Full Analysis of Model Parameters for Huade 0805 Alloy Resistance Series
Walter 0805 alloy resistor, as a high-precision current sensing element, plays a key role in modern electronic circuits. The following provides a comprehensive analysis of the model parameters and application characteristics of this series.
Series Overview and Model Naming Rules
Walter Electronics' 0805 alloy resistors mainly include two categories: STE series and MSTC series, both of which use 0805 packaging size (about 2.0mm × 1.25mm), but there are slight differences in structure and performance.
Analysis of Model Naming Rules:
Series code: STE represents alloy resistors with short electrodes and electrodes on both sides; MSTC stands for short electrode, non-conductive alloy resistance
Size identification: 0805 indicates packaging size
Material code: M represents MnCu alloy, A represents Alloy, S represents Special
Power identification: W75 represents 0.75W, W50 represents 0.5W, 1W0 represents 1.0W
Resistance identification: R005 represents 0.005 Ω (5m Ω), R010 represents 0.01 Ω (10m Ω), and so on
Accuracy code: F represents ± 1%, D represents ± 0.5%, G represents ± 2%
Detailed parameter comparison table
The following table lists the key parameters of the main series of Huade 0805 alloy resistors:
STE0805MW75R005FS 0805 0.005R/5mΩ 0.75W 1%
STE0805MW75R004FS 0805 0.004R/4mΩ 0.75W 1%
STE0805MW75R003FS 0805 0.003R/3mΩ 0.75W 1%
STE0805MW75R006FS 0805 0.006R/6mΩ 0.75W 1%
STE0805MW75R007FS 0805 0.007R/7mΩ 0.75W 1%
STE0805MW75R008F 0805 0.008R/8mΩ 0.75W 1%
STE0805MW75R009F 0805 0.009R/9mΩ 0.75W 1%
STE0805MW75R010F 0805 0.01R/10mΩ 0.75W 1%
STE0805MW75R012F 0805 0.012R/12mΩ 0.75W 1%
STE0805MW75R013F 0805 0.013R/13mΩ 0.75W 1%
STE0805MW75R015F 0805 0.015R/15mΩ 0.75W 1%
STE0805MW75R017F 0805 0.017R/17mΩ 0.75W 1%
STE0805MW75R018F 0805 0.018R/18mΩ 0.75W 1%
STE0805MW75R020F 0805 0.02R/20mΩ 0.75W 1%
STE0805MW75R020F 0805 0.023R/23mΩ 0.75W 1%
STE0805MW75R024F 0805 0.024R/24mΩ 0.75W 1%
STE0805MW75R025F 0805 0.025R/25mΩ 0.75W 1%
STE0805MW75R027F 0805 0.027R/27mΩ 0.75W 1%
STE0805MW75R028F 0805 0.028R/28mΩ 0.75W 1%
STE0805MW75R030F 0805 0.03R/30mΩ 0.75W 1%
STE0805MW75R033F 0805 0.033R/33mΩ 0.75W 1%
STE0805MW75R035F 0805 0.035R/35mΩ 0.75W 1%
STE0805MW75R040F 0805 0.04R/40mΩ 0.75W 1%
STE0805MW75R045F 0805 0.045R/45mΩ 0.75W 1%
STE0805MW75R050F 0805 0.05R/50mΩ 0.75W 1%
STE0805MW75R056F 0805 0.056R/56mΩ 0.75W 1%
STE0805MW75R065F 0805 0.065R/65mΩ 0.75W 1%
STE0805MW75R070F 0805 0.07R/70mΩ 0.75W 1%
STE0805MW75R068F 0805 0.068R/68mΩ 0.75W 1%
STE0805MW75R075F 0805 0.075R/75mΩ 0.75W 1%
STE0805MW75R080F 0805 0.08R/80mΩ 0.75W 1%
STE0805MW75R100F 0805 0.1R/100mΩ 0.75W 1%
STE0805MW75R120F 0805 0.12R/120mΩ 0.75W 1%
STE0805MW75R130F 0805 0.13R/130mΩ 0.75W 1%
STE0805MW75R150F 0805 0.15R/150mΩ 0.75W 1%
STE0805MW75R130F 0805 0.13R/130mΩ 0.75W 1%
STE0805MW75R180F 0805 0.18R/180mΩ 0.75W 1%
STE0805MW75R200F 0805 0.2R/200mΩ 0.75W 1%
STE0805MW75R220F 0805 0.22R/220mΩ 0.75W 1%
STE0805MW75R230F 0805 0.23R/230mΩ 0.75W 1%
STE0805MW75R240F 0805 0.24R/240mΩ 0.75W 1%
STE0805MW75R250F 0805 0.25R/250mΩ 0.75W 1%
STE0805MW75R280F 0805 0.28R/280mΩ 0.75W 1%
STE0805MW75R300F 0805 0.3R/300mΩ 0.75W 1%
STE0805MW75R330F 0805 0.33R/330mΩ 0.75W 1%
STE0805MW75R400F 0805 0.4R/400mΩ 0.75W 1%
STE0805MW75R430F 0805 0.43R/430mΩ 0.75W 1%
STE0805MW75R450F 0805 0.45R/450mΩ 0.75W 1%
STE0805MW75R470F 0805 0.47R/470mΩ 0.75W 1%
STE0805MW75R499F 0805 0.499R/499mΩ 0.75W 1%
STE0805MW75R500F 0805 0.5R/500mΩ 0.75W 1%
STE0805CW75R300F 0805 0.3R/300mΩ 0.75W 1%
STE0805CW75R250F 0805 0.25R/250mΩ 0.75W 1%
Detailed characteristics and applications of each series
1. STE0805 series
The STE0805 series is the most widely used 0805 alloy resistor series by Huade, with high power density and excellent temperature stability.
Typical model:
STE0805MW75R005FS: resistance 0.005 Ω (5m Ω), accuracy ± 1%, power 0.75W, temperature coefficient ± 100ppm/℃
STE0805MW75R025F: resistance 0.025 Ω (25m Ω), accuracy ± 1%, power 0.75W, temperature coefficient ± 50ppm/℃
STE0805AW75R200F: resistance 0.2 Ω (200m Ω), accuracy ± 1%, power 0.75W, temperature coefficient ± 50ppm/℃
Structural characteristics:
Substrate: Alumina Ceramic
Resistance body: Copper alloy
Terminal electrode: Cu/Ni/Sn structure
Working temperature range: 55 ℃~170 ℃
2. MSTC0805 series
The MSTC series is designed for application scenarios that require smaller size and sufficient power, providing a power capacity of 0.5W in the 0805 package.
Typical model:
MSTC0805MW50R003FLV: resistance 0.003 Ω (3m Ω), accuracy ± 1%, power 0.5W
MSTC0805MW50R005F: resistance 0.005 Ω (5m Ω), accuracy ± 1%, power 0.5W, temperature coefficient ± 75ppm/℃
Resistance range: covering 0.002 Ω 0.02 Ω, suitable for extremely low resistance application scenarios.
3. Other 0805 alloy resistor series
Huade also offers models such as HTE0805M1W0R010F (1W power) to meet application scenarios with different power requirements.
Deep analysis of core parameters
1. Resistance range and accuracy
The resistance range of Huade 0805 alloy resistors is from 1m Ω to 700m Ω, covering the needs of the vast majority of current detection applications. The accuracy is mainly divided into two levels: ± 1% and ± 0.5%, and some models can reach ± 2%.
2. Power characteristics
The rated power of Huade alloy power resistors packaged in 0805 is mainly 0.5W and 0.75W, and some special models can reach up to 1W. In practical applications, it is necessary to consider derating, especially in high temperature environments.
3. Temperature coefficient (TCR)
The temperature coefficient is a key performance indicator of alloy resistance, and the temperature coefficient range of Huade 0805 alloy resistance is between ± 50ppm/℃ and ± 150ppm/℃. Low TCR means that the resistance value changes less with temperature, which is beneficial for improving the accuracy of current detection.
Application scenarios and selection suggestions
1. Applicable fields
Huade 0805 alloy resistors are widely used in:
Power management system: used for current detection of DCDC converters and voltage regulation modules
Battery Management System (BMS): Monitoring Charge and Discharge Current
Motor drive control: three-phase motor phase current detection
Charging equipment: such as PD fast charging, gallium nitride charger, etc
2. Selection Guide
High precision requirement: Select ± 0.5% precision, low-temperature float (± 50ppm/℃) model
High current application: Choose low resistance (such as 1m Ω 5m Ω) models
Space limited scenario: prioritize STE0805 series with higher power density
Cost sensitive applications: MSTC series provides more economical solutions
Technological development trends
With the increasing trend of miniaturization in electronic products, Huade 0805 alloy resistors are developing towards higher power density, lower resistance, and better temperature characteristics. Especially in the fields of fast charging and new energy, the requirements for alloy resistance performance are constantly increasing. Huade Electronics continues to meet market demand through material innovation and process optimization.
The Huade 0805 alloy resistor series provides engineers with a comprehensive current detection solution, with excellent electrical performance and reliable stability. By understanding the characteristics and parameters of each series, designers can choose the most suitable model based on specific application requirements, optimize circuit performance, and improve system reliability.
