Current Sensors

A current sensor is a device that detects and converts current to an easily measurable output voltage, which is proportional to the current through the measured path. There are a wide variety of sensors, and each sensor is suitable for a specific current range and environmental condition. Among these sensors, a current sensing resistor is the most commonly used. It can be considered a current-to-voltage converter, where inserting a resistor into the current path, the current is converted to voltage in a linear way. The technology used by the current sensor is important because different sensors can have different characteristics for a variety of applications.


Current sensors are based on either open or closed loop hall effect technology. A closed-loop sensor has a coil that is actively driven to produce a magnetic field that opposes the field produced by the current being sensed. The hall sensor is used as a null-detecting device, and the output signal is proportional to the current being driven into the coil, which is proportional to the current being measured.


In an open loop current sensor, the magnetic flux created by the primary current is concentrated in a magnetic circuit and measured using a hall device. The output from the hall device is the signal conditioned to provide an exact (instantaneous) representation of the primary current.


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  Manufacturer Part No Order Code Manufacturer / Description
Availability Price For
Price
Quantity
ACS712ELCTR-20A-T
ACS712ELCTR-20A-T - Linear Current Sensor, Hall Effect, +/- 20A, SOIC-8

1329624

Linear Current Sensor, Hall Effect, +/- 20A, SOIC-8

ALLEGRO MICROSYSTEMS

SENSOR, CURRENT, 20mA, SOIC-8; Quiescent Current:10mA; Bandwidth:80kHz; Sensor Case Style:SOIC; No. of Pins:8Pins; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; Operating Temperature Min:-40°C; Operating Temperature Max:85°C

  • 2,916 available for 3 - 4 business days delivery
  • 2,626 available for 4 - 5 business days delivery
+ Check Stock & Lead Times

  • 2,916 available for 3 - 4 business days delivery: (UK stock) Order before 7:35pm Mon – Fri. (Excluding National Holidays)
  • 2,626 available for 4 - 5 business days delivery: (US stock) Order before 6:00pm Mon – Fri. (Excluding National Holidays)

More stock available week commencing 23/11/20

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Suggested replacement for:1329624
1329624RL in Re-reel

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ACS712ELCTR-05B-T
ACS712ELCTR-05B-T - Linear Current Sensor, Hall Effect, +/- 5A, SOIC-8

1329623

Linear Current Sensor, Hall Effect, +/- 5A, SOIC-8

ALLEGRO MICROSYSTEMS

HALL EFFECT SENSOR, SOIC-8; Quiescent Current:8mA; Bandwidth:80kHz; Sensor Case Style:SOIC; No. of Pins:8Pins; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; Operating Temperature Min:-40°C; Operating Temperature Max:85°C

  • 6,409 available for 3 - 4 business days delivery
  • 3,486 available for 4 - 5 business days delivery
+ Check Stock & Lead Times

  • 6,409 available for 3 - 4 business days delivery: (UK stock) Order before 7:35pm Mon – Fri. (Excluding National Holidays)
  • 3,486 available for 4 - 5 business days delivery: (US stock) Order before 6:00pm Mon – Fri. (Excluding National Holidays)

  • 3,000 more will be available on 30/10/20
  • More stock available week commencing 8/02/21

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    Suggested replacement for:1329623
    1329623RL in Re-reel

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    ACS711KLCTR-12AB-T
    ACS711KLCTR-12AB-T - Current Sensor, Overcurrent Fault, 4 mA, 100 kHz, SOIC, 8 Pins, 3 V, 5.5 V

    2057423

    Current Sensor, Overcurrent Fault, 4 mA, 100 kHz, SOIC, 8 Pins, 3 V, 5.5 V

    ALLEGRO MICROSYSTEMS

    CURRENT SENSOR, 12.5A, 3.3V, 8SOIC; Quiescent Current:4mA; Bandwidth:100kHz; Sensor Case Style:SOIC; No. of Pins:8Pins; Supply Voltage Min:3V; Supply Voltage Max:5.5V; Operating Temperature Min:-40°C; Operating Temperature Max:125°C; Product Range:-; RoH

    • 4,863 available for 3 - 4 business days delivery
    + Check Stock & Lead Times

    • 4,863 available for 3 - 4 business days delivery: (UK stock) Order before 7:35pm Mon – Fri. (Excluding National Holidays)

    More stock available week commencing 11/01/21

    Restricted Item
    EMC1701-2-AIZL-TR
    EMC1701-2-AIZL-TR - Current Sensor, High Side, 950 µA, MSOP, 10 Pins, 3 V, 24 V

    2361959

    Current Sensor, High Side, 950 µA, MSOP, 10 Pins, 3 V, 24 V

    MICROCHIP

    CURRENT SENSOR, HIGH SIDE, MSOP-10; Quiescent Current:950µA; Bandwidth:-; Sensor Case Style:MSOP; No. of Pins:10Pins; Supply Voltage Min:3V; Supply Voltage Max:24V; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Product Range:-; RoHS Ph

    • 1,676 available for 3 - 4 business days delivery
    + Check Stock & Lead Times

    • 1,676 available for 3 - 4 business days delivery: (UK stock) Order before 7:35pm Mon – Fri. (Excluding National Holidays)

    More stock available week commencing 11/01/21

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    Suggested replacement for:2361959
    2361959RL in Re-reel

    Restricted Item
    ACS758LCB-100B-PFF-T
    ACS758LCB-100B-PFF-T - Current Sensor, Current Conductor, 10 mA, 120 kHz, PFF, 5 Pins, 3 V, 5.5 V

    1791393

    Current Sensor, Current Conductor, 10 mA, 120 kHz, PFF, 5 Pins, 3 V, 5.5 V

    ALLEGRO MICROSYSTEMS

    IC, CURRENT SENSOR, 100A, 3CB; Quiescent Current:10mA; Bandwidth:120kHz; Sensor Case Style:PFF; No. of Pins:5Pins; Supply Voltage Min:3V; Supply Voltage Max:5.5V; Operating Temperature Min:-40°C; Operating Temperature Max:150°C; Product Range:ACS758 Fami

    • 1,466 available for 4 - 5 business days delivery
    + Check Stock & Lead Times

    • 1,466 available for 4 - 5 business days delivery: (US stock) Order before 6:00pm Mon – Fri. (Excluding National Holidays)
    Available until stock is exhausted

    Restricted Item
    ACS758LCB-050B-PFF-T
    ACS758LCB-050B-PFF-T - Current Sensor, Current Conductor, 10 mA, 120 kHz, PFF, 5 Pins, 3 V, 5.5 V

    1791392

    Current Sensor, Current Conductor, 10 mA, 120 kHz, PFF, 5 Pins, 3 V, 5.5 V

    ALLEGRO MICROSYSTEMS

    IC, CURRENT SENSOR, 50A, 3CB; Quiescent Current:10mA; Bandwidth:120kHz; Sensor Case Style:PFF; No. of Pins:5Pins; Supply Voltage Min:3V; Supply Voltage Max:5.5V; Operating Temperature Min:-40°C; Operating Temperature Max:150°C; Product Range:ACS758 Famil

    Available for back order

    + Check Stock & Lead Times

    More stock available week commencing 30/11/20 Contact me when back in stock

    Restricted Item
    CSLW6B200M
    CSLW6B200M - Current Sensor, CSLW Series, Open Loop-200mA to 200mA, Sink, Source Output, 4.5 Vdc to 10.5 Vdc

    2396419

    Current Sensor, CSLW Series, Open Loop-200mA to 200mA, Sink, Source Output, 4.5 Vdc to 10.5 Vdc

    HONEYWELL

    CURRENT SENSOR, +/-0.2A, 4.5V-10.5V; Sensor Output:Sink / Source; Supply Voltage DC Min:4.5V; Supply Voltage DC Max:10.5VDC; Current Measuring Range DC:-200mA to 200mA; Current Measuring Range AC:-200mA to 200mA; Response Time:3µs; Accuracy %:-; Product

    Available for back order

    + Check Stock & Lead Times

    More stock available week commencing 30/11/20 Contact me when back in stock

    Restricted Item
    XTR116UA .
    XTR116UA . - Current Sensor, Loop Transmitter, 200 µA, 380 kHz, SOIC, 8 Pins, 7.5 V, 36 V

    1097504

    Current Sensor, Loop Transmitter, 200 µA, 380 kHz, SOIC, 8 Pins, 7.5 V, 36 V

    TEXAS INSTRUMENTS

    TRANSMITTER 420MA, SMD, SOIC8, 116; Quiescent Current:200µA; Bandwidth:380kHz; Sensor Case Style:SOIC; No. of Pins:8Pins; Supply Voltage Min:7.5V; Supply Voltage Max:36V; Operating Temperature Min:-55°C; Operating Temperature Max:125°C; Product Range:-;

    No Longer Stocked

    Restricted Item
    IR25750LTRPBF
    IR25750LTRPBF - Current Sensor, SOT, 5 Pins, -5 V, 20.8 V

    2580756

    Current Sensor, SOT, 5 Pins, -5 V, 20.8 V

    INFINEON

    CURRENT SENSOR IC, SOT-23-5; Quiescent Current:-; Bandwidth:-; Sensor Case Style:SOT; No. of Pins:5Pins; Supply Voltage Min:-5V; Supply Voltage Max:20.8V; Operating Temperature Min:-40°C; Operating Temperature Max:125°C; Product Range:µHVIC Series; RoHS

    No Longer Manufactured

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