A1192LLHLT-T Equivalent & Substitute Parts

Part Overview

The A1192LLHLT-T is an active unipolar Hall Effect magnetic switch manufactured by Allegro MicroSystems, designed for automotive-grade applications. This digital switch operates as a current source output device with programmable trip point functionality, housed in a SOT-23W surface mount package. The part maintains Active product status with full AEC-Q100 automotive qualification and ROHS3 compliance. Substitute parts are identified when equivalent functional performance, electrical specifications, and automotive certifications align with the original component's operational requirements.

Substiute Parts

A1192LLHLT-T

Allegro MicroSystemsIn Stock: 8728A1192LLHLT-T 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 A1192LLHLT-T are qualified based on the following critical parameters:

• Functional Equivalence: Unipolar Hall Effect switch technology with South Pole polarization
• Electrical Compatibility: Supply voltage range overlap (minimum 3V, maximum ≥18V), operating temperature range -40°C to 150°C
• Automotive Grade: AEC-Q100 qualification required
• Compliance: ROHS3 and REACH compliance maintained
• Mounting: Surface mount technology with compatible package footprints

The substitute parts TLE49761KHTSA1 and TLE49762KHTSA1 meet these criteria as active Hall Effect magnetic switches with automotive qualification. Differences in output type (Current Source vs. Open Collector) and supply current specifications are noted but do not preclude substitution when circuit design accommodates the alternative output configuration.

Parameter Comparison

Engineering Selection Recommendations

TLE49762KHTSA1 (Infineon Technologies): This substitute maintains full automotive qualification (AEC-Q100), ROHS3 compliance, and identical operating temperature range. The part operates within the 3V to 18V supply range, which overlaps the A1192LLHLT-T specification. The primary design consideration is the output type transition from Current Source to Open Collector, requiring circuit-level verification. Supply current specification of 17mA is higher than the original 6.9mA. This part is available in Tape & Reel packaging with 1021 units in stock.

TLE49761KHTSA1 (Ampleon USA Inc.): This substitute is qualified as an active Hall Effect digital switch with automotive-grade designation. Limited parameter data is provided in the specification sheet. Bulk packaging is available with 276436 units in stock. Complete electrical and thermal specifications require direct manufacturer consultation before implementation.

Both substitutes maintain Active product status and automotive-grade compliance. Selection should be based on output type compatibility with the target circuit design and availability requirements.

Frequently Asked Questions (FAQ)

Q: Can the TLE49762KHTSA1 directly replace the A1192LLHLT-T without circuit modifications?

A: The TLE49762KHTSA1 shares core Hall Effect technology, South Pole polarization, and automotive qualification. However, the output type differs (Open Collector vs. Current Source), requiring circuit design review. The supply voltage range (3V–18V) is compatible with the original specification. Mechanical compatibility exists through SOT-23 package family alignment.

Q: What is the significance of the output type difference between Current Source and Open Collector?

A: Current Source output provides a defined current level directly from the sensor. Open Collector output requires external pull-up resistor configuration. Circuit designs must accommodate this functional difference. Both output types are valid for magnetic switch applications; selection depends on downstream circuit requirements.

Q: Are package footprints compatible between SOT-23W and SC-59/SOT-23-3?

A: SOT-23W and SC-59 (SOT-23-3) are related surface mount packages with similar pin pitch and footprint dimensions. Physical compatibility is high for PCB layout purposes. Pin assignment and electrical connection verification is required during design integration.

Q: What certifications confirm automotive suitability for these substitutes?

A: Both substitute parts carry AEC-Q100 qualification, indicating compliance with automotive reliability and quality standards. ROHS3 compliance confirms hazardous substance restrictions. REACH compliance status is unaffected for all three parts.

Q: Is the higher supply current specification (17mA) of the TLE49762KHTSA1 a concern?

A: The 17mA maximum supply current of the TLE49762KHTSA1 is higher than the A1192LLHLT-T specification (6.9mA). Power supply design must accommodate this increased current draw. This difference does not affect functional substitution but requires power budget verification in the target application.