HLSR 40-P Current Sensor Hall Effect Equivalent & Substitute Parts

Part Overview

The HLSR 40-P is an active Hall Effect current sensor manufactured by LEM USA Inc., designed for AC/DC current measurement applications requiring bidirectional sensing capability. This open-loop module provides ratiometric voltage output with 40A sensing range and operates across industrial temperature ranges. The product is currently active in production with full RoHS compliance and REACH unaffected status. Substitute parts are identified when application requirements permit operation at reduced current ratings or alternative supply voltages while maintaining core functional parameters including sensor type, output characteristics, and thermal operating range.

Substiute Parts

HLSR 40-P

LEM USA Inc.In Stock: 925HLSR 40-P Datasheet

Current PartRFQ

HLSR 32-P/SP33

LEM USA Inc.In Stock: 6296HLSR 32-P/SP33 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HLSR 40-P is determined by strict adherence to the following core parameters:

Mandatory Matching Parameters:

• Sensor Type: Hall Effect, Open Loop
• Number of Channels: 1
• Output Type: Ratiometric, Voltage
• Frequency Response: 400 kHz
• Linearity: ±0.5%
• Accuracy: ±1%
• Response Time: 2.5 µs
• Maximum Supply Current: 25 mA
• Operating Temperature Range: -40°C to 105°C
• Polarization: Bidirectional
• Mounting Type: Through Hole
• Package Type: Module
• RoHS Status: RoHS Compliant

Variable Parameters Permitting Substitution:

• Current Sensing Range (40A primary; 32A acceptable for reduced-current applications)
• Supply Voltage (5V primary; 3.3V acceptable with compatible system design)
• Sensitivity (20 mV/A primary; 14.375 mV/A for 32A variant)

The HLSR 32-P/SP33 qualifies as a parametric equivalent when applications operate within 32A maximum current measurement requirements and system architecture supports 3.3V supply voltage operation.

Parameter Comparison

Engineering Selection Recommendations

HLSR 40-P Selection Criteria: Select the HLSR 40-P when applications require measurement of AC/DC currents up to 40A with 5V supply voltage availability. This part is the primary specification for systems designed around 40A full-scale current sensing with ratiometric voltage output. The 20 mV/A sensitivity provides direct proportional output scaling across the full 40A range.

HLSR 32-P/SP33 Selection Criteria: The HLSR 32-P/SP33 serves as a substitute when all of the following conditions are met:

• Maximum measured current does not exceed 32A
• System power architecture supports 3.3V supply voltage operation
• Signal conditioning and analog-to-digital conversion accommodate 14.375 mV/A sensitivity scaling
• Application thermal and frequency response requirements remain within specified operating parameters

Both parts maintain identical core performance specifications including linearity (±0.5%), accuracy (±1%), response time (2.5 µs), and operating temperature range (-40°C to 105°C). Both are RoHS Compliant and REACH Unaffected, meeting equivalent regulatory compliance requirements. Product status is Active for both variants, ensuring continued manufacturing availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can HLSR 32-P/SP33 be used as a direct replacement for HLSR 40-P in existing designs?

A: Direct replacement is not recommended without design review. The HLSR 32-P/SP33 operates at 3.3V supply voltage versus the HLSR 40-P's 5V requirement, and current sensing range is limited to 32A. If the application measures currents exceeding 32A or requires 5V supply operation, the HLSR 40-P must be retained. If application current never exceeds 32A and 3.3V supply is available, substitution is permissible with signal conditioning adjustment for the different sensitivity value (14.375 mV/A versus 20 mV/A).

Q: What is the relationship between current sensing range and sensitivity in these parts?

A: Sensitivity is inversely proportional to current range. The HLSR 40-P provides 20 mV/A across 40A range, while the HLSR 32-P/SP33 provides 14.375 mV/A across 32A range. Both deliver full-scale output voltage within their respective current ranges. Signal processing circuits must account for this sensitivity difference when substituting parts.

Q: Are there any packaging or mounting differences between HLSR 40-P and HLSR 32-P/SP33?

A: Both parts use identical Through Hole mounting type and Module package configuration. No mechanical or PCB layout modifications are required for physical installation. Electrical interface differences (supply voltage and sensitivity) require circuit design consideration.

Q: Do both parts support bidirectional current measurement?

A: Yes. Both HLSR 40-P and HLSR 32-P/SP33 feature bidirectional polarization, enabling measurement of current flow in both directions with ratiometric voltage output.

Q: What is the frequency response capability of these sensors?

A: Both parts support 400 kHz frequency response with 2.5 µs response time, enabling measurement of AC currents and transient current changes within this bandwidth.

Q: Are there supply chain or inventory considerations for part selection?

A: Both parts are Active products in current production. Inventory availability should be verified with the supplier for project timeline requirements.