Detailed Explanation of Model Parameters and Resistance Values for the Full Series of Huade 0603 Alloy Resistors
WALTER Electronics, as a professional manufacturer of resistor components, plays a key role in electronic circuit design with its 0603 alloy resistor series for its precision current detection capability and excellent temperature stability. This article will provide a detailed introduction to the model parameters, resistance range, and application fields of the Huade 0603 alloy resistor.
1、 Overview of Huade 0603 Alloy Resistance Series
Walter 0603 alloy resistors mainly include STE series and MSTC series, both with dimensions of 1.6mm × 0.8mm (British 0603). Both series use alloy materials as resistors, but their power and resistance ranges are different to meet the needs of different application scenarios.
2、 Detailed explanation of model parameters
1. STE series parameters
The Huade STE series 0603 alloy resistor is the most widely used product line, and its model naming convention is: STE0603 M W50 RXXX X
STE0603: Represents product series and dimensions (0603 package)
M: The material is MnCu alloy, which has a low temperature coefficient and good long-term stability
W50: indicates a rated power of 0.5W (1/2W)
RXXX: represents resistance identification, for example, R005 represents 5m Ω, R050 represents 50m Ω
Last letter: indicates accuracy level, such as F=± 1%, D=± 0.5%
Key technical parameters:
Resistance range: 0.002 Ω (2m Ω) to 0.7 Ω (700m Ω)
Accuracy level: ± 0.5%, ± 1%
Rated power: 0.5W (1/2W)
Temperature coefficient (TCR): ± 50ppm/℃, ± 75ppm/℃
Working temperature range: 55 ℃~+170 ℃
2. MSTC series parameters
The MSTC series is another 0603 alloy resistor from Huade, with slightly lower power processing capability than the STE series, but it has unique advantages in small volume applications.
Key technical parameters:
Resistance range: 0.002 Ω (2m Ω) to 0.05 Ω (50m Ω)
Accuracy level: ± 0.5%, ± 1%
Rated power: 0.33W
Temperature coefficient (TCR): ± 50ppm/℃, ± 75ppm/℃, ± 100ppm/℃, ± 150ppm/℃
Working temperature range: 55 ℃~+155 ℃
3、 Resistance Comparison Table
The following is a comparison table of common resistance parameters for the STE series of Huade 0603 alloy resistors:
STE0603MW50R005F 0603 0.005R/5mΩ 0.5W 1%
STE0603MW50R006F 0603 0.006R/6mΩ 0.5W 1%
STE0603MW50R007F 0603 0.007R/7mΩ 0.5W 1%
STE0603MW50R008F 0603 0.008R/8mΩ 0.5W 1%
STE0603MW50R009F 0603 0.009R/9mΩ 0.5W 1%
STE0603MW50R010F 0603 0.01R/10mΩ 0.5W 1%
STE0603MW50R012F 0603 0.012R/12mΩ 0.5W 1%
STE0603MW50R015F 0603 0.015R/15mΩ 0.5W 1%
STE0603MW50R020F 0603 0.02R/20mΩ 0.5W 1%
STE0603MW50R025F 0603 0.025R/25mΩ 0.5W 1%
STE0603MW50R027F 0603 0.027R/27mΩ 0.5W 1%
STE0603MW50R028F 0603 0.028R/28mΩ 0.5W 1%
STE0603MW50R030F 0603 0.03R/30mΩ 0.5W 1%
STE0603MW50R033F 0603 0.033R/33mΩ 0.5W 1%
STE0603MW50R035F 0603 0.035R/35mΩ 0.5W 1%
STE0603MW50R036F 0603 0.036R/36mΩ 0.5W 1%
STE0603MW50R039F 0603 0.039R/39mΩ 0.5W 1%
STE0603MW50R040F 0603 0.040R/40mΩ 0.5W 1%
STE0603MW50R045F 0603 0.045R/45mΩ 0.5W 1%
STE0603MW50R047F 0603 0.047R/47mΩ 0.5W 1%
STE0603MW50R050F 0603 0.050R/50mΩ 0.5W 1%
STE0603MW50R052F 0603 0.052R/52mΩ 0.5W 1%
STE0603MW50R056F 0603 0.056R/56mΩ 0.5W 1%
STE0603MW50R060F 0603 0.06R/60mΩ 0.5W 1%
STE0603MW50R060F 0603 0.065R/65mΩ 0.5W 1%
STE0603MW50R062F 0603 0.062R/62mΩ 0.5W 1%
STE0603MW50R065F 0603 0.065R/65mΩ 0.5W 1%
STE0603MW50R068F 0603 0.068R/68mΩ 0.5W 1%
STE0603MW50R070F 0603 0.07R/70mΩ 0.5W 1%
STE0603MW50R060F 0603 0.06R/60mΩ 0.5W 1%
STE0603MW50R100F 0603 0.1R/100mΩ 0.5W 1%
4、 Performance characteristics and technological advantages
1. High power density
The power of a regular 0603 thick film resistor is usually only 0.1W, while the Huade 0603 alloy resistor is designed with special alloy materials and ceramic substrates, increasing the power to 0.5W (STE series) and increasing the power density by 5 times.
2. Excellent temperature stability
The temperature coefficient (TCR) of the Huade 0603 alloy resistor is as low as ± 50ppm/℃, much lower than that of ordinary thick film resistors (usually ≥ 200ppm/℃). This means that in temperature changing environments, the resistance value changes very little, ensuring the accuracy of current detection.
3. Precision current detection capability
The resistance of the Huade 0603 alloy resistor can be as low as 2m Ω (0.002 Ω), which minimizes the voltage drop generated by the resistor when current passes through, reduces power loss, and provides sufficient signal voltage for accurate measurement.
4. Material and structural advantages
Alloy material: Made of materials such as manganese copper alloy (MnCu), constantan alloy, or nickel copper alloy, it has a low temperature coefficient of resistance and good long-term stability
Ceramic substrate: Made of alumina ceramic substrate, with a thermal conductivity of 24W/mK, effectively reducing the working temperature rise
Non inductive design: reduces parasitic inductance effects in high-frequency applications, suitable for high-frequency circuits such as switching power supplies
5、 Application Fields
Huade 0603 alloy resistors are widely used in multiple high-end electronic device fields:
1. Automotive electronics: Battery Management System (BMS), Engine Control Unit, Advanced Driver Assistance Systems (ADAS), etc. Its AEC-Q200 standard version can work stably in an environment of 55 ℃ to+170 ℃.
2. Industrial automation: scenarios that require high-precision current feedback, such as PLCs, industrial robots, motor drives, and servo drives.
3. Power management system: fast charging adapter, lithium battery protection board, and DCDC converter to achieve overcurrent protection and power calculation.
4. Communication equipment: Power management modules in 5G base stations, network switches, and routers.
5. Consumer electronics: power management circuits for portable devices such as smartphones, tablets, and laptops.
6、 Selection Guide and Design Considerations
When selecting a suitable Huade 0603 alloy resistor, the following factors should be considered comprehensively:
1. Power derating design: In high-temperature environments, the derating curve should be followed, and it is recommended that the actual working power does not exceed 70-80% of the rated value.
2. Balance between accuracy and temperature coefficient: ± 1% accuracy and ± 75ppm/℃ TCR are sufficient for most applications, and ± 0.5% accuracy and ± 50ppm/℃ TCR models can be considered for high-precision scenarios.
3. PCB layout optimization: It should be kept away from heat sources and magnetic components. Adopting a four wire Kelvin connection method can improve measurement accuracy.
4. Environmental adaptability: Automotive electronic applications should choose automotive grade products that comply with the AEC-Q200 standard.
The Huade 0603 alloy resistor series has become a key component for current sensing in modern electronic devices due to its compact packaging, high power density, low temperature coefficient, and precision current detection capability. Through reasonable selection and application, Huade 0603 alloy resistors can significantly improve the reliability and performance of circuits, meeting the requirements of various harsh application environments.
