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Hot Products

HOB 75-P/SP34 , HOB75-P/SP34

Second. Nominal Signal[Instantaneous:Voltage 1.65 +/- 0.92 V]
  • MacroQuest Part#HOB 75-P/SP34
  • ManufacturerLEM
  • Standard Lead TimeNA
  • Part StatusActive
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    Description FAQ Review
    Description

    LEM HOB 75-P/SP34 HOB Series Open Loop Hall Effect Current Transducer

     

    LEM HOB 75-P/SP34 Product Overview

    The HOB 75-P/SP34 is an open-loop Hall effect current transducer from LEM's HOB Series, designed for the electronic measurement of DC, AC, and pulsed currents with galvanic isolation between the primary and secondary circuits . This PCB-mount transducer is the SP34 variant, featuring a single +5 V supply and a ratiometric 0-5 V output .

    Rated for 75 A nominal with a measuring range of ±225 A (3 × IPN), it outputs a ratiometric analog voltage of 0-5 V with ±1% accuracy and ±1% linearity . Sensitivity is 33.3 mV/A . Response time is 3 µs and frequency bandwidth is DC to 50 kHz . Supply voltage range is +5 V (±5%) with a maximum current consumption of 15 mA . Mass is <30 g and operating temperature ranges from -40°C to +80°C . Insulation test voltage is 2.5 kV RMS at 50 Hz for 1 minute . The device features a 16 mm diameter aperture for primary conductor installation and requires only 4.3 cm² of PCB space . The insulating plastic case is recognized according to UL 94-V0 .

     

    LEM HOB 75-P/SP34 Key Specifications

    Parameter

    Value

    Rated current (IPN)

    75 A

    Measuring range (IPM)

    ±225 A

    Output signal

    0-5 V (ratiometric voltage)

    Sensitivity

    33.3 mV/A

    Supply voltage (VC)

    +5 V (±5%)

    Accuracy (X)

    ±1 %

    Linearity (εL)

    ±1 %

    Response time (tr)

    3 µs

    Bandwidth (BW)

    DC to 50 kHz

    Insulation test voltage (Vd)

    2.5 kV RMS / 50 Hz / 1 min

    Aperture

    16 mm diameter

    Operating temp (TA)

    -40°C to +80°C

    Mass (m)

    <30 g

    Mounting

    PCB

    Technology

    Open-loop Hall effect

     

    LEM HOB 75-P/SP34 Key Advantages

    The HOB 75-P/SP34 employs open-loop Hall effect technology, delivering ±1% accuracy and ±1% linearity while providing galvanic isolation between primary and secondary circuits . The ±225 A measuring range accommodates overloads up to three times nominal current. The 50 kHz bandwidth and 3 µs response time capture dynamic signals in motor drive and power conversion applications.

    A key differentiator of the SP34 variant is the single +5 V supply and ratiometric 0-5 V output, simplifying integration into low-voltage systems without requiring bipolar supplies . The compact PCB design requires only 4.3 cm² of board space with a 16 mm aperture for conductor installation . The series offers a single design for multiple current ratings, simplifying inventory management. The device offers low power consumption, high immunity to external interference, and no insertion losses .

     

    LEM HOB 75-P/SP34 Typical Applications

    AC variable speed drives and servo motor drives
    Static converters for DC motor drives
    Battery supplied applications
    Uninterruptible Power Supplies (UPS)
    Switched Mode Power Supplies (SMPS)
    Power supplies for welding applications
    Renewable energy systems
    Industrial power management

     

    Why Choose the LEM HOB 75-P/SP34?

    The HOB 75-P/SP34 combines a 75 A rated current and ±225 A measuring range with 0-5 V ratiometric voltage output in a compact PCB-mount package with a single +5 V supply . Manufactured by LEM, it delivers stable, accurate, and safe current measurement for industrial applications. The open-loop Hall effect design offers a cost-effective solution with excellent interference immunity, small footprint, and wide -40°C to +80°C operating temperature range . Compliance with UL 94-V0 ensures reliable operation in demanding environments. The 5-year LEM warranty provides long-term reliability assurance .

     

    FAQ
    Q
    What is the advantage of MacroQuest?
    A
    Our advantage is that we not only low prices, but we more suited to you.
    Our Keywords is
    New and original parts
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    Short Leadtime
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    Q: I want to work with MacroQuest because of high quality. But I found your price too high and out of line with the prevailing market level, how should I do?
    A: MacroQuest has been devoted to offer a best price to our customers,if you want to buy it at a cheapper price. Please contact us directly to see if we can negotiate  a cheaper price rate. Or, send us an email with your T/P.
    Simon Hsu
    simon@mymacroquest.com
    Alice Wang
    alice@mymacroquest.com

    Q: Can MacroQuest offer NET terms?
    A: Yes we can. Please contact with your sales manager for more information.

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    Q：Are all the parts new and original?
    -A:Yes, all parts are new and original checked by our quality control department.

    Q：How long is your warranty?
    -A:We offer a 1 year warranty for form fit and function for MacroQuest stock. 


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    Winslow
    Apr 27, 2026
    Excellent company in every way
    Candance
    Sep 29, 2025
    Very good quality .
    Florine
    May 08, 2025
    Great company...hope to do more biz soon.
    Vanessa
    Apr 28, 2025
    awesome!!! the best quality!
    York
    Apr 03, 2024
    packed perfectly
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