LF 1005-S/SP21 Equivalent & Substitute Parts

Part Overview

The LF 1005-S/SP21 is a Hall Effect current sensor manufactured by LEM USA Inc., designed for AC/DC current measurement applications requiring 1000A sensing capability. This component is a closed-loop bidirectional module with ratiometric current output, suitable for industrial and power conversion applications.

The LF 1005-S/SP21 carries a "Not For New Designs" product status designation. This status indicates the part is in mature or end-of-life phase. Identifying equivalent substitute parts ensures design continuity, supply chain flexibility, and long-term project viability when the primary part becomes unavailable or when alternative sourcing is required.

Substiute Parts

LF 1005-S/SP21

LEM USA Inc.In Stock: 897LF 1005-S/SP21 Datasheet

Current PartRFQ

LF 1005-S

LEM USA Inc.In Stock: 1258LF 1005-S Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LF 1005-S/SP21 is determined by strict parameter matching across the following critical criteria:

Mandatory Matching Parameters:

• Sensor Type: Hall Effect, Closed Loop
• Current Sensing Capability: 1000A
• Number of Channels: 1
• Output Configuration: Ratiometric, Current
• Frequency Response: DC ~ 150kHz
• Linearity: ±0.1%
• Accuracy: ±0.4%
• Supply Voltage Range: ±15V ~ 24V
• Response Time: 1µs
• Operating Temperature Range: -40°C ~ 85°C
• Polarization: Bidirectional
• Mounting Type: Chassis Mount
• Package Type: Module
• Manufacturer: LEM USA Inc.
• RoHS Compliance: RoHS Compliant

The LF 1005-S qualifies as a parametric equivalent to the LF 1005-S/SP21 because all electrical, mechanical, and environmental specifications are identical. Both parts belong to the same LF series and share identical performance characteristics across all measured parameters.

Parameter Comparison

Engineering Selection Recommendations

Compliance and Regulatory Status:

Both the LF 1005-S/SP21 and LF 1005-S maintain identical RoHS compliance and REACH unaffected status, ensuring regulatory compatibility across applications subject to environmental directives. Both parts carry EAR99 export classification and share the same HTSUS commodity code, indicating no additional compliance burden when transitioning between these parts.

Product Status Consideration:

The LF 1005-S/SP21 designation indicates "Not For New Designs" status. The LF 1005-S carries the same product status classification. When both parts share this designation, substitution does not introduce additional obsolescence risk. However, for new design initiatives, evaluation of current-generation LEM Hall Effect current sensors outside the LF series may be warranted to ensure long-term supply availability.

Inventory and Availability:

The LF 1005-S demonstrates higher inventory availability (1187 Pcs) compared to the LF 1005-S/SP21 (856 Pcs), providing improved supply chain flexibility for immediate procurement requirements.

Functional Equivalence:

The LF 1005-S is a direct parametric equivalent. All electrical performance metrics, mechanical mounting specifications, and environmental operating ranges are identical. No circuit redesign, recalibration, or application revalidation is required when substituting the LF 1005-S for the LF 1005-S/SP21 in existing designs.

Frequently Asked Questions (FAQ)

Q: Can the LF 1005-S directly replace the LF 1005-S/SP21 without circuit modifications?

A: Yes. The LF 1005-S is a parametric equivalent with identical electrical specifications, output characteristics, supply voltage requirements, and mechanical mounting. No circuit redesign is necessary.

Q: What is the difference between LF 1005-S/SP21 and LF 1005-S?

A: Both parts are functionally and electrically identical. The "/SP21" suffix on the LF 1005-S/SP21 typically indicates a specific packaging or supplier designation variant. The core sensor specifications, performance parameters, and output characteristics are identical.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical RoHS compliance status, REACH unaffected designation, EAR99 export classification, and HTSUS commodity code. Regulatory and compliance requirements are equivalent.

Q: What is the "Not For New Designs" status, and does it affect substitution?

A: "Not For New Designs" indicates the part is in mature or end-of-life phase. Since both the main part and substitute carry this designation, substitution does not introduce additional obsolescence risk. However, for new design initiatives, current-generation alternatives should be evaluated for extended product lifecycle support.

Q: Is the LF 1005-S suitable for applications currently using the LF 1005-S/SP21?

A: Yes. The LF 1005-S meets all electrical, mechanical, and environmental requirements of the LF 1005-S/SP21. Direct substitution is supported for all AC/DC current measurement applications requiring 1000A sensing, closed-loop Hall Effect operation, and bidirectional polarization.

Q: What is the packaging configuration for both parts?

A: Both the LF 1005-S/SP21 and LF 1005-S are supplied in Tray packaging as chassis-mount modules. Mechanical mounting and PCB integration requirements are identical.

Q: Are there supply chain advantages to using the LF 1005-S?

A: The LF 1005-S demonstrates higher current inventory availability (1187 Pcs versus 856 Pcs for the LF 1005-S/SP21), potentially offering improved lead times and procurement flexibility.