A1186LLHLT Equivalent & Substitute Parts

Part Overview

The A1186LLHLT 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 programmable trip points and a wide supply voltage range of 4.6V to 24V. The part is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement continuity.

Substiute Parts

A1186LLHLT

Allegro MicroSystemsIn Stock: 832A1186LLHLT 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 eligibility for the A1186LLHLT is determined by the following critical parameters:

Core Functional Requirements:

• Technology: Hall Effect magnetic sensing
• Function: Unipolar Switch operation
• Polarization: South Pole detection
• Automotive Grade with AEC-Q100 qualification

Electrical Compatibility:

• Supply voltage range must accommodate the original 4.6V ~ 24V specification
• Maximum supply current: 17mA
• Operating temperature range: -40°C ~ 150°C minimum

Physical & Packaging Constraints:

• Surface mount technology required
• Package compatibility with SOT-23W or equivalent footprints

The substitute parts TLE49761KHTSA1 and TLE49762KHTSA1 meet these core requirements as active Hall Effect unipolar switches with automotive qualification. Both maintain the same functional classification, sensing technology, and temperature operating range.

Parameter Comparison

Engineering Selection Recommendations

TLE49762KHTSA1 (Infineon Technologies) is the primary substitute for the A1186LLHLT. This part maintains full automotive qualification (AEC-Q100), identical maximum supply current (17mA), matching operating temperature range (-40°C ~ 150°C), and South Pole polarization. The supply voltage range of 3V ~ 18V covers the majority of the original specification, with the lower bound at 3V versus 4.6V representing a minor extension. The part is actively produced and ROHS3 compliant, addressing obsolescence and environmental compliance concerns. The output type differs (Open Collector versus Current Source), requiring circuit-level verification for compatibility.

TLE49761KHTSA1 (Ampleon USA Inc.) is listed as an alternative substitute. Complete electrical parameter specifications are not provided in the available data, limiting detailed compatibility assessment. This part is actively produced and available in bulk packaging.

Both substitutes address the obsolescence status of the A1186LLHLT while maintaining core Hall Effect unipolar switch functionality and automotive-grade qualification.

Frequently Asked Questions (FAQ)

Q: Why is the A1186LLHLT being replaced? A: The A1186LLHLT is classified as obsolete. Substitute parts ensure design continuity and future procurement availability.

Q: What are the critical parameters for substitution? A: Hall Effect technology, unipolar switch function, South Pole polarization, automotive grade, AEC-Q100 qualification, surface mount packaging, and compatible supply voltage and temperature ranges are the primary substitution criteria.

Q: Is TLE49762KHTSA1 a direct replacement? A: TLE49762KHTSA1 meets the core functional and environmental requirements. The output type differs (Open Collector instead of Current Source), requiring circuit verification before implementation.

Q: What is the voltage difference between A1186LLHLT and TLE49762KHTSA1? A: The A1186LLHLT operates at 4.6V ~ 24V, while TLE49762KHTSA1 operates at 3V ~ 18V. The upper voltage limit is reduced by 6V, which may affect applications requiring the full 24V supply range.

Q: Are both substitutes automotive qualified? A: TLE49762KHTSA1 carries AEC-Q100 automotive qualification. Complete qualification data for TLE49761KHTSA1 is not provided.

Q: What packaging options are available for substitutes? A: TLE49761KHTSA1 is available in Bulk packaging. TLE49762KHTSA1 is supplied in Tape & Reel (TR) format.

Q: Is RoHS compliance a consideration? A: The original A1186LLHLT is RoHS non-compliant. TLE49762KHTSA1 is ROHS3 compliant, supporting environmental and regulatory requirements for new designs.