L18P040S05 Equivalent & Substitute Parts Reference

Part Overview

The L18P040S05 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 with a 40A sensing range and operates across a frequency spectrum from DC to 100kHz. The component is classified as Active product status with full RoHS3 compliance, making it suitable for industrial and commercial measurement systems requiring galvanic isolation and bidirectional current detection.

Substitute parts are identified when equivalent electrical and mechanical parameters align within the allowed specifications for this product category, enabling direct functional replacement in circuit designs where the primary performance criteria remain satisfied.

Substiute Parts

L18P040S05

TamuraIn Stock: 1137L18P040S05 Datasheet

Current PartRFQ

L18P020S05

TamuraIn Stock: 1110L18P020S05 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts within the L18PXXXS05 series are identified based on strict alignment of the following critical parameters:

Mandatory Matching Parameters:

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

Variable Parameter (Allows Substitution):

• Current Sensing Range: Different rated values within the series

The L18P020S05 qualifies as a parametric equivalent because it maintains all mandatory electrical and mechanical characteristics while offering a reduced current sensing capacity of 20A instead of 40A. This substitution is valid for applications where the maximum current measurement requirement does not exceed 20A.

Parameter Comparison

Engineering Selection Recommendations

L18P040S05 Primary Selection Criteria:

• Applications requiring current measurement up to 40A
• Systems with bidirectional current flow detection requirements
• Designs operating within DC to 100kHz frequency spectrum
• Circuits utilizing 5V supply voltage with maximum 15mA draw from the sensor
• Operating environments spanning -30°C to 80°C temperature range
• Through-hole mounting configurations on PCB assemblies
• RoHS compliance mandatory for end-product certification

L18P020S05 Substitute Selection Criteria:

• Applications where maximum current measurement does not exceed 20A
• Identical electrical performance and response characteristics required
• Same frequency response and temperature operating range acceptable
• Through-hole mounting compatibility required
• ROHS3 compliance certification required
• Active product status with full manufacturer support

Both parts maintain Active product status with current manufacturer support and inventory availability. The L18P020S05 provides enhanced RoHS3 compliance certification compared to the base RoHS compliance of the L18P040S05. Selection between these parts is determined solely by the maximum current measurement requirement of the application circuit.

Frequently Asked Questions (FAQ)

Q: Can L18P020S05 replace L18P040S05 in all applications?

A: No. The L18P020S05 is a valid substitute only for applications where the maximum current to be measured does not exceed 20A. If your circuit requires measurement of currents above 20A, the L18P040S05 must be used. Both parts share identical electrical characteristics, frequency response, supply voltage, and operating temperature range.

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

A: Both designations indicate compliance with Restriction of Hazardous Substances regulations. ROHS3 represents the current version of the standard. Both the L18P040S05 and L18P020S05 meet hazardous substance restrictions. The ROHS3 designation on the L18P020S05 indicates compliance with the latest regulatory version.

Q: Are the mounting footprints identical between L18P040S05 and L18P020S05?

A: Yes. Both parts are Through Hole mounted modules within the L18PXXXS05 series and share identical mechanical mounting characteristics, allowing direct PCB footprint compatibility.

Q: What is the output voltage relationship to measured current?

A: Both sensors provide ratiometric voltage output. The output scales proportionally to the measured current within the rated sensing range. For the L18P040S05, the full-scale output corresponds to 40A; for the L18P020S05, full-scale output corresponds to 20A. Both maintain ±1% linearity across their respective ranges.

Q: Can these sensors measure AC and DC current simultaneously?

A: Yes. Both L18P040S05 and L18P020S05 are rated for AC/DC current measurement. The frequency response extends from DC to 100kHz, enabling measurement of both direct current and alternating current within this bandwidth.

Q: What is the response time specification, and why is it important?

A: Both sensors have a 5µs response time, indicating the time required for the output to settle to the measured current value. This specification is critical for applications requiring fast current transient detection or high-speed control loop feedback.

Q: Are these sensors suitable for bidirectional current measurement?

A: Yes. Both L18P040S05 and L18P020S05 are specified as bidirectional sensors, enabling measurement of current flow in both directions. This is essential for applications with reversible current paths or regenerative systems.

Q: What supply voltage is required, and what is the maximum current draw?

A: Both sensors require a 5V supply voltage with a maximum current draw of 15mA. This specification is important for power budget calculations in the host system.

Q: Are these parts currently available from the manufacturer?

A: Yes. Both L18P040S05 and L18P020S05 maintain Active product status with the manufacturer, indicating current production and full technical support availability.