High Precision 2512 SMD Current Sense Resistor for PCB Current Measurement
● Power: 1W~3W
● Resistance value: 1mR~500mR
● Accuracy: ± 0.5% ± 1% ± 5% ● Temperature coefficient (TCR): ≤± 50ppm, ± 75ppm
● Meet ROHS requirements and halogen-free requirements
Description
Overview
SMD Current Sense Resistors are precision low resistance shunt components designed for accurate current measurement in DC and AC circuits. Featuring metal alloy construction, low TCR performance, tight tolerance, and stable resistance characteristics, they provide reliable current sensing for modern electronic systems.
Designed in a compact 2512 package, these SMD shunt resistors offer low inductance, excellent thermal stability, and high reliability for space-constrained PCB applications. They are widely used in power supplies, battery management systems (BMS), motor control boards, DC-DC converters, and industrial electronics requiring precise current monitoring and efficient power management.
Dimension & Technical Parameters
| Type | Resistance | L (mm) | W (mm) | C (mm) |
|---|---|---|---|---|
| 2512 | 1mΩ ~ 4mΩ | 6.4±0.2 | 3.2±0.2 | 2.0±0.2 |
| 2512 | 5mΩ ~ 500mΩ | 6.4±0.2 | 3.2±0.2 | 0.9±0.2 |
| Rated Power | 1mΩ ≤ R ≤ 100mΩ (1W, 1.5W, 2W, 3W) 100mΩ < R ≤ 500mΩ (1W, 1.5W, 2W) |
| Resistance Range | 1mΩ ~ 500mΩ |
| Max. Rated Current | 1.41A ~ 54.77A |
| Accuracy Class | 0.5%, 1%, 5% |
| T.C.R (ppm/°C) | ±50, ±75 |
| Operating Temperature Range | -50°C ~ +170°C |
Key Features of 2512 SMD Current Sense Resistors
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Compact 2512 package for space-constrained applications
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Metal alloy construction for low TCR and long-term stability
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Low resistance values for high-efficiency current sensing
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Suitable for DC-DC converters, battery packs, motor control, and power supplies
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High thermal stability and low inductance
What Are SMD Current Sense Resistors?
SMD current sense resistors are essential components in modern electronics, especially for accurate current monitoring and power management. These resistors help detect current flow in a circuit by converting current to a small, measurable voltage drop. Our 2512 metal alloy version ensures precise sensing in both DC and AC circuits.
Where Is the 2512 SMD Current Sense Resistor Used?
The 2512 SMD current sense resistor is used in compact power and control circuits where accurate current measurement, thermal stability, and low power loss are required.
1. Power Supplies & DC-DC Converters
Used for current feedback and over-current protection in switching power supplies and DC-DC converters. Low resistance values help reduce power loss while maintaining measurement accuracy.
2. Battery Packs & Power Management Circuits
Applied in battery packs and power management modules to monitor charge and discharge current. The 2512 package supports high current sensing within limited PCB space.
3. Motor Control & Frequency Inverters
Used for load monitoring and fault detection in motor drives and frequency inverter systems. The low inductance metal alloy structure ensures stable sensing in fast-switching environments.
4. Industrial Control Boards
Integrated into industrial control and automation boards where stable current measurement is required over a wide operating temperature range.
5. Power Modules & High-Density PCB Designs
Suitable for compact power modules and high-density PCB layouts that require a balance between accuracy, power handling, and board space.
