Seeing that you are selecting resistors for 1206 size, 2.2 Ω, 1% accuracy, and 1W power, let me help you analyze the differences and applicable scenarios of these models. These models come from different series of the two major manufacturers, Tian'er and Ellon, with the same core parameters but different emphasis on their characteristics:
|Model | Manufacturer/Series | Key Features | Typical Application Scenarios | Price Range|
|EAM16FT2R20DES | Ellon | Standard Performance, Low Cost | Common Consumer Electronics, Basic Circuits | Low|
|ELR16FT2R20DES | Ellon | Standard Performance, Low Cost | Common Consumer Electronics, Basic Circuits | Low|
|TRL120610F2R20P05Z | Tian Er | Strong sulfur resistance | Industrial control, automotive electronics, sulfur-containing environment | Medium high|
|TGL120610F2R20P05Z | Tian'er | Long electrode design, resistant to thermal stress | High reliability application, temperature cycling environment | Medium high|
|TSL120610F2R20P05Z | Tian'er | Strong surge resistance | Power circuit, surge protection | Medium high|
|EGM16FT2R20DES | Ellon | Low temperature drift, high precision | Precision instruments, measuring equipment | Medium high|
Here are detailed comparison and selection suggestions:
Ellon Conventional Metal Film Resistors (Basic Series):
EAM16FT2R20DES: Belongs to Ellon's standard thick film resistor series. Provide basic performance and reliability, suitable for most general applications. The cost is usually the lowest.
ELR16FT2R20DES: also belongs to Ellon's standard thick film resistor series. The performance is very similar to EAM, with slight differences in some minor specifications such as end materials or coatings, but the core electrical performance is consistent. The cost is also relatively low.
Summary: These two are the most economical choices, suitable for general electronic devices that are cost sensitive, have mild environmental conditions, and do not have special reliability requirements, such as consumer electronics products, ordinary power supplies, basic control boards, etc.
Tian Er Metal Film Resistance Series:
TRL120610F2R20P05Z: belongs to the TRL series of Tian'er. The main feature of this series is its excellent resistance to sulfurization. In sulfur-containing environments (such as certain industrial areas, near rubber factories, and near sulfur-containing sealing materials), the silver electrode of ordinary resistors is prone to react with sulfur to generate non-conductive silver sulfide, leading to resistor failure. The TRL series solves this problem through special terminal electrode design and materials.
TGL120610F2R20P05Z: belongs to the TGL series of Tian'er. The main feature of this series is the long electrode design, which provides higher resistance to thermal mechanical stress. In applications with severe temperature cycling or high mechanical stress, such as automotive electronics and high reliability industrial equipment, it can reduce the risk of solder joint cracking caused by different thermal expansion coefficients of PCBs and components, and improve long-term reliability.
TSL120610F2R20P05Z: Belongs to the TSL series of Tian'er. This series is designed to withstand high surge currents. It can withstand pulse energy much higher than its rated power in a short period of time (such as startup surge of switching power supply, lightning induced surge, inductive load switching), without being easily damaged. Its pulse load capacity is much higher than that of ordinary thick film resistors.
Summary: These three Tian'er series provide specific reliability beyond the basic series:
TRL: Choose it if applied in sulfur-containing environments (industrial control, certain outdoor equipment, non engine areas in car cabins).
TGL: Choose it if the application has extremely high requirements for thermal cycle reliability (near the engine compartment of automobiles, industrial equipment with high vibration/temperature changes).
TSL: Choose it if there is a risk of high surge current in the circuit (power input/output filtering, motor drive, relay coil, LED drive, lines near switches or connectors).
Ellon metal film resistor:
EGM16FT2R20DES: Belongs to Ellon's thin film resistor series. Thin film resistor technology is different from thick film technology, usually having lower temperature coefficient, better long-term stability, lower noise, and higher accuracy. Although the nominal accuracy is 1%, the actual parameter drift of thin film resistors is usually better than thick film resistors of the same accuracy.
Summary: This is the highest performing option, especially for temperature drift and stability, suitable for measurement circuits, precision amplifiers, reference voltage sources, filters, and other applications that require high precision and stability. But the cost is usually higher than thick film resistors.
Suggestion for selection:
Pursuing the lowest cost and universal application: Choose EAM16FT2R20DES or ELR16FT2R20DES. The difference between the two is minimal, let's see which supply is better or the price is lower.
Working in a sulfur-containing environment: TRL120610F2R20P05Z must be selected. Otherwise, the resistor may fail early due to vulcanization.
There is a risk of high surge current: it is strongly recommended to choose TSL120610F2R20P05Z. Ordinary resistors are prone to damage under repeated surge impacts.
High reliability requirements+harsh temperature cycling environment: TGL120610F2R20P05Z is preferred, especially in automotive or harsh industrial environments.
High precision, low temperature drift, and high stability are required: choose EGM16FT2R20DES (thin film resistor). This is crucial for precision analog circuits.
No special requirements, but we hope for brand consistency or convenient supply channels: If other resistors in the project mainly use Tian Er, then choose Tian Er's TRL/TGL/TSL (choose one based on the closest demand). If Ellon is mainly used, choose between EAM/ELR (metal film) or EGM (metal film).
Important reminder:
Power derating: 1W is the typical maximum power of the 1206 package at an ambient temperature of 70 ° C. Power derating must be considered in practical applications! If the ambient temperature is higher or the heat dissipation conditions are poor, the resistor will overheat, leading to shortened lifespan or failure. Be sure to refer to the power derating curve in the data manual for the specific model. In high-temperature environments, it may be necessary to choose larger packaging or parallel resistors.
Heat dissipation design: Ensure that the PCB design has a good heat dissipation path (such as connecting to the copper foil area).
Data manual: Before final selection, be sure to consult the official data manual of the corresponding model to confirm whether all detailed parameters (such as maximum operating voltage, temperature coefficient, insulation voltage, terminal material, dimensional tolerance, certification, etc.) meet your specific application requirements. The model suffix sometimes contains important information such as end material and packaging method.
Supply and price: The supply situation and price differences of different series and brands may be significant, which is also an important factor to consider in actual selection.
Simply summarize your chosen path:
Is there sulfur in the environment? Yes>TRL
Is there a surge in the circuit? Yes>TSL
Severe temperature cycling/extremely high reliability requirements? Yes>TGL
Do you need high-precision/low-temperature float? Yes>EGM
None of the above are EAM... or ELR... (choose cheaper).
I hope these analyses can help you make the most suitable choice! If the circuit environment is special or the reliability requirements are extremely high, it is recommended to prioritize the special series of Tian'er or Ellon's thin film resistors.