KX128-1091-03 Equivalent & Substitute Parts

Part Overview

The KX128-1091-03 is a 12-pin LGA accelerometer manufactured by Kionix Inc., classified as a motion sensor for detecting acceleration across multiple axes. This component is currently designated as obsolete, indicating it is no longer in active production or supported by the manufacturer. The obsolete status necessitates identification of functionally equivalent substitute components to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades.

Substiute Parts

KX128-1091-03

Kionix Inc.In Stock: 882KX128-1091-03 Datasheet

Current PartRFQ

KXTJ3-1057

Kionix Inc.In Stock: 195631KXTJ3-1057 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KX128-1091-03 is based on the following critical parameters that must align between the original and substitute component:

Package Compatibility: Both the original part and substitute must utilize the 12-LGA (2x2) package format to ensure mechanical fit and PCB layout compatibility without redesign.

Manufacturer Consistency: Kionix Inc. maintains a product family of accelerometers with compatible interfaces and electrical characteristics, allowing substitution within the manufacturer's active product line.

Moisture Sensitivity Level: The substitute component must maintain MSL 3 (168 Hours) classification to ensure equivalent handling, storage, and assembly process requirements.

Functional Category: Both components must operate as multi-axis accelerometers within the motion sensor classification to fulfill the same system role.

The KXTJ3-1057 meets all substitution criteria as an active, production-supported accelerometer from Kionix Inc. in the identical 12-LGA package with matching moisture sensitivity specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: KXTJ3-1057

The KXTJ3-1057 is the designated substitute for the obsolete KX128-1091-03 based on the following engineering criteria:

Product Status Alignment: The KXTJ3-1057 maintains active production status with Kionix Inc., ensuring long-term component availability, technical support, and supply chain continuity. The original KX128-1091-03 is obsolete and no longer manufactured.

Regulatory Compliance: The KXTJ3-1057 carries ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements for electronic components. The substitute operates under EAR99 export classification, providing clear regulatory pathway for international distribution.

Package Compatibility: Both components utilize the 12-LGA (2x2) surface mount package, enabling direct substitution without PCB layout modifications or mechanical redesign.

Moisture Handling: Identical MSL 3 (168 Hours) classification ensures equivalent handling protocols during manufacturing, storage, and assembly processes.

Electrical Specifications: The KXTJ3-1057 provides enhanced functionality with selectable acceleration ranges (±2g, 4g, 8g, 16g), I2C digital output, and extended operating temperature range (-40°C ~ 85°C), offering superior performance characteristics compared to the obsolete predecessor.

Frequently Asked Questions (FAQ)

Q: Can the KXTJ3-1057 be used as a direct replacement for the KX128-1091-03 without PCB modifications?

A: Yes. Both components share the identical 12-LGA (2x2) surface mount package format, allowing direct substitution without PCB layout changes or mechanical redesign.

Q: What is the primary reason for substituting the KX128-1091-03?

A: The KX128-1091-03 is designated as obsolete and no longer manufactured by Kionix Inc. The KXTJ3-1057 is the active production substitute that maintains equivalent package specifications and moisture sensitivity requirements.

Q: Are there differences in handling requirements between the original and substitute components?

A: No. Both components maintain MSL 3 (168 Hours) classification, requiring identical moisture control, storage conditions, and assembly process protocols.

Q: What regulatory certifications does the KXTJ3-1057 carry?

A: The KXTJ3-1057 is ROHS3 compliant, REACH unaffected, and classified under EAR99 export control regulations.

Q: Does the KXTJ3-1057 offer enhanced specifications compared to the original part?

A: Yes. The KXTJ3-1057 provides selectable acceleration ranges (±2g, 4g, 8g, 16g), I2C digital output interface, 800Hz bandwidth, and extended operating temperature range (-40°C ~ 85°C), offering expanded functionality beyond the original component.

Q: What is the current inventory status for the substitute component?

A: The KXTJ3-1057 has 195,552 pieces in stock as new original inventory, ensuring immediate availability for production requirements.

Q: Are there packaging options available for the KXTJ3-1057?

A: Yes. The KXTJ3-1057 is available in Cut Tape (CT) and Digi-Reel® packaging formats to accommodate various procurement and assembly workflows.