HLSR 20-SM Hall Effect Current Sensor - Equivalent & Substitute Parts

Part Overview

The HLSR 20-SM 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 20A 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 equivalent electrical and mechanical parameters allow direct functional replacement while accommodating specific system requirements such as supply voltage constraints or sensitivity specifications.

Substiute Parts

HLSR 20-SM

LEM USA Inc.In Stock: 780HLSR 20-SM Datasheet

Current PartRFQ

HLSR 20-SM/SP33

LEM USA Inc.In Stock: 895HLSR 20-SM/SP33 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HLSR 20-SM is determined by strict equivalence across the following critical parameters:

Core Functional Parameters (Must Match):

• Current sensing range: 20A
• Sensor technology: Hall Effect, Open Loop
• Channel configuration: 1 Channel
• Output format: Ratiometric, Voltage
• Polarization mode: Bidirectional
• Frequency response: 400kHz
• Linearity tolerance: ±0.5%
• Accuracy tolerance: ±1%
• Operating temperature range: -40°C to 105°C
• Mounting configuration: Surface Mount, Module package
• Compliance certifications: RoHS Compliant, REACH Unaffected

Variable Parameters (Allowed to Differ):

• Supply voltage specification (5V vs. 3.3V)
• Sensitivity rating (40mV/A vs. 23mV/A)
• Maximum supply current (within 25mA specification)
• Response time (2.5µs maintained)

The HLSR 20-SM/SP33 qualifies as a parametric equivalent because it maintains all core functional parameters while accommodating 3.3V supply voltage operation and adjusted sensitivity scaling appropriate for lower voltage systems.

Parameter Comparison

Engineering Selection Recommendations

HLSR 20-SM Selection Criteria: Select the HLSR 20-SM when system architecture specifies 5V supply voltage operation. This variant provides 40mV/A sensitivity, optimizing signal resolution for 5V-based measurement circuits. Product status is active with full manufacturing support. RoHS compliance and REACH unaffected status confirm regulatory alignment for industrial and commercial applications.

HLSR 20-SM/SP33 Selection Criteria: Select the HLSR 20-SM/SP33 when system architecture specifies 3.3V supply voltage operation, such as in low-power embedded systems or microcontroller-based measurement platforms. The 23mV/A sensitivity is scaled proportionally to the reduced supply voltage while maintaining equivalent measurement accuracy and linearity. Product status is active with equivalent manufacturing support and identical compliance certifications.

Substitution Constraints: Both variants maintain identical core functional specifications: 20A bidirectional Hall Effect sensing, 1-channel configuration, ratiometric voltage output, 400kHz frequency response, ±0.5% linearity, ±1% accuracy, 2.5µs response time, and -40°C to 105°C operating range. Substitution is valid only when the target system's supply voltage requirement matches the selected variant. No additional verification testing is required when substituting between these parts within the same supply voltage class.

Frequently Asked Questions (FAQ)

Q: Can HLSR 20-SM be substituted with HLSR 20-SM/SP33 in a 5V system?

A: No. The HLSR 20-SM/SP33 is specified for 3.3V supply voltage operation. Using it in a 5V system will result in incorrect sensitivity scaling and measurement errors. Select HLSR 20-SM for 5V systems.

Q: Can HLSR 20-SM/SP33 be substituted with HLSR 20-SM in a 3.3V system?

A: No. The HLSR 20-SM is specified for 5V supply voltage operation. Using it in a 3.3V system will result in insufficient voltage headroom and measurement inaccuracy. Select HLSR 20-SM/SP33 for 3.3V systems.

Q: Are the linearity and accuracy specifications identical between both variants?

A: Yes. Both HLSR 20-SM and HLSR 20-SM/SP33 maintain ±0.5% linearity and ±1% accuracy specifications. The difference in sensitivity (40mV/A vs. 23mV/A) is proportional to the supply voltage difference and does not affect measurement accuracy.

Q: What is the significance of the different sensitivity values?

A: Sensitivity scaling reflects the ratiometric output design. At 5V supply, the HLSR 20-SM provides 40mV/A output. At 3.3V supply, the HLSR 20-SM/SP33 provides 23mV/A output. Both maintain equivalent measurement resolution relative to their respective supply voltages.

Q: Are both parts suitable for AC/DC current measurement?

A: Yes. Both HLSR 20-SM and HLSR 20-SM/SP33 are specified for AC/DC current measurement with bidirectional sensing capability and 400kHz frequency response.

Q: Do both variants have identical packaging and mounting specifications?

A: Yes. Both parts use Surface Mount Module packaging in Tray format with identical MSL 1 (Unlimited) moisture sensitivity rating.

Q: Are there any compliance differences between the two variants?

A: No. Both HLSR 20-SM and HLSR 20-SM/SP33 are RoHS Compliant, REACH Unaffected, and carry identical ECCN (EAR99) and HTSUS (9030.33.3800) classifications.

Q: What is the response time for both variants?

A: Both variants maintain 2.5µs response time specification, ensuring equivalent dynamic performance in current measurement applications.

Q: Can these sensors be used in -40°C to 105°C temperature environments?

A: Yes. Both HLSR 20-SM and HLSR 20-SM/SP33 are rated for -40°C to 105°C operating temperature range.