HAS 400-P Hall Effect Current Sensor 400A AC/DC Equivalent & Substitute Parts

Part Overview

The HAS 400-P is a Hall Effect open-loop bidirectional current sensor manufactured by LEM USA Inc., designed to measure AC/DC currents up to 400A. This sensor delivers ratiometric voltage output with ±1% linearity and accuracy across a frequency range of DC to 50kHz. The HAS 400-P is classified as "Not For New Designs," indicating it has been superseded in the product lifecycle. For applications requiring the HAS 400-P, equivalent substitute parts within the LEM HAS series provide identical electrical and mechanical performance with active product status and improved availability.

Key Parameters

Parameter	HAS 400-P Specification
Current Sensing Range	400A
Sensor Type	Hall Effect, Open Loop
Measurement Type	AC/DC Bidirectional
Output Type	Ratiometric, Voltage
Frequency Response	DC ~ 50kHz
Linearity	±1%
Accuracy	±1%
Supply Voltage	±15V
Response Time	3µs
Maximum Supply Current	15mA
Operating Temperature Range	-10°C ~ 80°C
Number of Channels	1
Mounting Type	Through Hole
Package Type	Module
RoHS Status	RoHS Compliant
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution within the LEM HAS series is determined by strict equivalence of electrical and mechanical parameters. The primary substitution criterion is current-sensing range compatibility. Parts are grouped into two categories:

Direct Equivalent (Same Current Rating): The HAS 400-S is a direct equivalent to the HAS 400-P. Both sensors measure 400A with identical electrical specifications: ±1% linearity, ±1% accuracy, DC to 50kHz frequency response, ±15V supply voltage, 3µs response time, and 15mA maximum supply current. The HAS 400-S differs only in product status (Active vs. Not For New Designs) and packaging variant designation (-S vs. -P). All other parameters—sensor type, output configuration, operating temperature, mounting, and compliance certifications—are identical.

Lower Current Range Alternatives (Reduced Sensing Capacity): The HAS 50-P, HAS 50-S, HAS 100-P, HAS 100-S, HAS 200-P, HAS 200-S, HAS 300-P, and HAS 300-S are lower-range current sensors within the same series. These parts maintain identical electrical performance characteristics (linearity, accuracy, frequency response, supply voltage, response time, and supply current) but are rated for 50A, 100A, 200A, and 300A respectively. Selection of lower-range alternatives is appropriate only when the application current requirement does not exceed the substitute part's rated sensing capacity.

Key Parameters Determining Substitution:

Current-Sensing Range (400A for direct equivalents; lower ranges for reduced-capacity alternatives)
Sensor Type (Hall Effect, Open Loop—constant across all parts)
Measurement Capability (AC/DC Bidirectional—constant across all parts)
Output Configuration (Ratiometric, Voltage—constant across all parts)
Electrical Performance (Linearity ±1%, Accuracy ±1%, Frequency DC~50kHz—constant across all parts)
Supply Requirements (±15V, 15mA max—constant across all parts)
Response Time (3µs—constant across all parts)
Operating Temperature (-10°C ~ 80°C—constant across all parts)
Mounting and Package (Through Hole Module—constant across all parts)

Parameter Comparison

Part Number	Manufacturer	Current Rating	Sensor Type	Measurement	Output	Frequency	Linearity	Accuracy	Supply Voltage	Response Time	Supply Current (Max)	Operating Temp	Mounting	Product Status	RoHS
HAS 400-P	LEM USA Inc.	400A	Hall Effect, Open Loop	AC/DC Bidirectional	Ratiometric, Voltage	DC ~ 50kHz	±1%	±1%	±15V	3µs	15mA	-10°C ~ 80°C	Through Hole	Not For New Designs	Compliant
HAS 400-S	LEM USA Inc.	400A	Hall Effect, Open Loop	AC/DC Bidirectional	Ratiometric, Voltage	DC ~ 50kHz	±1%	±1%	±15V	3µs	15mA	-10°C ~ 80°C	Through Hole	Active	Compliant
HAS 300-P	LEM USA Inc.	300A	Hall Effect, Open Loop	AC/DC Bidirectional	Ratiometric, Voltage	DC ~ 50kHz	±1%	±1%	±15V	3µs	15mA	-10°C ~ 80°C	Through Hole	Active	Compliant
HAS 300-S	LEM USA Inc.	300A	Hall Effect, Open Loop	AC/DC Bidirectional	Ratiometric, Voltage	DC ~ 50kHz	±1%	±1%	±15V	3µs	15mA	-10°C ~ 80°C	Through Hole	Active	Compliant
HAS 200-P	LEM USA Inc.	200A	Hall Effect, Open Loop	AC/DC Bidirectional	Ratiometric, Voltage	DC ~ 50kHz	±1%	±1%	±15V	3µs	15mA	-10°C ~ 80°C	Through Hole	Active	Compliant
HAS 200-S	LEM USA Inc.	200A	Hall Effect, Open Loop	AC/DC Bidirectional	Ratiometric, Voltage	DC ~ 50kHz	±1%	±1%	±15V	3µs	15mA	-10°C ~ 80°C	Through Hole	Active	Compliant
HAS 100-P	LEM USA Inc.	100A	Hall Effect, Open Loop	AC/DC Bidirectional	Ratiometric, Voltage	DC ~ 50kHz	±1%	±1%	±15V	3µs	15mA	-10°C ~ 80°C	Through Hole	Active	Compliant
HAS 100-S	LEM USA Inc.	100A	Hall Effect, Open Loop	AC/DC Bidirectional	Ratiometric, Voltage	DC ~ 50kHz	±1%	±1%	±15V	3µs	15mA	-10°C ~ 80°C	Through Hole	Active	Compliant
HAS 50-P	LEM USA Inc.	50A	Hall Effect, Open Loop	AC/DC Bidirectional	Ratiometric, Voltage	DC ~ 50kHz	±1%	±1%	±15V	3µs	15mA	-10°C ~ 80°C	Through Hole	Not For New Designs	Compliant
HAS 50-S	LEM USA Inc.	50A	Hall Effect, Open Loop	AC/DC Bidirectional	Ratiometric, Voltage	DC ~ 50kHz	±1%	±1%	±15V	3µs	15mA	-10°C ~ 80°C	Through Hole	Active	Compliant

Engineering Selection Recommendations

Primary Substitute: HAS 400-S

The HAS 400-S is the recommended direct substitute for the HAS 400-P. Both parts are electrically and mechanically identical with matching current-sensing capacity of 400A. The HAS 400-S carries Active product status, indicating ongoing manufacturing support and availability. Both parts are RoHS Compliant and REACH Unaffected, meeting current regulatory requirements. The HAS 400-S is suitable for all applications currently using the HAS 400-P without design modification.

Alternative Substitutes for Reduced Current Applications

When application requirements permit operation at reduced current levels, the following active-status alternatives are available:

HAS 300-P or HAS 300-S for applications requiring up to 300A sensing
HAS 200-P or HAS 200-S for applications requiring up to 200A sensing
HAS 100-P or HAS 100-S for applications requiring up to 100A sensing
HAS 50-S for applications requiring up to 50A sensing

All alternatives maintain identical electrical performance (±1% linearity, ±1% accuracy, DC to 50kHz frequency response) and identical supply requirements (±15V, 15mA maximum). Selection of lower-range parts is appropriate only when the maximum current in the application does not exceed the substitute part's rated sensing capacity.

Packaging Variant Selection (-P vs. -S)

Within each current rating, both -P and -S packaging variants are available. The -P variant is supplied in Tray packaging; the -S variant is also supplied in Tray packaging. Selection between -P and -S variants is determined by product status and availability requirements. Active-status variants (-S series) are preferred for new designs and ongoing production due to sustained manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can the HAS 400-S directly replace the HAS 400-P without circuit modification?

A: Yes. The HAS 400-S and HAS 400-P are electrically and mechanically identical. Both provide 400A current sensing with ±1% linearity, ±1% accuracy, DC to 50kHz frequency response, ±15V supply voltage, 3µs response time, and identical mounting configuration. No circuit modification is required.

Q: What is the difference between HAS 400-P and HAS 400-S?

A: The primary difference is product status. The HAS 400-P is classified as "Not For New Designs," while the HAS 400-S is Active. Both parts are electrically and mechanically identical. The -P and -S designations indicate packaging variants, but both are supplied in Tray packaging. The HAS 400-S is recommended for new applications due to its active lifecycle status.

Q: Can I use a HAS 300-P or HAS 300-S in place of the HAS 400-P?

A: The HAS 300-P and HAS 300-S are suitable substitutes only if your application current does not exceed 300A. These parts maintain identical electrical performance characteristics (linearity, accuracy, frequency response, supply voltage, response time) but are rated for 300A maximum sensing capacity. Using a lower-rated sensor in an application exceeding its current rating will result in measurement error and potential sensor damage.

Q: Are all HAS series sensors compatible with the same circuit design?

A: All HAS series sensors (50A, 100A, 200A, 300A, 400A) share identical electrical specifications for linearity (±1%), accuracy (±1%), frequency response (DC to 50kHz), supply voltage (±15V), response time (3µs), and maximum supply current (15mA). All use Hall Effect open-loop technology with ratiometric voltage output. All are through-hole mounted modules. Circuit designs are compatible across the series; selection is determined by the maximum current to be measured.

Q: What is the significance of the -P and -S packaging designations?

A: The -P and -S designations indicate packaging variants within the HAS series. Both variants are supplied in Tray packaging. The primary distinction is product lifecycle status: -P variants are classified as "Not For New Designs," while -S variants are Active. For new applications, -S variants are preferred due to sustained manufacturing support and availability.

Q: Are the HAS 400-P and HAS 400-S RoHS and REACH compliant?

A: Yes. Both the HAS 400-P and HAS 400-S are RoHS Compliant and REACH Unaffected, meeting current regulatory requirements for electronic components in regulated markets.

Q: What is the operating temperature range for HAS series sensors?

A: All HAS series sensors operate across the temperature range of -10°C to 80°C. This specification is constant across all current ratings (50A through 400A) and all packaging variants (-P and -S).

Q: Can HAS series sensors measure both AC and DC currents?

A: Yes. All HAS series sensors are bidirectional AC/DC current sensors. They measure both alternating and direct currents with identical accuracy and linearity specifications. The frequency response extends from DC to 50kHz, supporting both steady-state DC measurement and AC measurement up to 50kHz.

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