LDSR 0.3-NP Current Sensor Equivalent & Substitute Parts

Part Overview

The LDSR 0.3-NP is a 3-phase leakage current detection module manufactured by LEM USA Inc. It functions as a Hall Effect closed-loop bidirectional current sensor with a 300mA sensing range and ratiometric voltage output. The product is Active status with 1113 units in stock. Alternative models become necessary when application requirements specify single-phase detection instead of three-phase capability, or when specific packaging or series variants are required for system integration.

Substiute Parts

LDSR 0.3-NP

LEM USA Inc.In Stock: 1203LDSR 0.3-NP Datasheet

Current PartRFQ

LDSR 0.3-TP/SP1

LEM USA Inc.In Stock: 988LDSR 0.3-TP/SP1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The LDSR 0.3-TP/SP1 qualifies as a parametric equivalent based on the following substitution criteria:

Identical Parameters:

• Current sensing range: 300mA
• Sensor technology: Hall Effect, Closed Loop
• Number of channels: 1
• Output type: Ratiometric, Voltage
• Sensitivity: 2.2V/A
• Frequency response: DC ~ 2kHz
• Supply voltage: 4.75V ~ 5.25V
• Response time: 300µs
• Maximum supply current: 20.5mA
• Operating temperature range: -40°C ~ 105°C (TA)
• Polarization: Bidirectional
• Mounting type: Through Hole
• Package type: Module
• RoHS compliance: RoHS Compliant
• Moisture sensitivity level: 1 (Unlimited)
• REACH status: REACH Unaffected

Distinguishing Feature: The primary difference is the series designation: LDSR-NP (3-phase leakage current detection) versus LDSR-TP (1-phase leakage current detection). This distinction reflects the intended application context rather than electrical or mechanical incompatibility at the component level.

Parameter Comparison

Engineering Selection Recommendations

Both the LDSR 0.3-NP and LDSR 0.3-TP/SP1 maintain Active product status with full RoHS compliance and REACH unaffected designation. Selection between these parts should be based on application phase requirements and system integration specifications. The LDSR 0.3-NP carries 1113 units in current inventory, while the LDSR 0.3-TP/SP1 has 896 units available. Both parts meet identical electrical and mechanical specifications for current sensing, output characteristics, and environmental operating conditions.

Frequently Asked Questions (FAQ)

Q: Can LDSR 0.3-TP/SP1 replace LDSR 0.3-NP in existing designs?

A: Yes, from an electrical and mechanical standpoint. All core parameters including current sensing range, output type, sensitivity, frequency response, supply voltage, operating temperature, and mounting configuration are identical. The substitution is valid when application requirements do not mandate three-phase detection capability.

Q: What is the difference between the NP and TP series designations?

A: The NP designation indicates 3-phase leakage current detection application context, while TP indicates 1-phase leakage current detection. This reflects the intended system application rather than differences in the sensor component itself.

Q: Are the packages identical?

A: Yes. Both parts use Through Hole mounting with Module package type, ensuring mechanical compatibility in PCB layouts.

Q: Do both parts meet the same compliance standards?

A: Yes. Both LDSR 0.3-NP and LDSR 0.3-TP/SP1 are RoHS Compliant, REACH Unaffected, with MSL rating of 1 (Unlimited).

Q: What is the sensitivity specification for both parts?

A: Both parts provide 2.2V/A sensitivity with ratiometric voltage output, ensuring identical signal conditioning characteristics.