L18P050D15 Hall Effect Current Sensor - Equivalent & Substitute Parts

Part Overview

The L18P050D15 is a 50A Hall Effect open-loop bidirectional current sensor manufactured by Tamura, designed for AC/DC current measurement applications. This component operates across a frequency range of DC to 100kHz with a response time of 5µs and ±1% linearity. The part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing system support and new design implementations.

The L18P050D15 series utilizes ratiometric voltage output with ±15V dual supply operation, suitable for through-hole mounting in module form factor. RoHS compliance and EAR99 export classification confirm its suitability for industrial and commercial applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	L18P050D15
Manufacturer	Tamura
Product Status	Obsolete
Sensor Type	Hall Effect, Open Loop
Current Sensing Range	50A
Number of Channels	1
Output Type	Ratiometric, Voltage
Measurement Type	AC/DC
Frequency Range	DC ~ 100kHz
Linearity	±1%
Supply Voltage	±15V
Response Time	5µs
Maximum Supply Current	15mA
Operating Temperature Range	-30°C ~ 80°C
Polarization	Bidirectional
Mounting Type	Through Hole
Package Type	Module
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the L18P050D15 is determined by the following critical parameters:

Primary Substitution Criteria:

Sensor type (Hall Effect, Open Loop)
Output configuration (Ratiometric, Voltage)
Measurement capability (AC/DC bidirectional)
Supply voltage compatibility (±15V nominal)
Response time (5µs)
Linearity specification (±1%)
Operating temperature range (-30°C ~ 80°C)
Mounting type (Through Hole, Module form factor)

Current Sensing Range Consideration: The L18P050D15 is rated for 50A sensing. Substitute parts are available in lower current ratings (3A, 5A, 10A, 25A) for applications requiring reduced current measurement capacity. These lower-rated variants maintain identical electrical characteristics, supply requirements, response time, and linearity specifications, making them suitable for designs where the full 50A range is not required.

Active vs. Obsolete Status: The primary recommended substitute is L18P050D15-OP, which is the active production variant of the same 50A sensor. This part maintains the core 50A specification while offering improved supply voltage range (±12V ~ 15V) and slightly higher maximum supply current (18mA vs. 15mA).

Parameter Comparison

Parameter	L18P050D15	L18P050D15-OP	L18P025D15	L18P010D15	L18P005D15	L18P003D15
Manufacturer	Tamura	Tamura	Tamura	Tamura	Tamura	Tamura
Product Status	Obsolete	Active	Obsolete	Obsolete	Obsolete	Obsolete
Current Sensing (A)	50	50	25	10	5	3
Sensor Type	Hall Effect, Open Loop	Hall Effect, Open Loop	Hall Effect, Open Loop	Hall Effect, Open Loop	Hall Effect, Open Loop	Hall Effect, Open Loop
Number of Channels	1	1	1	1	1	1
Output Type	Ratiometric, Voltage	Ratiometric, Voltage	Ratiometric, Voltage	Ratiometric, Voltage	Ratiometric, Voltage	Ratiometric, Voltage
Measurement Type	AC/DC	AC/DC	AC/DC	AC/DC	AC/DC	AC/DC
Frequency Range	DC ~ 100kHz	Not specified	DC ~ 100kHz	DC ~ 100kHz	DC ~ 100kHz	DC ~ 100kHz
Linearity	±1%	±1%	±1%	±1%	±1%	±1%
Supply Voltage	±15V	±12V ~ 15V	±15V	±15V	±15V	±15V
Response Time	5µs	5µs	5µs	5µs	5µs	5µs
Maximum Supply Current	15mA	18mA	15mA	15mA	15mA	15mA
Operating Temperature	-30°C ~ 80°C	-30°C ~ 80°C (TA)	-30°C ~ 80°C	-30°C ~ 80°C	-30°C ~ 80°C	-30°C ~ 80°C
Polarization	Bidirectional	Bidirectional	Bidirectional	Bidirectional	Bidirectional	Bidirectional
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package Type	Module	Module	Module	Module	Module	Module
RoHS Status	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant

Engineering Selection Recommendations

Direct Replacement (Same Current Rating):

The L18P050D15-OP is the recommended direct substitute for the obsolete L18P050D15. Both components maintain the 50A current sensing specification and identical electrical performance characteristics. The L18P050D15-OP offers active product status with improved supply voltage tolerance (±12V ~ 15V versus ±15V) and marginally higher supply current capability (18mA versus 15mA). This part is available in Tray packaging and carries ROHS3 compliance certification, providing enhanced environmental compliance over the original RoHS specification.

Parametric Equivalents (Reduced Current Rating):

For applications where the full 50A sensing range is not required, the following parametric equivalents maintain all critical electrical and mechanical characteristics:

L18P025D15: 25A current sensing capacity
L18P010D15: 10A current sensing capacity
L18P005D15: 5A current sensing capacity
L18P003D15: 3A current sensing capacity

These parts are suitable only when the application current measurement requirement does not exceed their respective ratings. All maintain ±1% linearity, 5µs response time, ±15V supply operation, and identical frequency response (DC ~ 100kHz).

Compliance Considerations:

All substitute parts maintain RoHS compliance. The L18P050D15-OP provides enhanced ROHS3 certification. All parts carry EAR99 export classification and are suitable for industrial and commercial deployment without additional regulatory constraints.

Frequently Asked Questions (FAQ)

Q: Can L18P050D15-OP be used as a direct replacement for L18P050D15?

A: Yes. The L18P050D15-OP is the active production equivalent of the obsolete L18P050D15. Both maintain 50A current sensing, ±1% linearity, 5µs response time, and identical supply voltage operation. The -OP variant offers improved supply voltage tolerance and higher supply current capability, making it functionally superior for new designs and ongoing support applications.

Q: What is the difference between the L18P050D15 and lower-rated variants like L18P025D15?

A: The primary difference is current sensing range. The L18P050D15 measures up to 50A, while L18P025D15 measures up to 25A. All other electrical parameters—linearity (±1%), response time (5µs), supply voltage (±15V), frequency response (DC ~ 100kHz), and operating temperature (-30°C ~ 80°C)—remain identical. Lower-rated variants are suitable only for applications where the maximum current measurement requirement does not exceed their respective ratings.

Q: Are there packaging differences between substitute parts?

A: Yes. The L18P050D15 is supplied in Bulk packaging, while L18P050D15-OP is supplied in Tray packaging. Lower-rated variants (L18P025D15, L18P010D15, L18P005D15, L18P003D15) are supplied in Bulk packaging. All parts maintain identical through-hole module form factor and mounting compatibility.

Q: What is the significance of the -OP designation?

A: The -OP suffix indicates the active production variant within the L18PXXXD15 series. Parts without the -OP designation are classified as obsolete. The -OP variant incorporates improved supply voltage tolerance (±12V ~ 15V) and represents the current manufacturing standard for this sensor family.

Q: Can L18P003D15 or L18P005D15 be used in place of L18P050D15?

A: Only if the application current measurement requirement does not exceed 3A or 5A respectively. These parts are parametric equivalents with identical electrical characteristics but reduced current sensing capacity. Using an undersized current sensor may result in measurement saturation or inaccuracy if actual circuit currents exceed the sensor's rated range.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts carry RoHS compliance certification. The L18P050D15-OP provides enhanced ROHS3 certification, representing the latest environmental compliance standard.

Q: What is the frequency response limitation for these sensors?

A: The L18P050D15 and all lower-rated variants (except L18P050D15-OP, which does not specify frequency) operate across DC to 100kHz. This frequency range is suitable for industrial power monitoring, motor control, and general-purpose AC/DC current measurement applications. Applications requiring frequency response beyond 100kHz require alternative sensor architectures.

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