A1183LLHLT Equivalent & Substitute Parts

Part Overview

The A1183LLHLT is a unipolar Hall Effect magnetic switch manufactured by Allegro MicroSystems, designed for automotive-grade applications with AEC-Q100 qualification. This component operates as a digital switch with current source output, featuring a programmable trip point and operating range of 4.6V to 24V supply voltage. The part is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement continuity.

Substiute Parts

A1183LLHLT

Allegro MicroSystemsIn Stock: 1255A1183LLHLT Datasheet

Current PartRFQ

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 of the A1183LLHLT is determined by the following critical parameters:

• Technology: Hall Effect magnetic sensing
• Function: Unipolar switch operation with South Pole polarization
• Supply Voltage Range: 4.6V to 24V compatibility
• Maximum Supply Current: 17mA maximum
• Operating Temperature Range: -40°C to 150°C
• Automotive Grade: AEC-Q100 qualification required
• Mounting: Surface mount configuration
• Output Characteristics: Current source or equivalent switching output

The identified substitutes maintain these core functional and electrical parameters while accommodating package variations and output type differences where electrically compatible.

Parameter Comparison

Engineering Selection Recommendations

TLE49762KHTSA1 (Infineon Technologies) is the primary substitute for the A1183LLHLT. This part maintains active product status, carries AEC-Q100 automotive qualification, and operates within the same temperature range (-40°C to 150°C). The supply voltage range of 3V to 18V overlaps the lower to mid-range of the original part's 4.6V to 24V specification. Maximum supply current remains at 17mA. The output type differs from current source to open collector, which requires circuit-level evaluation for compatibility. The package designation (TO-236-3, SC-59, SOT-23-3) is mechanically compatible with SOT-23W footprints. ROHS3 compliance provides environmental advantage over the non-compliant original part.

TLE49761KHTSA1 (Ampleon USA Inc.) is listed as an alternative substitute with active product status. Detailed electrical parameters are not provided in the specification data, limiting direct parameter comparison. This part should be evaluated only when TLE49762KHTSA1 is unavailable or when specific application requirements necessitate alternative sourcing.

Frequently Asked Questions (FAQ)

Q: Can TLE49762KHTSA1 directly replace A1183LLHLT in existing designs?

A: TLE49762KHTSA1 is electrically compatible for applications operating within the 3V to 18V supply range. The output type change from current source to open collector requires circuit verification. Package compatibility is confirmed for SOT-23W footprints.

Q: What is the voltage compatibility concern between A1183LLHLT and TLE49762KHTSA1?

A: The original part supports 4.6V to 24V supply voltage, while TLE49762KHTSA1 operates from 3V to 18V. Applications requiring supply voltages above 18V cannot use TLE49762KHTSA1 without circuit redesign.

Q: Are both substitute parts automotive-qualified?

A: TLE49762KHTSA1 carries AEC-Q100 qualification matching the original part. TLE49761KHTSA1 qualification status is not specified in available data.

Q: What is the significance of the output type difference?

A: The A1183LLHLT uses current source output, while TLE49762KHTSA1 uses open collector output. These require different pull-up resistor configurations and load circuit designs. Circuit-level compatibility assessment is necessary.

Q: Does RoHS compliance affect substitution decisions?

A: TLE49762KHTSA1 is ROHS3 compliant, while A1183LLHLT is non-compliant. For new designs or applications with environmental compliance requirements, TLE49762KHTSA1 provides regulatory advantage.

Q: Are the packages mechanically interchangeable?

A: Yes. TLE49762KHTSA1 package designations (TO-236-3, SC-59, SOT-23-3) are mechanically compatible with the A1183LLHLT SOT-23W footprint for surface mount applications.