LTS 6-NP/SP4 Current Transducer Equivalent & Substitute Parts

Part Overview

The LTS 6-NP/SP4 is a 6A current transducer manufactured by LEM USA Inc., designed for AC/DC current measurement applications. This Hall Effect, closed-loop bidirectional sensor operates across a frequency range of DC to 200kHz with a single pass-through channel configuration. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Current Sensing Range	6A
Sensor Type	Hall Effect, Closed Loop
Number of Channels	1
Output Type	Ratiometric, Voltage
Frequency Range	DC ~ 200kHz
Linearity	±0.1%
Accuracy	±0.2%
Supply Voltage	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C
Polarization	Bidirectional
Mounting Type	Through Hole
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the LTS 6-NP/SP4 is based on the following critical parameters that must align between the main part and substitute candidates:

Primary Matching Criteria:

Current sensing capacity of 6A
Closed-loop sensor technology
Single channel configuration
Ratiometric voltage output
Frequency range DC ~ 200kHz
Supply voltage range 4.75V ~ 5.25V
Operating temperature range -40°C ~ 85°C
Through-hole mounting capability

Secondary Compatibility Factors:

Linearity specification ±0.1%
Accuracy tolerance
Response time performance
RoHS compliance status

The T60404N4647X663 from VACUUMSCHMELZE meets the primary matching criteria with equivalent current sensing, closed-loop technology, single-channel output, and identical frequency and supply voltage specifications. Both parts maintain the required operating temperature range and through-hole mounting configuration.

Parameter Comparison

Parameter	LTS 6-NP/SP4 (Main)	T60404N4647X663 (Substitute)	Match Status
Manufacturer	LEM USA Inc.	VACUUMSCHMELZE	Different
Current Sensing	6A	6A	Equivalent
Sensor Type	Hall Effect, Closed Loop	Closed Loop	Compatible
Number of Channels	1	1	Equivalent
Output Type	Ratiometric, Voltage	Ratiometric, Voltage	Equivalent
Sensitivity	104.16mV/A	Not Specified	Not Comparable
Frequency Range	DC ~ 200kHz	DC ~ 200kHz	Equivalent
Linearity	±0.1%	±0.1%	Equivalent
Accuracy	±0.2%	±0.7%	Substitute Wider Tolerance
Supply Voltage	4.75V ~ 5.25V	4.75V ~ 5.25V	Equivalent
Response Time	400ns	300ns	Substitute Faster
Current Supply (Max)	28mA (Typ)	15mA	Substitute Lower
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Equivalent
Polarization	Bidirectional	Unidirectional	Different
Mounting Type	Through Hole	Through Hole	Equivalent
Package Type	Module, Single Pass Through	10-DIP Module	Different Form Factor
Product Status	Obsolete	Active	Substitute Available
RoHS Status	RoHS Compliant	ROHS3 Compliant	Both Compliant

Engineering Selection Recommendations

The T60404N4647X663 from VACUUMSCHMELZE serves as a functional substitute for the obsolete LTS 6-NP/SP4 based on the following engineering factors:

Compliance and Availability: The substitute part maintains active product status with 2938 units in stock, compared to the obsolete status of the main part. Both components are RoHS compliant, with the substitute meeting ROHS3 specifications and carrying EAR99 export classification.

Electrical Equivalence: Both parts operate at identical 6A current sensing capacity, maintain the same DC to 200kHz frequency range, and require identical 4.75V to 5.25V supply voltage. The ratiometric voltage output configuration is preserved across both designs.

Performance Characteristics: The substitute demonstrates superior response time performance at 300ns compared to the main part's 400ns specification. Supply current consumption is reduced to 15mA from the typical 28mA of the main part. Linearity remains equivalent at ±0.1% for both components.

Tolerance Considerations: The substitute part specifies ±0.7% accuracy compared to the main part's ±0.2% accuracy. This represents a wider tolerance band that must be evaluated against system-level accuracy requirements.

Mechanical and Functional Differences: The substitute employs a 10-DIP module package configuration versus the single pass-through module of the main part. The substitute operates as a unidirectional sensor, whereas the main part provides bidirectional measurement capability. These differences require physical integration assessment and application-specific current direction evaluation.

Frequently Asked Questions (FAQ)

Q: Can the T60404N4647X663 directly replace the LTS 6-NP/SP4 in existing designs?

A: Direct replacement requires evaluation of three factors: package form factor compatibility (10-DIP module versus single pass-through), unidirectional versus bidirectional measurement requirements, and the wider ±0.7% accuracy specification of the substitute. Physical mounting and current direction capability must be confirmed for the specific application.

Q: What are the key electrical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by matching current sensing capacity (6A), closed-loop sensor technology, single-channel configuration, ratiometric voltage output, frequency range (DC to 200kHz), and supply voltage specifications (4.75V to 5.25V). Both parts meet these primary criteria.

Q: How does the accuracy difference between ±0.2% and ±0.7% affect system performance?

A: The substitute part's wider accuracy tolerance of ±0.7% compared to the main part's ±0.2% represents a 3.5-fold increase in maximum permissible error. System-level accuracy requirements must be evaluated to determine if this tolerance band is acceptable for the intended application.

Q: What is the significance of bidirectional versus unidirectional polarization?

A: The main part measures current flow in both directions (bidirectional), while the substitute measures current in one direction only (unidirectional). Applications requiring measurement of alternating or reversing current flow must retain bidirectional capability or implement alternative measurement strategies.

Q: Are there packaging considerations for PCB integration?

A: Yes. The main part uses a single pass-through module package, while the substitute employs a 10-DIP module configuration. These different form factors require different PCB footprints and mounting hole patterns. Physical layout compatibility must be verified before implementation.

Q: Do both parts meet current environmental and compliance standards?

A: Both parts are RoHS compliant. The main part meets RoHS specifications, while the substitute meets ROHS3 specifications, representing a more recent compliance standard. Both parts operate across the identical -40°C to 85°C temperature range.

Q: What is the inventory status for each part?

A: The main part (LTS 6-NP/SP4) is obsolete with 1170 units in stock. The substitute (T60404N4647X663) is active with 2938 units in stock, providing greater long-term availability assurance.

Q: How do response time specifications compare?

A: The substitute part responds faster at 300ns compared to the main part's 400ns response time. This 100ns improvement may provide benefits in high-speed measurement applications but does not represent a limitation for the main part in standard applications.

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