LTS 6-NP Current Sensor Equivalent & Substitute Parts

Part Overview

The LTS 6-NP is a Hall Effect closed-loop current sensor manufactured by LEM USA Inc., designed for AC/DC current measurement applications with a 6A sensing range. This component operates as a single-channel, bidirectional module with through-hole mounting and ratiometric voltage output. The LTS 6-NP is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system support, design updates, and procurement continuity. Active alternative models from LEM USA Inc. and third-party manufacturers provide functional equivalence while maintaining compliance with industry standards.

Key Parameters

Parameter	LTS 6-NP
Manufacturer	LEM USA Inc.
Series	LTS
Product Status	Obsolete
Sensor Type	Hall Effect, Closed Loop
Current Sensing Range	6A
Number of Channels	1
Polarization	Bidirectional
Output Type	Ratiometric, Voltage
Sensitivity	104.16 mV/A
Frequency Range	DC ~ 200 kHz
Linearity	±0.1%
Accuracy	±0.2%
Supply Voltage	5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package Type	Module, Single Pass Through
RoHS Status	RoHS Compliant
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the LTS 6-NP are identified based on strict alignment with the following critical parameters:

Primary Substitution Criteria:

Current sensing capacity: 6A
Number of channels: 1
Polarization: Bidirectional
Output configuration: Ratiometric, Voltage
Mounting type: Through Hole
Measurement capability: AC/DC
Compliance: RoHS Compliant, REACH Unaffected

Substitution Logic:

The LTS 6-NP can be substituted with parts that maintain identical current sensing specifications (6A), single-channel architecture, and bidirectional measurement capability. Sensor technology (Hall Effect vs. Flux Gate) represents a functional variation within closed-loop measurement principles. Frequency response, linearity, accuracy, and supply voltage specifications must remain within acceptable operational ranges for the target application.

Identified Substitute Categories:

Direct LEM USA Inc. Hall Effect Alternatives (LES 6-NP, LXS 6-NPS): Active products maintaining Hall Effect technology with enhanced temperature operating ranges and improved response times.
LEM USA Inc. Flux Gate Alternative (CAS 6-NP): Active product utilizing Flux Gate technology with extended frequency response (300 kHz vs. 200 kHz).
Third-Party Closed-Loop Alternative (T60404N4647X663 by VACUUMSCHMELZE): Active product with unidirectional polarization and 10-DIP module packaging, suitable for applications not requiring bidirectional measurement.

Parameter Comparison

Parameter	LTS 6-NP	CAS 6-NP	LES 6-NP	LXS 6-NPS	T60404N4647X663
Manufacturer	LEM USA Inc.	LEM USA Inc.	LEM USA Inc.	LEM USA Inc.	VACUUMSCHMELZE
Product Status	Obsolete	Active	Active	Active	Active
Sensor Type	Hall Effect, Closed Loop	Flux Gate, Closed Loop	Hall Effect, Closed Loop	Hall Effect, Closed Loop	Closed Loop
Current Sensing	6A	6A	6A	6A	6A
Number of Channels	1	1	1	1	1
Output Type	Ratiometric, Voltage	Ratiometric, Voltage	Ratiometric, Voltage	Ratiometric, Voltage	Ratiometric, Voltage
Sensitivity	104.16 mV/A	104.2 mV/A	104.2 mV/A	104.2 mV/A	Not Specified
Frequency Range	DC ~ 200 kHz	300 kHz	300 kHz	300 kHz	DC ~ 200 kHz
Linearity	±0.1%	±1%	±0.1%	±0.1%	±0.1%
Accuracy	±0.2%	±0.8%	±2.25%	±2.25%	±0.7%
Supply Voltage	5V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V
Response Time	0.4 µs	0.3 µs	400 ns	400 ns	300 ns
Current Supply (Max)	Not Specified	20 mA	23 mA	23 mA	15 mA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 85°C
Polarization	Bidirectional	Bidirectional	Bidirectional	Bidirectional	Unidirectional
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package Type	Module, Single Pass Through	Module	Module	Module	10-DIP Module
RoHS Status	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	Not Specified

Engineering Selection Recommendations

For Direct Replacement (Bidirectional Measurement Required):

The LES 6-NP and LXS 6-NPS represent the most direct functional equivalents to the obsolete LTS 6-NP. Both are active LEM USA Inc. Hall Effect sensors maintaining identical 6A current sensing, single-channel architecture, and bidirectional polarization. These parts offer improved operating temperature ranges (-40°C ~ 105°C vs. -40°C ~ 85°C) and faster response times (400 ns vs. 0.4 µs). Supply voltage tolerance is expanded to 4.75V ~ 5.25V, providing greater design flexibility. RoHS compliance and REACH unaffected status are maintained. Selection between LES 6-NP and LXS 6-NPS depends on inventory availability and packaging preference (both supplied in trays).

For Enhanced Frequency Response:

The CAS 6-NP Flux Gate sensor provides extended frequency capability (300 kHz vs. 200 kHz) while maintaining 6A bidirectional measurement. This alternative is suitable for applications requiring higher frequency measurement bandwidth. Linearity specification is ±1% compared to ±0.1% for Hall Effect alternatives, and accuracy is ±0.8%. Supply current is reduced to 20 mA maximum. Active product status and full compliance certifications apply.

For Unidirectional Applications:

The T60404N4647X663 by VACUUMSCHMELZE is suitable only for applications where unidirectional current measurement is acceptable. This part maintains 6A sensing capacity, closed-loop operation, and identical frequency range (DC ~ 200 kHz). The 10-DIP module package differs from the single pass-through configuration of the LTS 6-NP, requiring PCB layout verification. Response time is superior at 300 ns. ROHS3 compliance is confirmed.

Compliance Verification:

All recommended substitutes maintain RoHS compliance and REACH unaffected status, ensuring regulatory alignment with the original LTS 6-NP specification.

Frequently Asked Questions (FAQ)

Q1: Can the LES 6-NP or LXS 6-NPS be used as direct drop-in replacements for the LTS 6-NP?

A: The LES 6-NP and LXS 6-NPS maintain functional equivalence for 6A bidirectional current measurement with identical output type (ratiometric voltage) and mounting configuration (through-hole). Both are active products from LEM USA Inc. with enhanced specifications. PCB layout compatibility must be verified, as package dimensions may differ from the original LTS 6-NP single pass-through module. Electrical interface compatibility (pin configuration and voltage levels) requires design review.

Q2: What is the primary difference between the CAS 6-NP (Flux Gate) and the Hall Effect alternatives?

A: The CAS 6-NP utilizes Flux Gate technology with extended frequency response (300 kHz vs. 200 kHz). Linearity specification is ±1% compared to ±0.1% for Hall Effect sensors. Accuracy is ±0.8%. Both technologies provide closed-loop bidirectional measurement at 6A. Flux Gate sensors typically offer superior temperature stability and lower drift characteristics. Selection depends on application frequency requirements and accuracy tolerance.

Q3: Why is the T60404N4647X663 listed as a substitute if it is unidirectional?

A: The T60404N4647X663 is included as a substitute for applications where unidirectional current measurement is functionally acceptable. It maintains 6A closed-loop measurement capability, identical frequency range (DC ~ 200 kHz), and superior response time (300 ns). The unidirectional polarization represents a functional limitation compared to the bidirectional LTS 6-NP. This part is suitable only for designs where current flows in a single direction.

Q4: What packaging differences exist between substitute parts?

A: The LTS 6-NP, CAS 6-NP, LES 6-NP, and LXS 6-NPS utilize module-based packaging with through-hole mounting. The T60404N4647X663 uses a 10-DIP module package. Packaging differences affect PCB footprint, pin spacing, and mounting hole configuration. Physical compatibility must be verified before component substitution. Tray packaging is standard for active LEM USA Inc. products.

Q5: Are all substitute parts RoHS compliant?

A: Yes. The CAS 6-NP, LES 6-NP, and LXS 6-NPS are RoHS Compliant. The T60404N4647X663 is ROHS3 Compliant. All parts maintain REACH unaffected status (except T60404N4647X663, which is not specified). Regulatory compliance is maintained across all recommended substitutes.

Q6: What is the impact of supply voltage tolerance differences?

A: The LTS 6-NP specifies 5V nominal supply. Active substitutes (CAS 6-NP, LES 6-NP, LXS 6-NPS, T60404N4647X663) accept 4.75V ~ 5.25V supply voltage range. This expanded tolerance improves design robustness and accommodates power supply variations. Existing designs operating at 5V nominal will function with all substitute parts without modification.

Q7: How do response time differences affect system performance?

A: The LTS 6-NP specifies 0.4 µs response time. Substitutes offer faster response: CAS 6-NP (0.3 µs), LES 6-NP and LXS 6-NPS (400 ns), and T60404N4647X663 (300 ns). Faster response times enable more accurate measurement of rapidly changing currents and improve system bandwidth. For applications with slow current transients, response time differences are negligible. High-speed measurement applications benefit from faster alternatives.

Q8: What inventory status should be considered for procurement?

A: The LTS 6-NP is obsolete with 844 pieces in stock. Active alternatives have higher inventory availability: CAS 6-NP (1,641 pcs), LES 6-NP (927 pcs), LXS 6-NPS (914 pcs), and T60404N4647X663 (2,938 pcs). For long-term design support, active products are recommended to ensure sustained component availability and supply chain continuity.

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