US2881LSO Equivalent & Substitute Parts

Part Overview

The US2881LSO is a digital switch latch Hall Effect magnetic sensor manufactured by Melexis Technologies NV in SOT-23 surface mount packaging. This component functions as an open drain magnetic switch with latch capability, designed for applications requiring magnetic field detection and switching control. The US2881LSO is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support, production continuity, and system maintenance.

Substiute Parts

US2881LSO

Melexis Technologies NVIn Stock: 911US2881LSO Datasheet

Current PartRFQ

US2881LSE-AAA-000-RE

Melexis Technologies NVIn Stock: 2684US2881LSE-AAA-000-RE Datasheet

DirectRFQ

TLE4946KHTSA1

Infineon TechnologiesIn Stock: 56429TLE4946KHTSA1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the US2881LSO are identified based on strict alignment with the following critical parameters:

Primary Substitution Criteria:

• Function: Latch operation
• Technology: Hall Effect magnetic sensing
• Polarization: South Pole detection
• Output Type: Open Drain or Open Collector
• Mounting Type: Surface Mount
• Package Compatibility: SOT-23-3 / SC-59 / TO-236-3 footprint
• Operating Temperature Range: -40°C ~ 150°C minimum
• Supply Voltage Overlap: Minimum 3.5V ~ 24V compatibility
• RoHS3 Compliance: Required for regulatory alignment

Substitution Categories:

Direct Equivalent (Same Manufacturer): US2881LSE-AAA-000-RE represents the active production equivalent from Melexis Technologies NV. This part maintains identical functional specifications, sensing range, supply voltage, output current capability, and temperature range as the US2881LSO. The primary difference is packaging format (Tape & Reel vs. bulk) and active product status, making it the preferred direct replacement.

Similar Substitute (Alternative Manufacturer): TLE4946KHTSA1 from Infineon Technologies provides functional substitution with documented differences in electrical parameters. This part operates within a different supply voltage range (2.7V ~ 18V), exhibits different sensing thresholds (19mT Trip, -19mT Release), and features open collector output instead of open drain. The TLE4946KHTSA1 includes automotive qualification (AEC-Q100) and temperature compensation features not present in the US2881LSO specification.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Recommended Primary Option):

The US2881LSE-AAA-000-RE is the optimal substitute for the obsolete US2881LSO. Both parts are manufactured by Melexis Technologies NV and maintain identical electrical and functional specifications. The US2881LSE-AAA-000-RE is in active production status with substantial inventory availability (2617 Pcs), ensuring long-term supply continuity. This part preserves all critical parameters including sensing range, supply voltage, output current, and temperature operating range. The only functional difference is packaging format (Tape & Reel), which does not affect component performance or circuit integration. ROHS3 compliance and REACH unaffected status are maintained.

For Alternative Substitution (When Direct Equivalent Unavailable):

The TLE4946KHTSA1 from Infineon Technologies provides functional substitution when the direct Melexis equivalent is unavailable. This part shares the same Hall Effect latch technology, South Pole polarization, surface mount packaging, and temperature operating range. However, the following parameter differences require circuit-level evaluation:

• Sensing Range: 19mT Trip / -19mT Release (vs. 4.5mT for US2881LSO) — requires magnetic field strength verification
• Supply Voltage: 2.7V ~ 18V (vs. 3.5V ~ 24V) — compatible with 3.5V ~ 18V overlap range
• Output Current: 20mA maximum (vs. 50mA) — verify load requirements
• Output Type: Open Collector (vs. Open Drain) — requires pull-up resistor configuration review

The TLE4946KHTSA1 includes automotive-grade qualification (AEC-Q100) and temperature compensation features, providing enhanced performance characteristics for demanding applications. This part is suitable for substitution only when application requirements align with the specified parameter differences.

Frequently Asked Questions (FAQ)

Q1: Can US2881LSE-AAA-000-RE be used as a direct replacement for US2881LSO?

Yes. The US2881LSE-AAA-000-RE is the active production equivalent manufactured by Melexis Technologies NV. All electrical specifications, sensing characteristics, and functional parameters are identical. The primary difference is packaging format (Tape & Reel vs. bulk). Both parts use the same SOT-23-3 footprint and are pin-compatible.

Q2: What are the key differences between US2881LSO and TLE4946KHTSA1?

The TLE4946KHTSA1 differs in three critical areas: (1) Sensing Range — 19mT Trip vs. 4.5mT Trip, requiring stronger magnetic fields for activation; (2) Output Current — 20mA maximum vs. 50mA, limiting load-driving capability; (3) Output Type — Open Collector vs. Open Drain, requiring different pull-up resistor implementation. Supply voltage overlap exists between 3.5V and 18V.

Q3: Is the TLE4946KHTSA1 suitable for all applications using US2881LSO?

No. The TLE4946KHTSA1 is suitable only for applications where the higher sensing threshold (19mT vs. 4.5mT) and lower output current (20mA vs. 50mA) are acceptable. Applications with tight magnetic field tolerances or high output current requirements require the direct Melexis equivalent US2881LSE-AAA-000-RE.

Q4: Are both substitute parts RoHS3 compliant?

Yes. Both US2881LSE-AAA-000-RE and TLE4946KHTSA1 are ROHS3 compliant and REACH unaffected, maintaining regulatory alignment with the original US2881LSO.

Q5: What is the moisture sensitivity level for these parts?

All three parts (US2881LSO, US2881LSE-AAA-000-RE, and TLE4946KHTSA1) have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements.

Q6: Can these parts be used interchangeably in existing PCB designs?

US2881LSO and US2881LSE-AAA-000-RE are fully interchangeable due to identical pin configuration and SOT-23-3 footprint. The TLE4946KHTSA1 shares the same footprint but requires circuit verification for output type differences (Open Collector vs. Open Drain) and sensing range compatibility before implementation.

Q7: What is the supply voltage compatibility range for substitution?

The US2881LSO and US2881LSE-AAA-000-RE both require 3.5V ~ 24V supply. The TLE4946KHTSA1 operates at 2.7V ~ 18V. Substitution with TLE4946KHTSA1 is limited to applications operating within the 3.5V ~ 18V overlap range.