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Compact current sensor based on TMR technology, enabling precise measurements up to 20 A with minimal energy losses. Thanks to a wide 1 MHz bandwidth, galvanic isolation and interference immunity, it is perfect for applications requiring fast response and high accuracy. Pololu 5316
CT433-HSWF20DR TMR Current Sensor is a compact current sensor module based on Allegro's TMR (Tunneling Magnetoresistance) technology. It is designed for precise current measurements in the range of 0 A to 20 A, offering electrical isolation and high resistance to interference. With a wide 1 MHz bandwidth, the sensor is ideal for applications requiring a fast response to current changes. The device has an extremely low conduction path resistance of just 1 mΩ, minimizing energy losses. Its analog voltage output, proportional to current intensity, enables accurate monitoring of both DC (direct current) and AC (alternating current). Due to its resistance to magnetic fields, the sensor’s orientation relative to external fields does not affect the measurements. The sensor operates with a supply voltage range of 3.0 V to 3.6 V, and its output is non-ratiometric, meaning that the zero-point and sensitivity are independent of the actual supply voltage. An optional overcurrent protection function (FLT) signals when 110% of the maximum measurement range is exceeded, allowing for rapid fault detection.

The compact PCB is made of two-layer copper, ensuring durability and reliability, while the 2.54 mm pin spacing allows for easy use with prototype boards and development modules. Connection points are clearly labeled on the silkscreen layer, and an additional arrow indicates the direction of positive current flow. The sensor can be inserted anywhere in the circuit, providing galvanic isolation and eliminating the need for complex measurement circuits. With its high accuracy, small size, and strong resistance to interference, the CT433-HSWF20DR is an excellent choice for power systems, power converters, and motor control applications. Its versatility and ease of implementation make it a great solution for both engineers and hobbyists.
Data sheet
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
A compact Hall-effect current sensor that provides accurate DC and AC current measurement within a ±10 A range with galvanic isolation. It features a high-sensitivity analog VOUT output with a 150 kHz bandwidth, enabling fast and precise readings in dynamic systems. The module operates over a wide temperature range of -40°C to 125°C, and the low current path resistance minimizes energy loss. Its small size and flexible mounting options make it ideal for prototyping, industrial systems, and space-constrained projects. Pololu 5456
No product available!
A modern current sensor combining the Hall effect with an inductive coil, which allows for precise measurements of both the DC and AC components up to 5 MHz. Thanks to its lightning-fast response time and low path resistance, it is perfect for motor control systems, power converters and protection systems. Pololu 5232
The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5259
The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5262
Module with an analog current sensor. It enables the measurement of alternating and direct currents up to 50 A. Cytron BB-ACS756
This module provides precise, galvanically isolated current measurement within a range of ±30 A and voltage up to 480 VRMS, providing RMS, instantaneous, and active, reactive, and apparent power readings. Equipped with an I²C interface, 4-pin JST SH connectors, and 2.54 mm pins, it allows for easy integration with Qwiic, STEMMA QT, and standard microcontrollers. Configuration stored in EEPROM allows for defining address and overload thresholds. The sensor offers three voltage measurement ranges (120 V - default, 240 V, 480 V RMS) and the ability to detect overvoltages. Built-in protection and low conduction resistance ensure safe and accurate measurements. The version comes with soldered screw terminals. Pololu 5411
No product available!
Module with an analog current sensor. Enables measurement of alternating and direct current up to 20 A. DFRobot SEN0214
The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5256
The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5270
Module with an analog current sensor. It enables the measurement of AC and DC current up to 50 A. DFRobot SEN0098
No product available!
Precision Hall effect current sensor offering galvanic isolation, wide bandwidth of 150 kHz and the ability to measure AC and DC current with very low power loss. Thanks to differential measurement and immunity to magnetic interference, it is perfect for applications requiring accurate current monitoring, such as power supplies, converters or motor control systems. Pololu 5295
A compact Hall-effect current sensor that provides accurate DC and AC current measurement within a ±30 A range with galvanic isolation. It features a high-sensitivity analog VOUT output with a 150 kHz bandwidth, enabling fast and precise readings in dynamic systems. The module operates over a wide temperature range of -40°C to 125°C, and its low current path resistance (~1.6 mΩ) minimizes energy loss. Its small size and flexible mounting options make it ideal for prototyping, industrial systems, and space-constrained projects. Pololu 5451
No product available!
The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5252
The module with a TA12-200 current sensor with a measuring range of alternating current up to 5 A. The board is equipped with a Grove connector and communicates via an analog interface. Seeed Studio 101020027
INA169 current sensor module. The system can be supplied with the voltage from 2.7 V to 60 V and has an analog output. SparkFun SEN-12040
No product available!
A compact Hall-effect current sensor that provides accurate DC and AC current measurement within a ±10 A range with galvanic isolation. It features a high-sensitivity analog VOUT output with a 150 kHz bandwidth, enabling fast and precise readings in dynamic systems. The module operates over a wide temperature range of -40°C to 125°C, and the low current path resistance minimizes energy loss. Its small size and flexible mounting options make it ideal for prototyping, industrial systems, and space-constrained projects. Pololu 5454
No product available!
Compact current sensor based on TMR technology, enabling precise measurements up to 20 A with minimal energy losses. Thanks to a wide 1 MHz bandwidth, galvanic isolation and interference immunity, it is perfect for applications requiring fast response and high accuracy. Pololu 5316