KX112-1042 Equivalent & Substitute Parts

Part Overview

The KX112-1042 is a low-height tri-axis digital accelerometer manufactured by Kionix Inc., designed for motion sensing applications requiring user-selectable acceleration ranges. The device measures acceleration across X, Y, and Z axes with selectable scales (±2g, ±4g, ±8g) and operates at 800Hz bandwidth. The part is surface-mounted in a 12-LGA (2x2) package and communicates via I2C or SPI interfaces.

The KX112-1042 has reached obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and system updates.

Substiute Parts

KX112-1042

Kionix Inc.In Stock: 5962KX112-1042 Datasheet

Current PartRFQ

KXTJ3-1057

Kionix Inc.In Stock: 195631KXTJ3-1057 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KX112-1042 is determined by the following critical parameters:

Core Functional Requirements:

• Tri-axis acceleration measurement (X, Y, Z axes)
• Selectable acceleration range capability
• 800Hz bandwidth operation
• Digital output interface (I2C and/or SPI)
• Supply voltage range compatibility (1.71V to 3.6V)
• Operating temperature range (-40°C to 85°C)

Physical & Packaging Requirements:

• Surface mount technology
• 12-LGA (2x2) package footprint compatibility
• Moisture sensitivity level MSL 3 (168 Hours)

Compliance Requirements:

• ROHS3 compliance
• REACH unaffected status

The KXTJ3-1057 qualifies as a direct substitute based on matching all core functional parameters, identical supply voltage and operating temperature ranges, compatible package specifications, and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The KXTJ3-1057 is the qualified substitute for the obsolete KX112-1042 based on the following engineering criteria:

Functional Equivalence: Both devices provide tri-axis digital acceleration measurement with selectable ranges, 800Hz bandwidth, and identical supply voltage and operating temperature specifications. The KXTJ3-1057 extends the acceleration range to ±16g, providing additional measurement capability without compromising compatibility with existing ±2g, ±4g, and ±8g applications.

Interface Compatibility: The KXTJ3-1057 supports I2C communication, which is the primary interface for the KX112-1042. Applications utilizing SPI must evaluate firmware or hardware modifications if required.

Package Compatibility: Both devices use 12-LGA (2x2) surface-mount packages with identical footprints and MSL 3 moisture sensitivity ratings, enabling direct PCB layout reuse.

Compliance & Availability: The KXTJ3-1057 maintains ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the original part. The substitute is in active production with substantial inventory availability (195,552 pieces), ensuring long-term supply continuity.

Frequently Asked Questions (FAQ)

Q: Can the KXTJ3-1057 replace the KX112-1042 in existing designs?

A: Yes. The KXTJ3-1057 is functionally equivalent for applications using acceleration ranges of ±2g, ±4g, or ±8g. Both devices share identical supply voltage, operating temperature, bandwidth, and package specifications. If the original design uses SPI communication exclusively, firmware or hardware modifications may be required, as the KXTJ3-1057 supports I2C only.

Q: What is the difference in acceleration range between these parts?

A: The KX112-1042 supports ±2g, ±4g, and ±8g selectable ranges. The KXTJ3-1057 adds ±16g capability. For applications limited to ±8g maximum measurement, both parts are functionally identical.

Q: Are the packages physically compatible?

A: Yes. Both devices use 12-LGA (2x2) surface-mount packages with identical footprints and pin configurations. PCB layouts require no modification for package substitution.

Q: What are the sensitivity differences between these accelerometers?

A: Sensitivity values differ due to the extended range of the KXTJ3-1057. At ±2g, the KX112-1042 provides 16384 LSB/g, while the KXTJ3-1057 provides 1024 LSB/g. These differences reflect the different full-scale ranges and do not affect functional compatibility for applications within the overlapping ±2g to ±8g range.

Q: Are there compliance or regulatory differences?

A: No. Both parts maintain ROHS3 compliance, REACH unaffected status, and identical MSL 3 (168 Hours) moisture sensitivity ratings.

Q: Why is the KX112-1042 obsolete?

A: The KX112-1042 has reached end-of-life status. The KXTJ3-1057 represents the current-generation equivalent from Kionix Inc. with enhanced specifications and active manufacturing support.