DC Current Sensor -50A to +50A - 5V Logic
The Pololu 5V Current Sensor is an essential component for precise high-current monitoring in electronics. Built on Allegro’s ACS72981LLRATR-050B5, this Hall effect-based sensor is engineered for bidirectional currents ranging from -50A to +50A. It boasts a 250 kHz bandwidth and a swift response time of under 2 µs, ensuring real-time, accurate readings. With an internal resistance of just 0.2 mΩ, the sensor minimizes power dissipation and heat, making it perfect for demanding applications.
Designed for 5V operation, this sensor features electrical isolation, enhancing safety and flexibility in circuit design. Its integrated temperature compensation ensures consistent performance across a wide range of temperatures. Clearly marked connections and current flow directions simplify setup, while the “5V B05” marking aids in quick identification. Ideal for power supplies, motor controls, and battery management, this sensor is a reliable choice for high-performance current monitoring.
Quick Spec
- Typical Operating Voltage: 5V
- Current Sense: 40 mV/A
- Logic Voltage Range: 4.5 ~ 5.5V
- Supply Current: 14mA
- Version: -50A to +150A (bidirectional 100A), 5V
- Current Sensor: Allegro ACS72981LLRATR-050B5
- Dimensions: 17.78 x 20.32mm
- Weight: 3g
Dimensions

Pinout

Schematic

Resources
Shipping List
- 1 x DC Current Sensor -50A to +50A - 5V Logic
DC Current Sensor -50A to +50A - 5V Logic
- Brand: Pololu Electronics
- Product Code: 5251
- Weight: 0.003kg
- Product Status : Active
Stock
Warehouse | Stock Status | Location |
---|---|---|
Centurion | In Stock | D79 |
Stellenbosch | New Product Arriving Soon |
We ship free of charge between branches to complete your order.
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R185.00 (Inc Tax: R212.75)
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