400m Ohm Current Sensor Resistor 0.75W High Accuracy Resistor For Precision Current Measurement
Price:
Negotiable
MOQ:
5000
Delivery Time:
3-5 work days
Brand:
Walter
Product Description
0805 Size 0.4Ω (400m Ohm) 0.75W 1% Tolerance Current Sensing Resistor for Precision Current Measurement
In modern electronics, precise current measurement and control are essential for applications ranging from server power management to electric vehicle battery monitoring. The STE00805MW75R400F current sensing resistor delivers precision, power handling, and advanced material science for high-reliability systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | STE0805MW75R400F |
| Resistance Value | 0.4Ω (400mΩ) |
| Tolerance | ±1% |
| Power Rating | 0.75W |
| Package Size | 0805 (1.6mm * 0.8mm) |
| Temperature Coefficient (TCR) | ±50 ppm/°C |
| Resistance Material | Manganese Copper (MnCu) alloy |
| Operating Temperature | -55°C to +125°C |
Current Sensing Resistor Functionality
Placed in series with a load, this resistor converts current flow into a measurable voltage drop (V = I * R). Unlike standard resistors, the STE00805MW75R400F is engineered for low resistance values and minimal temperature drift, ensuring accurate current measurement.
Key Specifications Explained
- 0805 Package: Compact 2.0mm * 1.25mm SMT footprint balances power handling and board space efficiency
- 0.4Ω Resistance: Optimized for measurable voltage signals without excessive power loss
- 0.75W Power Rating: Handles up to 1.36A continuously for power-hungry applications
- 1% Tolerance: Ensures precision current measurement with minimal calibration requirements
Advanced Material and Construction
MnCu Alloy: Manganese-Copper resistive element provides extremely low Temperature Coefficient of Resistance (TCR) for stable performance across temperature ranges.
Low Inductance Design: Minimizes signal distortion in high-frequency applications like SMPS and motor control.
High Precision: Manufacturing process ensures low thermal EMF for accurate low-current measurements.
Applications
- Power supply overcurrent protection and load monitoring
- Battery charge/discharge current monitoring
- Automotive and industrial motor control systems
- Current feedback in DC-DC converters and voltage regulators
This product is RoHS and REACH compliant, manufactured with lead-free materials to meet global environmental standards.
Conclusion
The STE00805MW75R400F current sensing resistor delivers exceptional accuracy, stability, and reliability. Its optimized 0.4Ω value, 0.75W power handling, and advanced MnCu construction make it ideal for precision current measurement in demanding applications.
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Company
Shenzhen Shun Hai Technology Co., Ltd.
Location
Floor 7, Block B, Building 9, Baoneng Science and Technology Park, Qingxiang Road, Longhua New District, Shenzhen
Contact Person
jimmy