LKSR 50-NP Hall Effect Current Sensor Equivalent & Substitute Parts

Part Overview

The LKSR 50-NP is a closed-loop Hall Effect current sensor manufactured by LEM USA Inc., designed for AC/DC current measurement applications requiring 50A sensing capability. This sensor delivers ratiometric voltage output with bidirectional polarization and is classified as Active product status. The LKSR 50-NP is packaged as a through-hole module suitable for direct PCB integration. Equivalent substitute parts are identified when identical electrical performance, mechanical compatibility, and compliance certifications are maintained across alternative part numbers within the same manufacturer's product line.

Substiute Parts

LKSR 50-NP

LEM USA Inc.In Stock: 1028LKSR 50-NP Datasheet

Current PartRFQ

LESR 50-NP

LEM USA Inc.In Stock: 920LESR 50-NP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LKSR 50-NP is determined by strict equivalence across the following critical parameters:

Electrical Performance Criteria:

• Current sensing capacity: 50A
• Output configuration: Ratiometric voltage
• Sensitivity: 12.5 mV/A
• Frequency response: 300 kHz
• Linearity tolerance: ±0.1%
• Accuracy specification: ±1.25%
• Supply voltage range: 4.75V to 5.25V
• Response time: 400 ns
• Maximum supply current: 51.3 mA

Mechanical & Environmental Criteria:

• Mounting type: Through Hole
• Package classification: Module
• Operating temperature range: -40°C to 105°C
• Polarization: Bidirectional
• Sensor technology: Hall Effect, Closed Loop

Compliance Criteria:

• RoHS Compliant status
• MSL Rating: 1 (Unlimited)
• REACH Unaffected classification
• ECCN: EAR99

The LESR 50-NP meets all specified criteria and is classified as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The LKSR 50-NP is the designated primary part number for new designs and procurement. Active product status confirms ongoing manufacturer support and availability. Current inventory of 1,002 pieces supports immediate deployment requirements.

Substitute Part Selection: The LESR 50-NP is a direct parametric equivalent suitable for use when LKSR 50-NP availability is constrained. Both parts are manufactured by LEM USA Inc. and maintain identical electrical specifications, mechanical compatibility, and compliance certifications. The LESR 50-NP carries Active product status with 818 pieces in current inventory.

Compliance Assurance: Both part numbers maintain RoHS Compliant certification, REACH Unaffected classification, and EAR99 export control status. MSL Rating 1 (Unlimited) indicates no moisture sensitivity constraints during storage or handling. These certifications are maintained across both the primary and substitute part numbers.

Interchangeability Confirmation: Direct pin-for-pin and functional interchangeability is confirmed. Through-hole module packaging ensures identical PCB footprint compatibility. No circuit redesign, firmware modification, or application recalibration is required when transitioning between LKSR 50-NP and LESR 50-NP.

Frequently Asked Questions (FAQ)

Q: Can LESR 50-NP be used as a direct replacement for LKSR 50-NP in existing designs?

A: Yes. The LESR 50-NP is a parametric equivalent with identical electrical performance, mechanical compatibility, and compliance certifications. No design modifications are required.

Q: Are there differences in output signal characteristics between LKSR 50-NP and LESR 50-NP?

A: No. Both parts deliver identical ratiometric voltage output with 12.5 mV/A sensitivity, ±1.25% accuracy, and 400 ns response time.

Q: Do both part numbers support the same operating temperature range?

A: Yes. Both LKSR 50-NP and LESR 50-NP operate across -40°C to 105°C ambient temperature range.

Q: Is the through-hole mounting footprint identical between both parts?

A: Yes. Both parts are classified as through-hole module packages with identical mechanical mounting specifications.

Q: What is the supply voltage requirement for both sensors?

A: Both LKSR 50-NP and LESR 50-NP require 4.75V to 5.25V supply voltage with maximum supply current of 51.3 mA.

Q: Are there any RoHS or environmental compliance differences?

A: No. Both parts maintain identical RoHS Compliant status, REACH Unaffected classification, and MSL Rating 1 (Unlimited).

Q: Which part should be specified for new production designs?

A: The LKSR 50-NP is the primary specification for new designs. The LESR 50-NP is designated as an approved substitute for supply chain continuity.

Q: Can both parts be used interchangeably in the same PCB assembly?

A: Yes. Identical through-hole module packaging and electrical specifications confirm direct interchangeability without PCB redesign.