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Compact current sensor based on TMR technology, enabling precise measurements up to 20 A with minimal energy loss. Thanks to a wide 1 MHz bandwidth, galvanic isolation and interference immunity, it is perfect for applications requiring fast response and high accuracy. Pololu 5304
CT432-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 4.75 V to 5.5 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 CT432-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
Compact current sensor Pololu 5300 based on the CT432-HSWF20MR, designed for current measurement in the range from -20A to +20A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5300
Compact current sensor Pololu 5301 based on the CT432-HSWF30MR, designed for current measurement in the range from -30A to +30A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5301
Compact current sensor Pololu 5302 based on the CT432-HSWF50MR, designed for current measurement in the range from -50A to +50A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5302
Compact current sensor Pololu 5303 based on the CT432-HSWF65MR, designed for current measurement in the range from -65A to +65A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5303
Pololu 5242 with the ACS71240KEXBLT-050B3 chip is a compact current sensor module for precision measurement applications in the ±50 A range. With galvanic isolation, fast response to current changes, and short-circuit detection capability, it is used in power systems, automotive and industrial electronics, and embedded projects. It is ideal for measuring currents in both DC and AC circuits while ensuring safety and accuracy.
The INA3221 module, which allows simultaneous measurement of voltage and current for three power supplies via I2C with ±1% precision. With a 13-bit ADC and built-in 0.05Ω shunt resistors, it allows accurate monitoring of currents up to ±3.2A and voltages up to +26VDC. Adafruit 6062
HSTS08L 10A 2.5V Current Sensor. Enables measurement of high currents. modHSTS08L
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Compact current sensor based on TMR technology, enabling precise measurements up to 30 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 5317
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
Compact current sensor based on TMR technology, enabling precise measurements up to 30 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 5305
Compact current sensor based on TMR technology, enabling precise measurements up to 20 A with minimal energy loss. Thanks to a wide 1 MHz bandwidth, galvanic isolation and interference immunity, it is perfect for applications requiring fast response and high accuracy. Pololu 5304
Precision Hall effect current sensor, providing galvanic isolation and wide 250 kHz bandwidth. Low conductive path resistance, magnetic interference immunity and ratiometric analog output make it ideal for AC and DC current monitoring applications. Pololu 5281
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 5261
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 5251
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 5250
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 5235
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
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 5230
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 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 5455
Compact current sensor based on TMR technology, enabling precise measurements up to 20 A with minimal energy loss. Thanks to a wide 1 MHz bandwidth, galvanic isolation and interference immunity, it is perfect for applications requiring fast response and high accuracy. Pololu 5304