L18P025D15 Hall Effect Current Sensor - Equivalent & Substitute Parts

Part Overview

The L18P025D15 is a Hall Effect open-loop bidirectional current sensor manufactured by Tamura, designed for AC/DC current measurement applications up to 25A. This component features ratiometric voltage output, a single measurement channel, and operates across a frequency range of DC to 100kHz with ±1% linearity.

The L18P025D15 is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this sensor topology.

Key Parameters

Parameter	Value
Manufacturer Part Number	L18P025D15
Manufacturer	Tamura
Sensor Type	Hall Effect, Open Loop
Current Sensing Range	25A
Number of Channels	1
Output Type	Ratiometric, Voltage
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
Product Status	Obsolete
RoHS Compliance	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the L18P025D15 is determined by the following critical parameters:

Primary Substitution Criteria:

Sensor Type: Hall Effect, Open Loop
Output Type: Ratiometric, Voltage
Number of Channels: 1
Polarization: Bidirectional
Mounting Type: Through Hole
Package Type: Module
Linearity: ±1%
Response Time: 5µs
Operating Temperature Range: -30°C ~ 80°C
RoHS Compliance: RoHS Compliant

Current Sensing Range Consideration: The L18P025D15 measures up to 25A. Substitute parts are grouped by their current sensing capability. Parts with lower current ratings (3A, 5A, 10A) function as parametric equivalents for applications requiring reduced current measurement ranges. Parts with identical 25A ratings provide direct functional replacement.

Supply Voltage Consideration: The main part operates at ±15V. Substitute parts operating at ±12V ~ 15V (variable supply range) remain compatible with ±15V supply specifications.

Parameter Comparison

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

Engineering Selection Recommendations

Direct Replacement (25A Current Rating):

The L18P025D15-OP is the manufacturer-recommended substitute for the L18P025D15. Both parts maintain identical 25A current sensing capability, ±1% linearity, 5µs response time, and bidirectional Hall Effect open-loop topology. The L18P025D15-OP is classified as Active product status, ensuring ongoing availability and supply chain support. The L18P025D15-OP operates at ±12V ~ 15V supply voltage (compatible with ±15V systems) and exhibits marginally higher maximum supply current (18mA versus 15mA). Packaging differs (Tray versus Bulk), which may affect procurement and handling procedures.

Parametric Equivalents (Reduced Current Ratings):

The L18P010D15, L18P005D15, and L18P003D15 are parametric equivalents suitable for applications requiring current measurement below 25A. These parts share identical sensor topology, output characteristics, response time, operating temperature range, and RoHS compliance with the main part. Selection among these lower-rated alternatives depends on the maximum current to be measured in the target application:

L18P010D15: Applications measuring up to 10A
L18P005D15: Applications measuring up to 5A
L18P003D15: Applications measuring up to 3A

All parametric equivalents are classified as Obsolete, consistent with the main part status.

Compliance and Certification:

All listed parts maintain RoHS Compliance and operate within the -30°C ~ 80°C temperature range, supporting equivalent environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the L18P025D15-OP directly replace the L18P025D15 in existing designs?

A: Yes. The L18P025D15-OP provides direct functional replacement. Both parts feature identical 25A current sensing, ±1% linearity, 5µs response time, and bidirectional Hall Effect open-loop architecture. The L18P025D15-OP operates at ±12V ~ 15V (compatible with ±15V supply systems) and is classified as Active product status, ensuring continued availability.

Q: What is the difference between the main part and parametric equivalents?

A: Parametric equivalents (L18P010D15, L18P005D15, L18P003D15) differ only in current sensing range. All other electrical and mechanical parameters—sensor type, output characteristics, response time, operating temperature, and mounting configuration—remain identical. Selection depends on the maximum current to be measured in the application.

Q: Can a lower-rated current sensor substitute for the L18P025D15 in a 25A application?

A: No. Current sensors are rated for specific maximum measurement ranges. Using a 10A, 5A, or 3A sensor in a 25A application would exceed the sensor's measurement capability and produce inaccurate or saturated output. Select the substitute based on actual application current requirements.

Q: Are there packaging differences between substitute parts?

A: Yes. The L18P025D15 is supplied in Bulk packaging, while the L18P025D15-OP is supplied in Tray packaging. Both are Through Hole Module packages suitable for identical mounting procedures. Packaging selection may affect procurement quantities, handling, and storage procedures.

Q: Do all substitute parts maintain RoHS compliance?

A: Yes. All listed substitute parts are RoHS Compliant, meeting equivalent environmental and regulatory requirements for the L18P025D15.

Q: What is the significance of product status (Obsolete versus Active)?

A: Product status indicates lifecycle phase. The L18P025D15-OP is classified as Active, indicating current manufacturing and ongoing supply chain support. Obsolete parts (L18P025D15, L18P010D15, L18P005D15, L18P003D15) are no longer in active production. For new designs or long-term supply assurance, the Active L18P025D15-OP is the preferred selection.

Q: Are there frequency response differences between the main part and substitutes?

A: The L18P025D15 specifies DC ~ 100kHz frequency range. The L18P025D15-OP does not specify frequency range in the provided data. The parametric equivalents (L18P010D15, L18P005D15, L18P003D15) all specify DC ~ 100kHz. For applications requiring confirmed frequency response specifications, verify L18P025D15-OP frequency characteristics with the manufacturer.

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