Summary of Model Parameters for 1206 0.2R (200mR) Surface Mount Resistors

The parameter summary of this 1206 package and 0.2 Ω (200m Ω) metal film resistor is very clear! I organized the information into a table and added some explanations:
 
 
 
Summary Table of Resistance Parameters for 1206 0.2 Ω (200m Ω)
 
|Model | Packaging | Resistance | Power | Accuracy | Temperature Drift Coefficient | Brand | Material/Features|
|TRL1206X2R200P05Z | 1206 | 0.2 Ω | 0.25W | 1% | ± 50ppm/° C | Day 2 | Standard metal film|
|STE1206M1W0R200F | 1206 | 0.2 Ω | 1W | 1% | ± 50ppm/° C | Huade | High power type|
|EMA16F0W5R200KEG | 1206 | 0.2 Ω | 1W | 1% | ± 50ppm/° C | Ellon | Alloy Material|
 
|EHP16FUR200JEL | 1206 | 0.2 Ω | 0.5W | 1% | ± 600ppm/° C | Ellon | Thick film power up|
 
|EHP16JUR200JEL | 1206 | 0.2 Ω | 0.5W | 5% | ± 600ppm/° C | Ellon | Thick film power up|
 
Key parameter description
 
1. Resistance: All values are 0.2 Ω (200m Ω). R200 or 0R200 is commonly used in the model.
2. Power Rating:
Standard power range: The standard power for common 1206 packaged resistors is 0.25W (such as the first model from Tian'er).
Power up design: The models of Huade (1W) and Ellon (0.5W, 1W) are clearly marked with power higher than the standard 1206. This is usually achieved through special materials (such as alloys, thick film formulations), structures, or heat dissipation designs.
Special attention: Whether the nominal high power (especially 1W) can be continuously achieved in practical applications strongly depends on the PCB's heat dissipation design (copper foil area, heat dissipation vias, ambient temperature, etc.). Be sure to refer to the derating curve in the device specification sheet.
3. Tolerance: Mainly 1% (J-level), Ellon has a 5% tolerance (J-level suffix may represent 5%).
4. TCR Temperature Coefficient of Resistance:
± 50ppm/° C: This is a relatively good temperature drift performance, commonly seen in precision metal film or alloy resistors (Tian'er, Huade, Ellon alloy models).
± 600ppm/° C: This is a relatively high temperature drift coefficient (Ellon thick film power up version). This means that the resistance value varies greatly with temperature and is not suitable for situations that require high resistance stability (such as precision sampling), but the cost is usually lower.
5. Material/Feature:
 
Metal film: The standard version of the Tian'er brand (presumably, the model prefix 'TRL' is commonly found in metal films).
 
Alloy: Ellon's EMA16F0W5R200KEG is clearly marked as an alloy material. Alloy resistors typically have extremely low parasitic inductance, good pulse load capacity, more stable TCR, and higher power density, making them ideal for applications such as current sampling and power path. Its 1W power is more reliable in the 1206 package (compared to thick film boost power).
Thick film power up: Ellon's EHP16 series is clearly labeled as thick film power up. Improve power carrying capacity by optimizing thick film paste and process. But the TCR (± 600ppm/° C) is significantly higher than the alloy version.
High power/liter of power: Huade's STE1206M1W0R200F achieves a power of 1W, but its material is not clearly specified (possibly a metal film or thick film for the high-power design), but TCR (± 50ppm/° C) performs excellently.
 
Selection suggestions
 
1. Precision sampling/low TCR requirements:
Preferred Ellon alloy version (EMA16F0W5R200KEG): low TCR (± 50ppm/° C), alloy material with low inductance, 1W power (attention should be paid to heat dissipation).
 
The second choice is either Tian Er (TRL1206X2R200P05Z) or Hua De (STE1206M1W0R200F): TCR ± 50ppm/° C. Tian Er has a lower power (0.25W) and Hua De has a higher power (1W), but the material is not specified.
 
2. General purpose/power demand priority (cost sensitive):
Ellon thick film power up version (EHP16FUR200JEL or EHP16JUR200JEL): Provides 0.5W power and usually has a lower cost. But TCR (± 600ppm/° C) is poor, and the accuracy can be selected as 1% or 5%.
STE1206M1W0R200F: If it can meet the TCR requirements and the cost is acceptable, its 1W power and ± 50ppm/° C TCR are a good balance point.
 
3. Limited space and low power requirements: