• Description

DC Large Current Sensor 0A to +100A - 3.3V Logic

The Pololu 3.3V Large Current Sensor is an essential component for precise high-current monitoring in electronics. Built on Allegro’s ACS72981LLRATR-100U3, this Hall effect-based sensor is engineered for unidirectional currents ranging from 0A to 100A. 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 3.3V 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 “3V3 U10” 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: 3.3V
• Current Sense: 26.4 mV/A
• Logic Voltage Range: 3.0 ~ 3.6V
• Supply Current: 14mA
• Version: 0A to +100A (unidirectional 100A), 3.3V
• Current Sensor: Allegro ACS72981LLRATR-100U3
• Dimensions: 35.6 x 30.5mm
• Weight: 6g

PLEASE NOTE: This product is intended for use below 30V. Working with higher voltages can be extremely dangerous and should only be attempted by qualified individuals with appropriate equipment and experience.

Dimensions

Pinout

Schematic

Resources

• Product Page
• ACS72981 Datasheet

Shipping List

• 1 x DC Large Current Sensor 0A to +100A - 3.3V Logic

DC Large Current Sensor 0A to +100A - 3.3V Logic

• Brand: Pololu Electronics
• Product Code: 5275
• Weight: 0.006kg
• Product Status : Active

Stock

Warehouse	Stock Status	Location
Centurion	Limited Stock	B24
Stellenbosch	No Stock
Bulk Location	No Stock

We ship free of charge between branches to complete your order.

• R221.00 (Inc Tax: R254.15)