L18P050S12 Hall Effect Current Sensor - Equivalent & Substitute Parts

Part Overview

The L18P050S12 is an active Hall Effect current sensor manufactured by Tamura, designed for AC/DC current measurement applications requiring 50A sensing capability. This open-loop, bidirectional module operates at 12V supply voltage with ratiometric voltage output and is classified as an Active product. The sensor delivers a response time of 5µs across a frequency range of DC to 100kHz, making it suitable for industrial control, power management, and motor drive applications. Finding equivalent or substitute parts becomes necessary when addressing supply chain constraints, voltage requirement variations, or current range optimization for specific application requirements.

Substiute Parts

L18P050S12

TamuraIn Stock: 1074L18P050S12 Datasheet

Current PartRFQ

L18P020S05

TamuraIn Stock: 1110L18P020S05 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the L18P050S12 is limited to parts within the Tamura L18PXXXS series that maintain core functional equivalence. The primary substitution criterion is the preservation of Hall Effect open-loop sensing architecture with bidirectional measurement capability across the DC to 100kHz frequency band.

The L18P020S05 is identified as a parametric equivalent based on the following shared characteristics:

Preserved Parameters (Substitution Basis):

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

Differing Parameters (Application-Dependent):

• Current - Sensing: 50A (L18P050S12) vs. 20A (L18P020S05)
• Voltage - Supply: 12V (L18P050S12) vs. 5V (L18P020S05)
• Series Designation: L18PXXXS12 vs. L18PXXXS05

Substitution is valid only when the application current requirement does not exceed 20A and the system power supply is 5V. The identical frequency response, linearity, response time, and temperature range ensure functional compatibility within these electrical constraints.

Parameter Comparison

Engineering Selection Recommendations

Both the L18P050S12 and L18P020S05 maintain Active product status with full regulatory compliance. The L18P050S12 carries RoHS Compliance certification, while the L18P020S05 carries ROHS3 Compliance certification, indicating both parts meet current environmental and hazardous substance restrictions.

Selection between these parts is determined by application electrical requirements:

Select L18P050S12 when:

• Measured current range requires 50A sensing capability
• System power supply is 12V
• Application demands the full current measurement range of this sensor class

Select L18P020S05 when:

• Measured current does not exceed 20A
• System power supply is 5V
• Supply chain availability or cost optimization favors the lower current-rated variant
• Application operates within the 20A current sensing specification

Both parts deliver identical frequency response (DC to 100kHz), linearity (±1%), response time (5µs), and temperature operating range (-30°C to 80°C), ensuring equivalent signal conditioning performance within their respective current and voltage ratings.

Frequently Asked Questions (FAQ)

Q: Can the L18P020S05 directly replace the L18P050S12 in an existing design?

A: Direct replacement is possible only if the application current requirement does not exceed 20A and the system power supply voltage is 5V. The L18P020S05 cannot measure currents above 20A, and it requires a 5V supply instead of 12V. PCB layout and connector compatibility must also be verified, as both parts use Through Hole mounting in Module packages.

Q: What is the functional difference between these two sensors?

A: Both sensors use identical Hall Effect open-loop architecture with the same frequency response, linearity, response time, and temperature range. The primary differences are current sensing range (50A vs. 20A) and supply voltage (12V vs. 5V). The output is ratiometric voltage in both cases, meaning the output voltage scales proportionally with the supply voltage.

Q: Are there any compatibility issues with the packaging?

A: Both parts use Through Hole mounting and Module packaging. Physical dimensions and pin configurations should be verified against the specific application PCB layout, as the part number suffix (S12 vs. S05) indicates different voltage series within the L18PXXX family.

Q: Which part has better environmental compliance?

A: The L18P020S05 carries ROHS3 Compliant certification, representing the most current RoHS standard. The L18P050S12 carries RoHS Compliant certification. Both meet environmental and hazardous substance restrictions; the difference reflects the certification date or revision level of the standard applied at manufacture.

Q: Can I use the L18P050S12 in a 5V system?

A: No. The L18P050S12 is specified for 12V supply voltage operation. Using it with 5V supply will result in incorrect sensor output and potential device malfunction. The supply voltage directly affects the ratiometric output scaling.

Q: What happens if I measure current above 20A with the L18P020S05?

A: The L18P020S05 is rated for 20A maximum current sensing. Exceeding this specification will result in output saturation and loss of measurement accuracy. The sensor is not designed for overrange operation.