LTS 25-NP/SP4 Current Transducer Equivalent & Substitute Parts

Part Overview

The LTS 25-NP/SP4 is a 25A current transducer manufactured by LEM USA Inc., designed for AC/DC current measurement applications. This component is a Hall Effect, closed-loop bidirectional current sensor with a single pass-through configuration and ratiometric voltage output. The product is classified as obsolete, necessitating identification of active equivalent components to maintain system functionality and ensure continued availability for new designs and field replacements.

Substiute Parts

LTS 25-NP/SP4

LEM USA Inc.In Stock: 1082LTS 25-NP/SP4 Datasheet

Current PartRFQ

T60404N4646X651

VACUUMSCHMELZEIn Stock: 3309T60404N4646X651 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LTS 25-NP/SP4 is based on the following critical parameters that must align between the main part and substitute components:

Primary Matching Criteria:

• Current sensing capacity: 25A
• Sensor technology: Closed-loop configuration
• Output format: Ratiometric voltage output
• Number of channels: Single channel (1)
• Supply voltage range: 4.75V ~ 5.25V
• Frequency response: DC ~ 200kHz minimum
• Operating temperature range: -40°C ~ 85°C
• Mounting configuration: Through-hole technology
• Environmental compliance: RoHS compliance

The T60404N4646X651 from VACUUMSCHMELZE meets these core functional requirements as a 25A closed-loop current sensor with single-channel ratiometric voltage output, compatible supply voltage, and matching frequency and temperature specifications. Both components utilize through-hole mounting and maintain RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

The T60404N4646X651 is an active substitute for the obsolete LTS 25-NP/SP4 based on functional equivalence in core measurement parameters. Both components share identical current sensing capacity (25A), frequency response (DC ~ 200kHz), supply voltage specifications (4.75V ~ 5.25V), operating temperature range (-40°C ~ 85°C), and linearity performance (±0.1%).

Key Considerations for Selection:

The T60404N4646X651 demonstrates superior response time (300ns versus 400ns) and lower supply current consumption (15mA versus 28mA typical), providing performance advantages in dynamic measurement applications and power-constrained systems.

Accuracy specification differs between components: the LTS 25-NP/SP4 specifies ±0.2% accuracy while the T60404N4646X651 specifies ±0.7% accuracy. Applications requiring the tighter ±0.2% accuracy tolerance must evaluate whether the substitute's ±0.7% specification meets system requirements.

Polarization differs: the LTS 25-NP/SP4 is bidirectional while the T60404N4646X651 is unidirectional. Applications requiring bidirectional current measurement must confirm that unidirectional operation is acceptable for the intended use case.

Package configuration differs: the LTS 25-NP/SP4 uses a single pass-through module while the T60404N4646X651 uses a 9-DIP module. PCB layout and mechanical mounting must accommodate the different package footprints.

Both components maintain RoHS compliance (RoHS Compliant and ROHS3 Compliant respectively), satisfying environmental regulatory requirements. The T60404N4646X651 holds active product status with confirmed inventory availability, ensuring long-term supply continuity.

Frequently Asked Questions (FAQ)

Q: Can the T60404N4646X651 directly replace the LTS 25-NP/SP4 in existing designs?

A: Direct replacement requires verification of three factors: (1) PCB layout compatibility with the different package types (single pass-through module versus 9-DIP module), (2) acceptance of unidirectional polarization instead of bidirectional operation, and (3) confirmation that ±0.7% accuracy meets application requirements instead of ±0.2%.

Q: What is the primary difference in measurement capability between these components?

A: Both components measure 25A current with identical frequency response (DC ~ 200kHz) and linearity (±0.1%). The main functional difference is polarization: the LTS 25-NP/SP4 measures bidirectional current while the T60404N4646X651 measures unidirectional current only.

Q: Are the supply voltage requirements identical?

A: Yes. Both the LTS 25-NP/SP4 and T60404N4646X651 require supply voltage in the range of 4.75V ~ 5.25V, ensuring compatibility with standard 5V power supplies.

Q: How do the response times compare?

A: The T60404N4646X651 has a faster response time of 300ns compared to the LTS 25-NP/SP4 at 400ns. This 100ns improvement may be beneficial in applications requiring rapid current measurement updates.

Q: What are the power consumption differences?

A: The LTS 25-NP/SP4 draws a typical supply current of 28mA, while the T60404N4646X651 draws a maximum of 15mA. The substitute component consumes approximately 46% less current, reducing thermal load and power supply requirements.

Q: Are both components suitable for the same temperature range?

A: Yes. Both components operate across the identical temperature range of -40°C to 85°C, ensuring equivalent thermal performance in industrial and extended-temperature applications.

Q: What packaging considerations apply to substitution?

A: The LTS 25-NP/SP4 uses a single pass-through module configuration while the T60404N4646X651 uses a 9-DIP module. These different package types have different PCB footprints, pin spacing, and mounting hole patterns. PCB redesign or adapter solutions may be required for mechanical compatibility.

Q: How do the accuracy specifications affect measurement reliability?

A: The LTS 25-NP/SP4 specifies ±0.2% accuracy while the T60404N4646X651 specifies ±0.7% accuracy. Applications requiring measurement uncertainty below ±0.7% must evaluate whether the substitute meets system tolerance requirements. Both components maintain ±0.1% linearity.

Q: Is the T60404N4646X651 available for new designs?

A: Yes. The T60404N4646X651 holds active product status with 3255 pieces in stock, confirming availability for new designs and production quantities. The LTS 25-NP/SP4 is obsolete with no ongoing manufacturing.