1206 3.3R 1W 1% metal film surface mount resistor model detailed explanation and recommendation

1206 3.3R 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).
3.3R resistance value: indicates a resistance value of 3.3 ohms (3.3 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.
2、 Recommended model comparison
3、 Selection suggestions
Preferred model (1206 package)
TRL120610F3R30P05Z：
Advantages: Low temperature coefficient (± 50ppm/℃), high accuracy, suitable for precision circuits such as medical and communication.
Attention: The power consumption should be reduced to below 0.7W to avoid failure in high-temperature environments.
TGL120610F3R30P05Z：
Advantages: Surge resistant design (100000 times surge life), suitable for high reliability scenarios such as photovoltaics and energy storage.
Attention: The usage should be reduced to below 0.7W.
TSL120610F3R30P05Z：
Advantages: Low cost, suitable for scenarios such as consumer electronics or power management that do not require high precision.
Attention: The temperature coefficient is relatively high (± 50ppm/℃), and environmental adaptability needs to be evaluated.
Alternative model (1608 package)
EGM16FT3R30DES：
Advantages: Passed AECQ200 automotive certification, with a low temperature coefficient (± 50ppm/℃), suitable for automotive electronics or industrial control.
Attention: The 1206 package needs to be downgraded to below 0.7W for use.
EAM16FT3R30DES：
Advantages: Resistant to sulfide corrosion, suitable for sulfur-containing or humid environments (such as automotive ECU, mining equipment).
Attention: The usage should be reduced to below 0.7W.
ELR16FT3R30DES：
Advantage: The parameters are not clear, but may be similar to the EAM/EGM series.
Attention: Missing parameters, it is recommended to verify and select.
Not recommended model
None: All models have certain application scenarios, but need to be selected according to specific needs.
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 0.7W for use.
Temperature coefficient:
Priority should be given to selecting ± 50ppm/℃ models (such as TRL, TGL, EGM series) in precision circuits.
The consumer electronics scene can accept ± 100ppm/℃ models (such as TSL series).
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:
TRL120610F3R30P05Z: Preferred for high-precision scenarios, requiring a derating below 0.7W for use.
TGL120610F3R30P05Z: The preferred anti surge scenario requires a derating below 0.7W for use.
EGM16FT3R30DES: Preferred for automotive electronics or industrial control fields, requiring a derating below 0.7W for use.
alternative:
TSL120610F3R30P05Z: Preferred for cost sensitive scenarios, temperature coefficient impact needs to be evaluated.
EAM16FT3R30DES: Preferred for sulfur-containing or humid and hot environments, and should be rated below 0.7W for use.
Careful selection:
ELR16FT3R30DES: Missing parameters, need to be verified before selection.