L18P040S05R Hall Effect Current Sensor - Equivalent & Substitute Parts

Part Overview

The L18P040S05R is an active Hall Effect current sensor manufactured by Tamura, designed for AC/DC current measurement applications. This open-loop, bidirectional module provides ratiometric voltage output for sensing currents up to 40A with a single measurement channel. The product is currently in active status with 797 units in stock.

Identifying equivalent and substitute parts is necessary when the primary part becomes unavailable, when design requirements change to accommodate different current ranges, or when supply chain optimization requires component standardization across product lines.

Substiute Parts

L18P040S05R

TamuraIn Stock: 845L18P040S05R Datasheet

Current PartRFQ

L18P020S05

TamuraIn Stock: 1110L18P020S05 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the L18P040S05R is determined by strict adherence to the following critical parameters:

Mandatory Matching Parameters:

• Manufacturer: Tamura
• Series: L18PXXXS05
• Sensor Type: Hall Effect, Open Loop
• Number of Channels: 1
• Output Type: Ratiometric, Voltage
• Frequency Response: DC ~ 100kHz
• Linearity: ±1%
• Supply Voltage: 5V
• Response Time: 5µs
• Maximum Supply Current: 15mA
• Operating Temperature Range: -30°C ~ 80°C
• Polarization: Bidirectional
• Mounting Type: Through Hole
• Package Type: Module

Variable Parameter (Allows Substitution):

• Current Sensing Range: The L18P040S05R (40A) can be substituted with the L18P020S05 (20A) only when the application's maximum current requirement does not exceed 20A.

The L18P020S05 maintains identical electrical characteristics, compliance certifications, and physical form factor while providing a reduced current measurement range.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (L18P040S05R): Select the L18P040S05R when the application requires current measurement up to 40A. This part is actively manufactured and maintains full RoHS compliance. Current inventory of 797 units supports immediate procurement.

Substitute Part Selection (L18P020S05): The L18P020S05 is a valid substitute only when the maximum current to be measured does not exceed 20A. Both parts share identical electrical performance characteristics, frequency response, linearity, and thermal operating range. The L18P020S05 carries ROHS3 compliance certification and maintains higher inventory availability at 1040 units.

Compliance Considerations: Both parts meet RoHS environmental compliance requirements. The L18P020S05 carries the more recent ROHS3 designation. Both parts are classified under ECCN EAR99 and HTSUS 9030.33.3800 for regulatory purposes.

Inventory and Supply Chain: When supply constraints affect the L18P040S05R, the L18P020S05 provides an alternative with superior stock availability. However, substitution is only valid when application current requirements permit the reduced 20A sensing range.

Frequently Asked Questions (FAQ)

Q: Can the L18P020S05 be used as a direct replacement for the L18P040S05R in all applications?

A: No. The L18P020S05 has a maximum current sensing range of 20A, compared to the L18P040S05R's 40A range. Substitution is only valid when the application's maximum current requirement does not exceed 20A. Using the L18P020S05 in a circuit designed for 40A operation will result in sensor saturation and measurement error.

Q: Are the physical dimensions and mounting characteristics identical between these parts?

A: Yes. Both the L18P040S05R and L18P020S05 use through-hole mounting, module package type, and are part of the same L18PXXXS05 series. They are mechanically interchangeable in terms of PCB footprint and mounting requirements.

Q: What is the difference between RoHS and ROHS3 compliance?

A: Both certifications indicate compliance with Restriction of Hazardous Substances regulations. ROHS3 represents the more recent version of the standard. Both parts meet environmental compliance requirements; ROHS3 is the updated designation.

Q: Do these sensors have identical electrical output characteristics?

A: Yes. Both parts provide ratiometric voltage output with ±1% linearity, 5V supply voltage, 5µs response time, and DC to 100kHz frequency response. The only difference is the current measurement range.

Q: Which part should be selected for new designs?

A: For new designs, select the part that matches your application's maximum current requirement. If the circuit measures currents up to 40A, use the L18P040S05R. If maximum current does not exceed 20A, either part is suitable; the L18P020S05 offers higher inventory availability.

Q: Are there any temperature or frequency limitations that differ between these parts?

A: No. Both parts operate identically across the -30°C to 80°C temperature range and support the full DC to 100kHz frequency response. Operating conditions are identical.

Q: What is the significance of the series designation L18PXXXS05?

A: The L18PXXXS05 series designation indicates these are Tamura Hall Effect current sensors with 5V supply voltage. The "XXX" represents the current range specification (040 for 40A, 020 for 20A). Parts within this series share common electrical and mechanical characteristics.