A1183LLHLT-T Equivalent & Substitute Parts

Part Overview

The A1183LLHLT-T is a unipolar Hall Effect magnetic switch manufactured by Allegro MicroSystems, designed for automotive-grade applications requiring digital switching based on magnetic field detection. This component operates as a current source output device in a SOT-23W surface mount package. The part is classified as obsolete, making identification of equivalent and substitute components essential for design continuity and procurement planning. Active alternatives with compatible electrical and mechanical characteristics are available from Allegro MicroSystems and other qualified manufacturers.

Substiute Parts

A1183LLHLT-T

Allegro MicroSystemsIn Stock: 1547A1183LLHLT-T Datasheet

Current PartRFQ

A1193LLHLX-T

Allegro MicroSystemsIn Stock: 27089A1193LLHLX-T Datasheet

MFR RecommendedRFQ

TLE49761KHTSA1

Ampleon USA Inc.In Stock: 276546TLE49761KHTSA1 Datasheet

MFR RecommendedRFQ

TLE49762KHTSA1

Infineon TechnologiesIn Stock: 1100TLE49762KHTSA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A1183LLHLT-T is determined by the following critical parameters:

Primary Compatibility Criteria:

• Function: Unipolar Switch operation
• Technology: Hall Effect sensing
• Polarization: South Pole detection
• Output Type: Current Source configuration
• Package / Case: SOT-23W form factor
• Mounting Type: Surface Mount
• Grade: Automotive qualification
• Qualification: AEC-Q100 certification

Secondary Compatibility Parameters:

• Voltage Supply Range: Must encompass or overlap with 4.6V ~ 24V
• Operating Temperature Range: Must support -40°C ~ 150°C minimum
• RoHS Status: ROHS3 Compliant

The substitute parts listed below meet these core electrical and mechanical requirements, enabling direct functional replacement in automotive applications.

Parameter Comparison

Engineering Selection Recommendations

A1193LLHLX-T (Allegro MicroSystems)

This part is the primary recommended substitute. It maintains identical function, technology, polarization, and package specifications as the A1183LLHLT-T. Both components are manufactured by Allegro MicroSystems and share the same SOT-23W form factor. The A1193LLHLX-T is currently in active production status with high inventory availability. The voltage supply range (3V ~ 24V) encompasses the original specification. The reduced maximum supply current (6.9mA versus 17mA) represents a design improvement in power efficiency. Both parts carry AEC-Q100 automotive qualification and ROHS3 compliance.

TLE49762KHTSA1 (Infineon Technologies)

This part provides functional equivalence with compatible automotive-grade specifications and AEC-Q100 qualification. The voltage supply range (3V ~ 18V) overlaps the original specification within the 4.6V ~ 24V window. The maximum supply current matches the original at 17mA. The primary distinction is the output type: TLE49762KHTSA1 uses Open Collector configuration versus the original Current Source output. The package designation (TO-236-3, SC-59, SOT-23-3) is mechanically compatible with SOT-23W footprints. This part is suitable for applications where Open Collector output can be accommodated in the circuit design.

TLE49761KHTSA1 (Ampleon USA Inc.)

Limited technical specification data is provided for this part. It is classified as a Digital Switch with Hall Effect technology and South Pole polarization, meeting core functional requirements. This part is in active production status. Detailed electrical parameters (voltage supply range, current ratings, output type) are not specified in available documentation and must be verified against application requirements before selection.

Frequently Asked Questions (FAQ)

Q: Can A1193LLHLX-T directly replace A1183LLHLT-T in existing designs?

A: Yes. Both parts share identical function (Unipolar Switch), technology (Hall Effect), polarization (South Pole), output type (Current Source), package (SOT-23W), and automotive qualification (AEC-Q100). The A1193LLHLX-T is the manufacturer-recommended substitute and is currently in active production.

Q: What is the significance of the output type difference between A1183LLHLT-T and TLE49762KHTSA1?

A: The A1183LLHLT-T uses Current Source output, while TLE49762KHTSA1 uses Open Collector output. These represent different circuit interface topologies. Current Source output sources current from the device, while Open Collector output sinks current to ground. Circuit redesign may be required to accommodate this difference, depending on the application's pull-up or pull-down configuration.

Q: Are all substitute parts automotive-grade?

A: Yes. All listed substitute parts carry Automotive grade classification and AEC-Q100 qualification, meeting the same automotive standards as the original A1183LLHLT-T.

Q: What is the impact of the reduced supply current in A1193LLHLX-T?

A: The A1193LLHLX-T maximum supply current is 6.9mA compared to 17mA in the A1183LLHLT-T. This represents improved power efficiency and reduced thermal dissipation. For applications where the original 17mA specification was not fully utilized, this reduction has no functional impact. Applications requiring higher current draw should verify compatibility with circuit design parameters.

Q: Is the voltage supply range difference between substitutes significant?

A: The A1183LLHLT-T operates at 4.6V ~ 24V, while TLE49762KHTSA1 operates at 3V ~ 18V. The lower minimum voltage (3V) in TLE49762KHTSA1 provides broader low-voltage compatibility. The reduced maximum voltage (18V versus 24V) may be limiting in applications requiring operation above 18V. Verify the application's actual supply voltage range before selection.

Q: What packaging format is recommended for new procurement?

A: A1193LLHLX-T is available in Tape & Reel (TR) packaging, which is standard for high-volume manufacturing and automated assembly. TLE49762KHTSA1 is available in Tape & Reel (TR) packaging. Both formats are suitable for surface mount assembly processes.