LTS 15-NP Current Sensor Equivalent & Substitute Parts

Part Overview

The LTS 15-NP is a Hall Effect current sensor manufactured by LEM USA Inc., designed for AC/DC current measurement applications requiring closed-loop bidirectional sensing at 15A capacity. This component features a single-channel configuration with ratiometric voltage output and operates across a wide temperature range from -40°C to 85°C.

The LTS 15-NP is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this sensor.

Substiute Parts

LTS 15-NP

LEM USA Inc.In Stock: 824LTS 15-NP Datasheet

Current PartRFQ

CAS 15-NP

LEM USA Inc.In Stock: 1130CAS 15-NP Datasheet

DirectRFQ

T60404N4646X651

VACUUMSCHMELZEIn Stock: 3309T60404N4646X651 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTS 15-NP are identified based on strict alignment with the following critical parameters:

Primary Substitution Criteria:

• Current sensing capacity: 15A nominal rating
• Measurement capability: AC/DC bidirectional or unidirectional
• Output configuration: Ratiometric voltage output
• Mounting interface: Through hole configuration
• Supply voltage compatibility: 5V nominal operation
• Operating temperature range: -40°C to 85°C minimum
• Regulatory compliance: RoHS and REACH status

Substitute Classification:

Direct Equivalent (CAS 15-NP): Maintains identical 15A current sensing capacity, bidirectional polarization, single-channel configuration, and through-hole mounting. Operates within compatible supply voltage range (4.75V ~ 5.25V) and temperature specifications. Differs in sensor technology (Flux Gate vs. Hall Effect) and frequency response characteristics.

Similar Substitute (T60404N4646X651): Provides 25A current sensing capacity with closed-loop unidirectional measurement. Maintains compatible supply voltage range, through-hole mounting, and operating temperature specifications. Differs in polarization (unidirectional vs. bidirectional), package format (9-DIP Module vs. Single Pass Through), and current rating elevation.

Parameter Comparison

Engineering Selection Recommendations

CAS 15-NP Selection Rationale:

The CAS 15-NP represents the direct equivalent substitute for the obsolete LTS 15-NP. Both components maintain identical 15A current sensing capacity, single-channel configuration, bidirectional polarization, and through-hole mounting architecture. The CAS 15-NP is currently in active production status, ensuring supply chain availability and long-term support.

Key compatibility factors include matching sensitivity specifications (41.6 mV/A vs. 41.67 mV/A), compatible supply voltage operation (5V nominal within 4.75V ~ 5.25V range), and identical operating temperature range (-40°C ~ 85°C). Both components carry RoHS Compliant and REACH Unaffected certifications, meeting current regulatory requirements.

The primary technical difference is sensor technology implementation (Flux Gate vs. Hall Effect), which does not preclude functional substitution in applications designed for the LTS 15-NP. The CAS 15-NP demonstrates superior frequency response (300 kHz vs. 200 kHz) and faster response time (0.3 µs vs. 0.4 µs), representing performance enhancements.

T60404N4646X651 Selection Rationale:

The T60404N4646X651 functions as a similar substitute when application requirements permit current sensing elevation to 25A. This component maintains closed-loop measurement architecture, AC/DC capability, ratiometric voltage output, and through-hole mounting configuration. Active production status and ROHS3 Compliant certification ensure regulatory alignment.

This substitute is applicable only when circuit design accommodates unidirectional polarization (vs. bidirectional LTS 15-NP operation) and 9-DIP Module package format (vs. Single Pass Through). The elevated 25A rating provides design margin for applications with current measurement headroom. Response time improvement (300 ns vs. 0.4 µs) and accuracy specification (±0.7% vs. ±0.2%) represent measurable performance trade-offs.

Frequently Asked Questions (FAQ)

Q: Can the CAS 15-NP directly replace the LTS 15-NP without circuit modification?

A: The CAS 15-NP maintains electrical and mechanical compatibility with the LTS 15-NP across all critical parameters: 15A current sensing, bidirectional measurement, ratiometric voltage output, 5V supply operation, and through-hole mounting. Functional substitution is supported without circuit redesign. Sensitivity values are equivalent (41.6 mV/A vs. 41.67 mV/A), ensuring signal conditioning compatibility.

Q: What are the key differences between Hall Effect (LTS 15-NP) and Flux Gate (CAS 15-NP) sensor technologies?

A: Both technologies provide closed-loop current measurement with ratiometric voltage output. Hall Effect sensors (LTS 15-NP) operate across DC ~ 200 kHz frequency range with 0.4 µs response time and ±0.1% linearity. Flux Gate sensors (CAS 15-NP) extend frequency response to 300 kHz with 0.3 µs response time but exhibit ±1% linearity. Technology selection depends on application frequency requirements and linearity specifications.

Q: Is the T60404N4646X651 suitable for applications requiring bidirectional current measurement?

A: No. The T60404N4646X651 operates with unidirectional polarization, limiting measurement to single current direction. The LTS 15-NP and CAS 15-NP both support bidirectional polarization for AC/DC measurement in both current directions. Applications requiring bidirectional sensing must use CAS 15-NP or equivalent bidirectional-rated components.

Q: What packaging considerations apply when substituting these components?

A: The LTS 15-NP and CAS 15-NP utilize Module package formats with through-hole mounting, supporting direct PCB integration. The T60404N4646X651 employs 9-DIP Module package format, also through-hole mounted but with different pin configuration and footprint. PCB layout modification is required when selecting T60404N4646X651. Packaging compatibility must be verified against existing board designs.

Q: Are all three components compliant with current regulatory standards?

A: Yes. The LTS 15-NP, CAS 15-NP, and T60404N4646X651 all carry RoHS Compliant or ROHS3 Compliant certification and REACH Unaffected status, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

Q: What is the supply voltage tolerance for each component?

A: The LTS 15-NP operates at 5V nominal supply. The CAS 15-NP and T60404N4646X651 both support 4.75V ~ 5.25V supply voltage range, providing ±5% tolerance. Applications with strict 5V supply regulation can use any component. Systems with supply voltage variation require CAS 15-NP or T60404N4646X651 for guaranteed operation across the specified range.