A1384LLHLT-T Hall Effect Sensor Equivalent & Substitute Parts

Part Overview

The A1384LLHLT-T is a Hall Effect analog magnetic sensor manufactured by Allegro MicroSystems, designed for single-axis magnetic field detection with analog voltage output. This component is classified as Obsolete, making identification of functionally equivalent substitute parts essential for ongoing production support, design updates, and inventory management. The sensor operates within a 4.5V to 5.5V supply range and is housed in a surface-mount SOT-23W package, suitable for compact electronic assemblies requiring magnetic sensing capabilities.

Substiute Parts

A1384LLHLT-T

Allegro MicroSystemsIn Stock: 902A1384LLHLT-T Datasheet

Current PartRFQ

A1389LLHLT-9-T

Allegro MicroSystemsIn Stock: 1201A1389LLHLT-9-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A1384LLHLT-T is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Technology: Hall Effect
• Axis Configuration: Single
• Output Type: Analog Voltage
• Package / Case: SOT-23W
• Mounting Type: Surface Mount
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature Range: -40°C ~ 150°C

Allowable Variation Parameters:

• Current - Supply (Max): Substitute may equal or exceed the main part specification
• Current - Output (Max): Must match or exceed main part specification
• Bandwidth: Substitute may be equal to or lower than main part specification
• Features: Substitute may have fewer features than the main part

The A1389LLHLT-9-T qualifies as a direct substitute based on full alignment of all mandatory parameters and acceptable variation within allowable ranges.

Parameter Comparison

Engineering Selection Recommendations

The A1389LLHLT-9-T is a qualified substitute for the obsolete A1384LLHLT-T based on full parameter compatibility within defined allowable variations. Both components maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring regulatory and environmental consistency.

The substitute part exhibits higher maximum supply current (11.5mA versus 8mA) and lower bandwidth (20kHz versus 27kHz). These variations are within acceptable engineering tolerances for Hall Effect analog sensor applications where the primary functional requirement is single-axis magnetic field detection with analog voltage output in the specified supply voltage range.

The A1389LLHLT-9-T carries a product status of "Not For New Designs," indicating it represents a transitional solution. For long-term production planning, consultation with Allegro MicroSystems regarding current-generation Hall Effect sensor alternatives in SOT-23W packaging is advised.

Frequently Asked Questions (FAQ)

Q: Can the A1389LLHLT-9-T be used as a direct replacement for the A1384LLHLT-T in existing designs?

A: Yes. The substitute part matches all mandatory electrical and mechanical parameters, including supply voltage range, output type, package configuration, and operating temperature range. The higher supply current and lower bandwidth are acceptable variations for standard Hall Effect sensing applications.

Q: What is the significance of the higher supply current specification in the substitute part?

A: The A1389LLHLT-9-T specifies a maximum supply current of 11.5mA compared to 8mA for the main part. This indicates the substitute may draw more current under worst-case conditions. Circuit power supply design must accommodate this higher current requirement to ensure stable operation.

Q: Does the lower bandwidth of the A1389LLHLT-9-T affect sensor performance?

A: The substitute part operates at 20kHz bandwidth versus 27kHz for the main part. This reduction is acceptable for applications where magnetic field detection does not require response to frequencies above 20kHz. Applications requiring the full 27kHz bandwidth should be evaluated individually.

Q: Are both parts identical in package and mounting specifications?

A: Yes. Both the A1384LLHLT-T and A1389LLHLT-9-T use SOT-23W surface-mount packaging with identical pin configurations and footprints, allowing direct PCB layout compatibility without redesign.

Q: What is the difference between the main part and substitute part product status?

A: The A1384LLHLT-T is classified as Obsolete, indicating it is no longer manufactured. The A1389LLHLT-9-T is classified as "Not For New Designs," indicating limited availability and that it represents a transitional component. Both statuses indicate the need to identify current-generation alternatives for future production.