LEM USA Inc. HAIS 400-P Hall Effect Current Sensor - Equivalent & Substitute Parts

Part Overview

The HAIS 400-P is a Hall Effect open-loop bidirectional current sensor manufactured by LEM USA Inc., designed for AC/DC current measurement applications up to 400A. This component is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product roadmap. For applications requiring the HAIS 400-P, equivalent substitute parts from both the HAIS and HASS series are available to maintain design continuity and ensure supply chain flexibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	HAIS 400-P
Manufacturer	LEM USA Inc.
Series	HAIS
Sensor Type	Hall Effect, Open Loop
Current Sensing Range	400A
Number of Channels	1
Measurement Type	AC/DC
Output Type	Ratiometric, Voltage
Supply Voltage	5V
Frequency Range	DC ~ 50kHz
Linearity	±0.5%
Accuracy	±1%
Response Time	5µs
Supply Current (Max)	19mA
Operating Temperature Range	-40°C ~ 85°C
Polarization	Bidirectional
Mounting Type	Through Hole
Package Type	Module
Packaging Format	Tray
RoHS Status	RoHS Compliant
REACH Status	REACH Unaffected
Product Status	Not For New Designs

Substitute Part Grouping Explanation

Substitute parts for the HAIS 400-P are classified into two categories based on electrical and mechanical compatibility:

Category 1: HAIS Series Substitutes (Same Response Time - 5µs) Parts within the HAIS series maintain identical electrical characteristics including response time (5µs), frequency range (DC ~ 50kHz), linearity (±0.5%), accuracy (±1%), supply voltage (5V), and operating temperature range (-40°C ~ 85°C). These parts differ only in current sensing capacity. The HAIS series includes models rated for 50A, 100A, 150A, and 200A. Selection within this category depends on the maximum current requirement of the application.

Category 2: HASS Series Substitutes (Improved Response Time - 3µs) The HASS series represents an enhanced product line with superior response time performance (3µs versus 5µs). All other electrical parameters remain identical to the HAIS 400-P: frequency range (DC ~ 50kHz), linearity (±0.5%), accuracy (±1%), supply voltage (5V), and operating temperature range (-40°C ~ 85°C). HASS series models are available in 200A, 300A, and 400A ratings. The HASS 400-S provides direct functional equivalence to the HAIS 400-P with improved response characteristics.

Key Parameters Determining Substitution:

Current sensing capacity (50A, 100A, 150A, 200A, 300A, 400A)
Response time (5µs for HAIS; 3µs for HASS)
All other parameters remain constant across both series

Parameter Comparison

Part Number	Series	Current Rating	Response Time	Frequency Range	Linearity	Accuracy	Supply Voltage	Operating Temp	Inventory Status
HAIS 400-P	HAIS	400A	5µs	DC ~ 50kHz	±0.5%	±1%	5V	-40°C ~ 85°C	864 Pcs
HAIS 50-P	HAIS	50A	5µs	DC ~ 50kHz	±0.5%	±1%	5V	-40°C ~ 85°C	1393 Pcs
HAIS 50-TP	HAIS	50A	5µs	DC ~ 50kHz	±0.5%	±1%	5V	-40°C ~ 85°C	745 Pcs
HAIS 100-P	HAIS	100A	5µs	DC ~ 50kHz	±0.5%	±1%	5V	-40°C ~ 85°C	1388 Pcs
HAIS 100-TP	HAIS	100A	5µs	DC ~ 50kHz	±0.5%	±1%	5V	-40°C ~ 85°C	1039 Pcs
HAIS 150-P	HAIS	150A	5µs	DC ~ 50kHz	±0.5%	±1%	5V	-40°C ~ 85°C	1009 Pcs
HAIS 200-P	HAIS	200A	5µs	DC ~ 50kHz	±0.5%	±1%	5V	-40°C ~ 85°C	1703 Pcs
HASS 200-S	HASS	200A	3µs	DC ~ 50kHz	±0.5%	±1%	5V	-40°C ~ 85°C	9100 Pcs
HASS 300-S	HASS	300A	3µs	DC ~ 50kHz	±0.5%	±1%	5V	-40°C ~ 85°C	6728 Pcs
HASS 400-S	HASS	400A	3µs	DC ~ 50kHz	±0.5%	±1%	5V	-40°C ~ 85°C	4200 Pcs

Engineering Selection Recommendations

Direct Equivalent (Recommended for Existing Designs): The HASS 400-S provides direct functional equivalence to the HAIS 400-P with improved response time performance (3µs versus 5µs). Both parts maintain identical electrical specifications for frequency range, linearity, accuracy, supply voltage, and operating temperature. The HASS 400-S is suitable for applications where the HAIS 400-P was originally specified, with the added benefit of faster response characteristics. Inventory availability for HASS 400-S is 4200 units.

Alternative Selections Based on Current Requirements: For applications where the full 400A sensing capacity is not required, lower-rated HAIS series parts (50A, 100A, 150A, 200A) maintain identical response time and electrical characteristics. Selection should be based on the maximum current to be measured in the application circuit.

Series Transition Considerations: Both HAIS and HASS series parts are classified as "Not For New Designs." All substitute parts share identical RoHS Compliance, REACH Unaffected status, and ECCN/HTSUS classifications. Through-hole mounting and module package types are consistent across all listed substitutes. Supply current maximum (19mA) and bidirectional polarization are maintained across all alternatives.

Frequently Asked Questions (FAQ)

Q: Can the HASS 400-S replace the HAIS 400-P in existing circuit designs? A: Yes. The HASS 400-S maintains all electrical specifications of the HAIS 400-P (frequency range, linearity, accuracy, supply voltage, operating temperature) and provides improved response time (3µs versus 5µs). Through-hole mounting and module package compatibility are identical.

Q: What is the primary difference between HAIS and HASS series sensors? A: The HASS series provides faster response time (3µs) compared to the HAIS series (5µs). All other electrical parameters, including frequency range, linearity, accuracy, supply voltage, and operating temperature range, are identical between the two series.

Q: Can I use a lower current-rated sensor (e.g., HAIS 200-P) instead of the HAIS 400-P? A: A lower current-rated sensor can be used only if the maximum current in the application does not exceed the sensor's rating. The HAIS 200-P is rated for 200A maximum; using it in a circuit with 300A or 400A current would exceed its specification. Electrical characteristics (response time, frequency range, linearity, accuracy) remain identical across all HAIS current ratings.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed substitute parts (HAIS 50-P, HAIS 50-TP, HAIS 100-P, HAIS 100-TP, HAIS 150-P, HAIS 200-P, HASS 200-S, HASS 300-S, HASS 400-S) are RoHS Compliant and REACH Unaffected, matching the compliance status of the HAIS 400-P.

Q: What is the difference between HAIS 50-P and HAIS 50-TP packaging? A: Both HAIS 50-P and HAIS 50-TP are rated for 50A current sensing with identical electrical specifications. The designation difference (P versus TP) relates to packaging variant within the tray format. Both maintain through-hole mounting and module package type. Inventory availability differs: HAIS 50-P has 1393 units; HAIS 50-TP has 745 units.

Q: What is the operating frequency range for all substitute sensors? A: All substitute parts operate across the frequency range DC ~ 50kHz, identical to the HAIS 400-P specification.

Q: Are the supply voltage requirements the same for all substitute parts? A: Yes. All substitute parts require 5V supply voltage with maximum supply current of 19mA, matching the HAIS 400-P specification.

Q: What is the temperature operating range for these sensors? A: All substitute parts operate across the temperature range -40°C ~ 85°C, identical to the HAIS 400-P specification.

Q: Which substitute part has the highest inventory availability? A: The HASS 200-S has the highest inventory with 9100 units in stock. The HASS 400-S (direct 400A equivalent) has 4200 units available.

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