KX122-1037-PR Equivalent & Substitute Parts

Part Overview

The KX122-1037-PR 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 listed with an obsolete product status, indicating it is no longer in active production or supported by the manufacturer. The identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing applications where this sensor was previously specified.

Substiute Parts

KX122-1037-PR

Kionix Inc.In Stock: 771KX122-1037-PR Datasheet

Current PartRFQ

KXTJ3-1057

Kionix Inc.In Stock: 195631KXTJ3-1057 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The KXTJ3-1057 is identified as a direct substitute for the KX122-1037-PR based on the following substitution criteria:

Matching Parameters:

• Manufacturer: Kionix Inc. (same manufacturer ensures design compatibility and support continuity)
• Package Type: 12-LGA (2x2) (identical physical footprint and pin configuration)
• Category: Motion Sensors (same functional classification)
• Moisture Sensitivity Level: 3 (168 Hours) (equivalent handling and storage requirements)

Enhanced Specifications: The KXTJ3-1057 provides active product status with current manufacturing support, expanded acceleration range options (±2g, 4g, 8g, 16g), digital I2C output interface, and extended operating temperature range (-40°C ~ 85°C). These enhancements maintain backward compatibility while offering improved functionality and supply chain availability.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution:

The KXTJ3-1057 is the designated substitute for the obsolete KX122-1037-PR. Selection of this part is based on:

1. Product Status Alignment: The KXTJ3-1057 maintains active manufacturing status with full vendor support, addressing the obsolescence of the original part.

2. Physical Compatibility: Both components utilize the 12-LGA package format, ensuring mechanical and electrical pin compatibility on existing PCB layouts.

3. Regulatory Compliance: The KXTJ3-1057 carries ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements. The ECCN classification of EAR99 provides standard export control designation.

4. Moisture Handling: Equivalent MSL rating (3, 168 Hours) ensures identical handling, storage, and reflow processing requirements.

Supply Chain Considerations:

Current inventory of the KX122-1037-PR (744 Pcs) is available for immediate use. The KXTJ3-1057 maintains significantly higher inventory levels (195,552 Pcs), supporting long-term production requirements and reducing supply chain risk.

Frequently Asked Questions (FAQ)

Q: Can the KXTJ3-1057 be used as a direct replacement for the KX122-1037-PR on existing circuit boards?

A: Yes. Both components share the 12-LGA package format with identical pin configurations and footprints. No PCB layout modifications are required for physical substitution.

Q: What are the key differences between these two accelerometers?

A: The primary differences are product status and specified performance parameters. The KX122-1037-PR is obsolete with limited technical documentation. The KXTJ3-1057 is an active product with defined acceleration ranges (±2g through ±16g), I2C digital output, 800Hz bandwidth, and operating temperature range of -40°C to 85°C.

Q: Are there any compliance or certification differences?

A: The KXTJ3-1057 provides explicit ROHS3 compliance and REACH unaffected status. Both components share the same MSL rating (3, 168 Hours). The KXTJ3-1057 carries EAR99 export classification, which is standard for commercial accelerometer components.

Q: What packaging options are available for the KXTJ3-1057?

A: The KXTJ3-1057 is supplied in Cut Tape (CT) and Digi-Reel® packaging formats, supporting both manual assembly and automated production environments.

Q: Is the KXTJ3-1057 available in sufficient quantities for production?

A: Yes. Current inventory of 195,552 pieces supports high-volume production requirements. The active product status ensures continued availability through standard distribution channels.

Q: What is the sensitivity specification for the KXTJ3-1057?

A: Sensitivity varies with selected acceleration range: 1024 LSB/g at ±2g, decreasing to 128 LSB/g at ±16g. This selectable scale feature allows optimization for specific application requirements.