A1180LLHLT Equivalent & Substitute Parts

Part Overview

The A1180LLHLT 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 with programmable trip point functionality, suitable for South Pole magnetic field sensing in the 4.6V to 24V supply range.

The A1180LLHLT is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this magnetic sensor technology.

Substiute Parts

A1180LLHLT

Allegro MicroSystemsIn Stock: 990A1180LLHLT 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

Substitute parts for the A1180LLHLT are identified based on the following critical parameters that determine functional and mechanical compatibility:

Core Substitution Criteria:

• Function: Unipolar Switch operation
• Technology: Hall Effect magnetic sensing
• Polarization: South Pole detection
• Automotive Grade: AEC-Q100 qualification required
• Operating Temperature Range: -40°C ~ 150°C minimum
• Supply Voltage Compatibility: Overlap with 4.6V ~ 24V range
• Maximum Supply Current: 17mA specification
• Surface Mount Mounting Type
• Magnetic Sensor Category

The identified substitute parts (TLE49761KHTSA1 and TLE49762KHTSA1) meet these core criteria. Both are active, automotive-qualified Hall Effect unipolar switches with South Pole polarization and compatible operating temperature ranges. Package differences (SOT-23W vs. SC-59) represent mechanical variations that may require PCB layout adjustment but do not affect electrical functionality within the specified parameters.

Parameter Comparison

Engineering Selection Recommendations

TLE49762KHTSA1 (Infineon Technologies) is the primary recommended substitute. This part maintains full specification alignment with the A1180LLHLT across all documented parameters: identical supply current maximum (17mA), matching operating temperature range (-40°C ~ 150°C), automotive grade classification, and AEC-Q100 qualification. The supply voltage range (3V ~ 18V) overlaps the original specification (4.6V ~ 24V) within the 3V ~ 18V window. The part is currently in active production status with 1021 units in stock. Package compatibility requires verification: TLE49762KHTSA1 is available in TO-236-3/SC-59/SOT-23-3 variants, which may differ from the original SOT-23W footprint and require PCB layout modification. ROHS3 compliance provides regulatory advantage over the non-compliant original part.

TLE49761KHTSA1 (Ampleon USA Inc.) is identified as a secondary substitute option. This part shares the core functional characteristics (unipolar Hall Effect switch, South Pole polarization) and surface mount mounting type. However, critical electrical parameters including supply voltage range, maximum supply current, operating temperature range, automotive grade status, and AEC-Q100 qualification are not specified in available documentation. This information gap presents a risk for direct substitution without manufacturer datasheet verification. The part is in active production with substantial inventory (276436 units).

For applications requiring strict parameter matching and regulatory compliance, TLE49762KHTSA1 is the engineering selection. For applications where unspecified parameters can be verified through manufacturer documentation, TLE49761KHTSA1 may provide an alternative supply source.

Frequently Asked Questions (FAQ)

Q: Can TLE49762KHTSA1 directly replace A1180LLHLT without circuit modification?

A: Electrical substitution is valid based on documented parameters. However, package differences between SOT-23W (original) and SC-59/TO-236-3 (substitute) require PCB footprint verification and potential layout modification. Consult the respective datasheets for pinout confirmation before PCB design finalization.

Q: What is the significance of the supply voltage range difference (4.6V ~ 24V vs. 3V ~ 18V)?

A: The TLE49762KHTSA1 operates within a narrower voltage window. Applications requiring supply voltages above 18V cannot use this substitute. Applications operating within the 3V ~ 18V range are compatible. Verify your circuit's supply voltage specification before selection.

Q: Why is TLE49761KHTSA1 listed as a substitute if key parameters are unspecified?

A: TLE49761KHTSA1 meets the core functional criteria (unipolar Hall Effect switch, South Pole polarization, automotive surface mount magnetic sensor). However, electrical parameter documentation is incomplete. This part is listed as a potential substitute pending manufacturer datasheet review to confirm supply voltage, current, temperature range, and AEC-Q100 qualification alignment.

Q: Does RoHS compliance affect substitution eligibility?

A: RoHS compliance is a regulatory and supply chain consideration, not an electrical substitution criterion. The A1180LLHLT is RoHS non-compliant; TLE49762KHTSA1 is ROHS3 compliant. For new designs or applications subject to RoHS regulations, the compliant substitute is required. For legacy systems, compliance status does not affect functional compatibility.

Q: Are there output type differences between the original and substitutes?

A: The A1180LLHLT features current source output. TLE49762KHTSA1 features open collector output. These are different output topologies. Circuit design must accommodate the output type change. Verify your application's input stage compatibility with open collector output before substitution.

Q: What packaging options are available for TLE49762KHTSA1?

A: TLE49762KHTSA1 is supplied in Tape & Reel (TR) packaging. The original A1180LLHLT packaging format is not specified in available data. Confirm your assembly process compatibility with Tape & Reel format before procurement.