3920 SMD Open-Type Current Sense Resistor
- Rated Power: Up to 5W
- Low resistance values: 0.2mΩ ~ 5mΩ
- Excellent stability and heat dissipation
- Solderable SMD construction, RoHS compliant
Description
Overview
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
3920 SMD package with open-type construction
Low resistance values for high-current sensing
Stable temperature coefficient (TCR)
Efficient heat dissipation and power handling
Compatible with standard SMT assembly processes
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 |
Applications of SMD Current Sense Resistors
Power Control Circuits – Accurate current sensing for switching power supplies and control modules.
Energy Meters and Power Monitoring Systems – Stable and precise current measurement for smart metering.
Industrial Automation Equipment – Used in PLCs, servo drives, and process control systems for reliable current feedback.
Inverter and Converter Modules – Ensures current balancing and overload protection in AC/DC conversion systems.
DC Power Distribution and Battery Management Systems (Non-automotive) – Supports current measurement and protection in industrial DC networks and backup systems.
For more technical standards on current sensing resistors, refer to the
IEEE official website.
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