SMD Current Sense Resistor for High Precision Current Measurement in PCB Applications
- Rated Power: Up to 5W
- Low resistance values: 0.2mΩ ~ 5mΩ
- Excellent stability and heat dissipation
- Solderable SMD construction, RoHS compliant
Description
SMD Current Sense Resistor for Precision PCB Current Measurement
High precision SMD current sense resistor for PCB current measurement. Low resistance, high stability, and compact design. Ideal for BMS, power supply, and industrial electronics.The 3920 SMD Open-Type Current Sense Resistor is designed for accurate current measurement in high-current power circuits.
As an SMD current sense resistor, it measures current by detecting the voltage drop across a precisely controlled low resistance, enabling reliable monitoring and control.
The open-type structure improves heat dissipation through natural convection, reducing thermal stress during continuous operation. This SMD current sense resistor delivers stable electrical performance and long-term reliability in demanding industrial environments.
Key Features of the SMD Current Sense Resistor
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3920 SMD package with open-type construction
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Low resistance values for high-current sensing
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Stable temperature coefficient (TCR)
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Efficient heat dissipation and power handling
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Compatible with standard SMT assembly processes
- Key Features:
– Low resistance values for precise current sensing
– High accuracy and low temperature coefficient
– Compact SMD package for PCB space-saving
– Stable performance under continuous high-current load
– Non-inductive design for high-frequency circuits
Technical Specifications – Chip Current Sense Shunt 3920
| Power (W) | Material Size | B (mm) | W (mm) | A (mm) | C (mm) | H (mm) | D1 (mm) | D2 (mm) | Resistance Value (mΩ) |
|---|---|---|---|---|---|---|---|---|---|
| 3 | M2512 | 3.0±0.3 | 6.3±0.2 | 1.2±0.2 | 3.1±0.3 | 0.5±0.1 | 1.5 | 1.5 | 0.3 |
| 0.88 | |||||||||
| 0.5 | |||||||||
| 5 | M3920 | 4.5±0.3 | 10±0.2 | 2.2±0.2 | 5.1±0.4 | 0.5±0.1 | 1.5 | 1.5 | 0.2 |
| 1.37 | |||||||||
| 0.3 | |||||||||
| 0.83 | |||||||||
| 7 | M5930 | 5.0±0.3 | 15±0.3 | 4.2±0.3 | 7.6±0.4 | 0.5±0.1 | 1.5 | 1.5 | 0.2 |
| 0.75 | |||||||||
| 0.4 | |||||||||
| 0.6 |
Common Challenges in Industrial Current Sensing
– Inaccurate current measurement under high load
– Resistance drift due to temperature fluctuations
– Limited PCB space for high-power components
– Overheating in continuous operation or compact designs
How Our SMD Current Sense Resistor Solves These Challenges
– Ultra-low resistance ensures precise current sampling
– Stable alloy material reduces temperature drift
– Compact SMD design saves PCB space
– Open-air and non-inductive structure improves heat dissipation
Applications of SMD Current Sense Resistors
Typical Industrial Applications:
– Battery management systems (BMS)
– Switching power supplies and DC-DC converters
– Industrial automation and control circuits
– Variable frequency drives (VFDs)
– Renewable energy inverters
For more technical standards on current sensing resistors, refer to the
IEEE official website.
Explore more of our SMD Current Sense Resistors
We offer custom SMD current sense resistors tailored to your resistance, power rating, and package size requirements. Contact us for engineering support, fast sample delivery, and bulk orders.
