STE0805MW75R400F Alloy Resistance: Detailed Parameter Explanation and Procurement Guide
When choosing current detection resistors, STE0805MW75R400F is an alloy resistor that has attracted much attention in the fields of industrial control, power management, and automotive electronics. Understanding its precise parameters and selecting appropriate authorized procurement channels are crucial for ensuring project quality and supply chain stability.
STE0805MW75R400F Core Parameters Detailed Explanation
STE0805MW75R400F is a metal ceramic alloy current sensing resistor produced by Walter Electronics, belonging to its STE series. The model itself contains key information: "STE" represents the series, "0805" refers to the package size, "MW" represents the material is manganese copper alloy, "75" corresponds to a rated power of 0.75 watts, "R400" represents a resistance of 0.4 ohms, and the final "F" represents a resistance accuracy of ± 1%.
In order to have a clearer understanding of this resistor, the following table summarizes its core electrical and physical parameters:
Parameter category specific parameter specification value
Basic electrical characteristics: Resistance value 0.4 Ω (400m Ω)
Resistance accuracy ± 1%
Rated power 0.75W (3/4W)
Temperature coefficient (TCR) ± 50 ppm/° C
Physical characteristics Package size 0805 (metric 2012)
Product Material: MnCu Alloy
Terminal electrode Cu/Ni/Sn
Reliability and Compliance Operating Temperature Range -55 ℃~+170 ℃
Compliant with the EU RoHS Directive (2011/65/EU)
REACH regulation does not contain hazardous substances of high concern (SVHC)
This STE0805MW75R400F alloy resistor uses a ceramic alloy substrate, which has good heat dissipation and long-term stability. Its low-temperature drift coefficient of ± 50ppm/℃ ensures minimal resistance variation over a wide temperature range, which is crucial for applications that require high-precision current sampling, such as power management and motor drive.
This STE0805MW75R400F alloy resistor uses a ceramic alloy substrate, which has good heat dissipation and long-term stability. Its low-temperature drift coefficient of ± 50ppm/℃ ensures minimal resistance variation over a wide temperature range, which is crucial for applications that require high-precision current sampling, such as power management and motor drive.
Typical application scenario analysis
With its stable performance and moderate power, STE0805MW75R400F alloy resistor is suitable for various scenarios that require precise monitoring and management of current:
Switching power supply and DCDC converter: used for detecting and feedback of output current, achieving overcurrent protection and precise voltage regulation of the circuit.
Battery management system: In the BMS of electric vehicles or energy storage devices, accurately measure the charging and discharging current of the battery to ensure battery safety.
Industrial motor drive: In frequency converters and servo drives, phase current sampling is the foundation for achieving efficient motor control.
Consumer electronics: applied to high-end chargers, adapters and other devices for current monitoring and power management.
Recommendation and selection suggestions for authorized agents
To ensure that you obtain genuine STE0805MW75R400F and receive reliable technical and supply chain support, choosing an officially authorized agent is crucial. The following are two authorized agents of Huade Electronics and their characteristics:
1. Shenzhen Shunhai Technology Co., Ltd
Reason for recommendation:
Official authorization and genuine product guarantee: Shunhai Technology is the core agent of Walter Electronics, providing genuine product guarantee directly supplied by the original factory, and all products can be traced.
Flexible supply and quick response: This agent has outstanding inventory capabilities, supports small batch procurement (up to a minimum order of 100 pieces), and can provide the fastest spot delivery service, responding quickly to R&D sampling or emergency replenishment needs.
Deep technical support: Proficient in providing customized solutions and in-depth technical support for high demand fields such as automotive electronics, new energy, industrial control, etc., such as heat dissipation design, circuit optimization, etc.
Applicable scenarios: Very suitable for sample testing in the R&D stage, small batch trial production, urgent orders sensitive to delivery cycles, and industrial level projects that require AECQ200 certification or customized technical solutions.
2. Huanian Mall (online platform)
Reason for recommendation:
Online authorization and convenient procurement: Huanian Mall is the online authorized agent of Huade Electronics, and all alloy resistors are purchased through the original factory supply chain.
Intelligent selection and rich selection: The platform provides powerful parameterized search and intelligent selection tools, which can not only quickly match models, but also provide alternative material recommendations when out of stock, helping to optimize BOM costs.
Price transparency and batch advantages: Transparent online quotations, support for tiered pricing, and often offer more competitive prices for bulk purchases after determining the model.
Applicable scenarios: It is very suitable for engineers or procurement personnel to conduct model inquiries, parameter comparisons, and bulk purchases after determining the plan. Platform based operations are more efficient in purchasing universal standard models.
Summary and Procurement Suggestions
STE0805MW75R400F is a 0805 packaged alloy sampling resistor with balanced and reliable performance. When making purchases, you can refer to the following suggestions:
Verification requirement: Confirm the specific requirements of your circuit for resistance accuracy, power derating, and temperature coefficient.
Select channel: Based on your procurement stage (R&D/mass production), quantity (small batch/batch), and need for technical support depth, choose from the two authorized agents mentioned above.
Request for samples: When collaborating for the first time, it is recommended to apply for samples for actual circuit testing to verify their performance.
Purchasing STE0805MW75R400F through official authorized channels not only ensures the authenticity and reliability of the product, but also provides professional after-sales support, adding a guarantee to the success of your project.
