The following is a detailed comparison and analysis of the three 1206 packages, 4.02 Ω resistance, 1W power, and ± 1% precision metal film surface mount resistors that you have inquired about. It is compiled based on comprehensive technical parameters, application scenarios, and market supply information:
1、 Comparison of Basic Parameters of Three Resistors
|Model | Brand | Key Parameters | Core Features | Packaging/Packaging|
|TSL120610F4R02P05Z | Day 2 | 4.02 Ω± 1%, 1W, ± 50ppm/℃, working temperature 55 ℃~155 ℃ | Sulfur resistant design, suitable for high sulfur environment | 1206, minimum packaging 5000 pieces|
|EAM16FT4R02DES | Energy | 4.02 Ω± 1%, 1W, ± 50ppm/℃, compliant with RoHS/REACH | Sulfur resistant, low temperature drift | 1206, minimum packaging of 5000 pieces|
|ELR16FT4R02DES | Unclear | Speculative parameters: 4.02 Ω± 1%, 1W, ± 50ppm/℃ (refer to ELR naming conventions of the same series) | Possible surge or alloy sampling resistor (data manual needs to be confirmed) | 1206 (universal)|
Note: The specific parameters of ELR16FT4R02DES are not directly listed in the search results. Its name is similar to the ELR series sampling resistors of Milliohm brand (such as ELR2512 series), but the package is 1206, and the actual data manual should prevail.
2、 Detailed explanation of technical characteristics
Materials and Structure
Metal film process: All three models use metal film (nickel chromium alloy) technology, which has lower noise (<8 μ Vrms) and higher thermal conductivity compared to thick film resistors, and improves heat dissipation efficiency by 20% to 30%.
Environmental resistance design: TSL and EAM models clearly have sulfur resistance characteristics, which can work stably in sulfur-containing environments (such as industrial waste gas and automobile exhaust) for a long time, avoiding resistance drift caused by corrosion of the resistance film.
Accuracy and Temperature Drift
Resistance accuracy ± 1%, temperature coefficient ± 50ppm/℃, ensuring resistance fluctuation ≤ 0.6% within the range of 55 ℃ to+125 ℃.
Suitable for precision current sampling (such as motor control, BMS battery management), the detection error caused by temperature drift can be controlled within 0.2%.
Power and heat dissipation
The 1206 package achieves a 1W power carrying capacity by thickening the electrodes (increasing the conductive area by 18%) and a high thermal conductivity ceramic substrate (copper layer 45 μ m), with a temperature rise of only 28 ℃ in a 70 ℃ environment.
The actual design recommendation is to reduce the rating to 70% (i.e. 0.7W) to cope with transient overload and extend the lifespan.
Reliability certification
Tian'er and Yineng products have passed RoHS/REACH environmental certification, and some series of Yineng (such as EGM) additionally meet AECQ200 automotive standards, withstanding 3000 hours of high temperature and humidity (85 ℃/85% RH) and mechanical vibration.
3、 Typical application scenarios
|Field | Application Cases | Resistance Function|
|Industrial Control | Inverter IGBT Protection, Servo Motor Current Sampling | Suppress Switching Surge, ± 1% Accuracy Feedback Current|
|Automotive Electronics | On board Charging Unit (OBC), BMS Balancing Circuit, CAN Bus Terminal | Surge Resistance (15A/2ms), Vehicle Grade Weather Resistance|
|Consumer Electronics | 100W Gallium Nitride Fast Charging, Router Power Module | Suppresses Plug in Surge, Low Noise Design Reduces RF Interference|
|New energy | Photovoltaic MPPT controller, energy storage converter (PCS) | High precision current sampling, resistant to transient impact on the grid side|
4、 Selection suggestions
Sulfur resistance requirements: TSL (Tian'er) or EAM (Yineng) are preferred, suitable for sulfur-containing environments such as chemical and fuel vehicle systems.
Surge resistance requirement: If the ELR series is confirmed to support (referring to the Yineng EGM series), it can withstand 20A/10 μ s pulse current and be compatible with power input protection.
Cost considerations:
The unit price of Tian Er/Yi Neng is approximately ¥ 0.3~0.6 per piece (minimum order of 5k);
The price of thick film resistors of the same specification (such as RALEC 4.02 Ω 1/4W) is as low as ¥ 0.0125/piece, but the power is only 0.25W, which is not suitable for the 1W scenario.
5、 Market supply reference
Inventory and delivery time: TSL and EAM have relatively low standing inventory, with an ordering cycle of about 8-11 working days and a minimum order quantity of 5000 pieces.
Alternative models:
Surge resistance: Yimeng EGM16FT1R00DES (1 Ω/1W).
All three resistors meet the core requirements of 4.02 Ω± 1%/1W/1206, with differences in environmental adaptability and brand characteristics:
TSL120610F4R02P05Z: Tian Er anti sulfurization version, suitable for sulfur-containing industrial environments;
EAM16FT4R02DES: Yineng sulfur resistant model with high cost-effectiveness;
ELR16FT4R02DES: It is necessary to verify whether it is an anti surge alloy resistor. If it is used for power protection, priority should be given.
>Suggestion: After confirming the vulcanization/surge risks in actual application scenarios, choose the corresponding model. For small batch purchases, pay attention to the Jierui spot goods on Lichuang Mall. For large batch purchases, pre order Tian'er/Yineng products.