits.
High frequency performance: low parasitic inductance and capacitance, suitable for RF or high-speed digital circuits.
Voltage resistance: The maximum operating voltage of the 1206 package is usually 200V, which can meet most application scenarios.
2、 Recommended model comparison
Model Package Rated Power Accuracy Temperature Coefficient Material
TRL120610F2R70P05Z 1206 1W 1% ± 50ppm/℃ metal film
TSL120610F2R70P05Z 1206 1W 1% ± 50ppm/℃ metal film
EGM16FT2R70DES 1205 1W 1% ± 50ppm/℃ metal film
ELR16FT2R70DES 1206 0.5W 1% ≤± 50ppm/℃ metal film
EAM16FT2R70DES 1206 0.5W 1% ≤± 50ppm/℃ metal film
TGL120610F2R70P05Z 1206- Metal Film
3、 Selection suggestions
Preferred model (1206 package)
TRL120610F2R70P05Z：
Advantages: Low temperature coefficient (± 50ppm/℃), high accuracy, suitable for general precision circuits.
Attention: The power consumption should be reduced to below 0.7W to avoid failure in high-temperature environments.
TSL120610F2R70P05Z：
Advantages: Rated power of 1W, low temperature coefficient (± 50ppm/℃), suitable for high-frequency or high-power scenarios.
Attention: It is necessary to verify whether the actual power under the 2.7R resistance meets the requirements.
Alternative model (1608 package)
EGM16FT2R70DES：
Advantages: Low temperature coefficient (± 50ppm/℃), suitable for industrial control.
Attention: The 1206 package needs to be downgraded to below 1W for use.
ELR16FT2R70DES/EAM16FT2R70DES：
Advantage: Low cost.
Attention: Metal film resistance has high stability and low temperature coefficient, and is only suitable for scenarios with high stability requirements, and strict derating is required.
Not recommended model
TGL120610F2R70P05Z: Missing parameter, may be non-metallic film or varistor, not applicable to this requirement.
4、 Key precautions
Power derating:
When the 1206 package model operates in high temperature environments for a long time, it is recommended to reduce the rating to below 0.7W.
The 1206 package model needs to be strictly downgraded to below 1W for use.
Temperature coefficient:
Priority should be given to selecting ± 50ppm/℃ models (such as TRL, TSL, EGM series) in precision circuits.
The temperature coefficient of metal resistors (such as ELR and EAM series) is relatively low (≥ ± 100ppm/℃), and environmental adaptability needs to be evaluated.
Certification requirements:
Certification such as AECQ200 (e.g. EGM series) is required for automotive electronics or industrial fields.
Alternative solution:
If the 1206 package model cannot meet the power requirements, multiple resistors can be connected in parallel or a higher power package (such as 2512) can be selected.
5、 Summary
Priority recommendation:
TRL120610F2R70P05Z: Universal selection, balancing performance and cost, requiring derating to be used below 1W.
TSL120610F2R70P05Z: Preferred for high-frequency or high-power scenarios, actual power at 2.7R resistance needs to be verified.
EGM16FT2R70DES: Preferred for automotive electronics or industrial control fields, requiring a derating of less than 1W for use.
alternative:
ELR16FT2R70DES/EAM16FT2R70DES: Low cost solution, only suitable for scenarios with low stability requirements, requiring strict derating.
Avoid choosing:
Parameter missing models (such as TGL series) and thick film resistors (such as ELR, EAM series) do not meet high-precision requirements due to stability or material limitations.
