TLE49761KHTSA1 Equivalent & Substitute Parts

Part Overview

The TLE49761KHTSA1 is an active unipolar Hall Effect magnetic switch manufactured by Infineon Technologies, designed for automotive-grade applications requiring reliable magnetic field detection. This surface-mount component operates across a wide temperature range (-40°C to 150°C) and is qualified to AEC-Q100 standards. The device features temperature compensation and open collector output architecture, making it suitable for systems requiring direct logic-level interfacing. Substitute parts are identified to provide design flexibility when the primary part is unavailable or when alternative electrical characteristics better match specific application requirements.

Substiute Parts

TLE49761KHTSA1

Infineon TechnologiesIn Stock: 4273TLE49761KHTSA1 Datasheet

Current PartRFQ

A1193LLHLT-T

Allegro MicroSystemsIn Stock: 1850A1193LLHLT-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLE49761KHTSA1 is determined by the following critical parameters:

• Technology: Hall Effect magnetic sensing
• Function: Unipolar switch operation
• Polarization: South pole detection
• Operating Temperature Range: -40°C to 150°C minimum
• Automotive Grade: AEC-Q100 qualification required
• Supply Voltage Compatibility: Overlap within 3V to 18V range
• Package Compatibility: Surface-mount form factor (SOT-23 family)
• RoHS Compliance: ROHS3 Compliant status

The A1193LLHLT-T meets these core substitution criteria through equivalent Hall Effect technology, unipolar switch function, south pole polarization, matching temperature range, AEC-Q100 qualification, and compatible surface-mount packaging. Differences in output type (current source vs. open collector) and sensing range characteristics (programmable vs. fixed) represent design trade-offs that must be evaluated within specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the TLE49761KHTSA1 and A1193LLHLT-T are active automotive-grade products with AEC-Q100 qualification and ROHS3 compliance, ensuring regulatory alignment for automotive applications. The TLE49761KHTSA1 operates within a 3V to 18V supply range with 17mA maximum supply current and open collector output, suitable for direct microcontroller interfacing. The A1193LLHLT-T extends the supply voltage range to 24V with reduced supply current (6.9mA) and current source output, offering lower power consumption and broader voltage compatibility.

Selection between these parts depends on circuit architecture requirements: open collector output is appropriate for pull-up resistor configurations, while current source output provides direct current sinking capability. The A1193LLHLT-T's programmable trip point offers application flexibility compared to the TLE49761KHTSA1's fixed 11mT trip and 5mT release thresholds. Both devices maintain identical operating temperature ranges and automotive qualification status.

Frequently Asked Questions (FAQ)

Q: Can the A1193LLHLT-T directly replace the TLE49761KHTSA1 in existing designs?

A: Direct replacement requires circuit evaluation. Both devices share Hall Effect technology, unipolar switch function, south pole polarization, and AEC-Q100 qualification. However, the output type differs (open collector vs. current source), necessitating output stage circuit compatibility verification. The A1193LLHLT-T's extended 24V supply range and programmable trip point may require firmware or hardware adjustments.

Q: What are the key differences in output architecture?

A: The TLE49761KHTSA1 features open collector output, requiring external pull-up resistor to establish logic levels. The A1193LLHLT-T uses current source output, which directly sinks current to ground, eliminating pull-up resistor requirements and reducing component count.

Q: Are both parts suitable for the same temperature operating range?

A: Yes. Both devices operate across -40°C to 150°C, meeting identical automotive temperature specifications. The TLE49761KHTSA1 specifies junction temperature (TJ), while the A1193LLHLT-T specifies ambient temperature (TA); both achieve the full range within automotive operating conditions.

Q: How do the sensing ranges compare?

A: The TLE49761KHTSA1 provides fixed sensing thresholds (11mT trip, 5mT release). The A1193LLHLT-T offers programmable trip points, allowing application-specific threshold configuration. Fixed thresholds simplify design but reduce flexibility; programmable thresholds require initialization but accommodate varying magnetic field requirements.

Q: What packaging considerations apply to substitution?

A: The TLE49761KHTSA1 uses TO-236-3/SC-59/SOT-23-3 packaging. The A1193LLHLT-T uses SOT-23W packaging. Both are surface-mount three-pin configurations with compatible footprint dimensions, supporting direct PCB layout substitution without redesign.

Q: Do both parts meet automotive compliance requirements?

A: Yes. Both devices carry AEC-Q100 qualification and ROHS3 compliance, satisfying automotive regulatory and environmental standards. Both maintain active product status with established supply chains.