KX126-1063 Equivalent & Substitute Parts

Part Overview

The KX126-1063 is a digital accelerometer manufactured by Kionix Inc. designed for motion sensing applications requiring multi-axis acceleration measurement. This device features selectable acceleration ranges (±2g, ±4g, ±8g) with dual communication interfaces (I2C and SPI), operating across a supply voltage range of 1.71V to 3.6V. The product is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

KX126-1063

Kionix Inc.In Stock: 20758KX126-1063 Datasheet

Current PartRFQ

KXTJ3-1057

Kionix Inc.In Stock: 195631KXTJ3-1057 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the KX126-1063 is determined by the following critical parameters:

Core Compatibility Criteria:

• Axis configuration: X, Y, Z multi-axis measurement
• Acceleration range overlap: Minimum support for ±2g, ±4g, ±8g ranges
• Bandwidth: 800Hz operation
• Supply voltage compatibility: 1.71V – 3.6V range
• Package footprint: 12-VFLGA (2x2) form factor
• Mounting type: Surface mount technology
• Communication protocol: I2C or SPI interface support

The KXTJ3-1057 qualifies as a substitute based on these parameters. While it extends the acceleration range to ±16g and operates exclusively via I2C (removing SPI capability), it maintains all core compatibility requirements including identical package geometry, voltage supply range, bandwidth specification, operating temperature range, and RoHS3 compliance status.

Parameter Comparison

Engineering Selection Recommendations

The KXTJ3-1057 is the designated substitute for the obsolete KX126-1063. Selection of this alternative is supported by the following factors:

Product Status: The KXTJ3-1057 maintains active product status with Kionix Inc., ensuring continued availability and manufacturing support compared to the obsolete KX126-1063.

Regulatory Compliance: Both components maintain identical RoHS3 compliance and MSL ratings, confirming equivalent environmental and handling requirements for manufacturing processes.

Physical and Electrical Compatibility: Identical package geometry (12-VFLGA 2x2), supply voltage range (1.71V – 3.6V), operating temperature range (-40°C to 85°C), and bandwidth (800Hz) ensure direct PCB-level compatibility without redesign.

Interface Consideration: The KXTJ3-1057 operates exclusively via I2C protocol. Systems currently utilizing SPI communication with the KX126-1063 require interface modification or alternative component selection.

Acceleration Range Extension: The KXTJ3-1057 provides an extended acceleration range to ±16g while maintaining full compatibility with the ±2g, ±4g, and ±8g ranges of the original component.

Frequently Asked Questions (FAQ)

Q: Can the KXTJ3-1057 directly replace the KX126-1063 without PCB modifications?

A: Direct replacement is possible if your system uses I2C communication. The identical 12-VFLGA (2x2) package footprint and pinout allow drop-in substitution. If your design currently implements SPI communication, interface modification is required.

Q: What is the primary difference between these two accelerometers?

A: The KXTJ3-1057 removes SPI support and adds ±16g acceleration range capability. Both devices maintain identical bandwidth (800Hz), supply voltage range (1.71V – 3.6V), operating temperature range (-40°C to 85°C), and package form factor.

Q: Why is the KX126-1063 classified as obsolete?

A: The KX126-1063 has reached end-of-life status with Kionix Inc. The KXTJ3-1057 represents the active product line continuation with enhanced specifications and ongoing manufacturing support.

Q: Are there sensitivity differences between these components?

A: Sensitivity values differ due to the extended acceleration range in the KXTJ3-1057. Both devices support selectable scale configuration across their respective acceleration ranges.

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

A: The KXTJ3-1057 is available in Cut Tape (CT) and Digi-Reel packaging formats, compared to the standard packaging of the KX126-1063.

Q: Do both components require identical PCB layout considerations?

A: Yes. Both components use the 12-VFLGA (2x2) surface mount package with identical pinout, MSL rating (3, 168 Hours), and thermal characteristics, requiring no layout modifications for substitution.