BMA255 Equivalent & Substitute Parts

Part Overview

The BMA255 is a digital accelerometer manufactured by Bosch Sensortec, designed for motion sensing applications requiring three-axis acceleration measurement. The device supports selectable acceleration ranges (±2g, 4g, 8g, 16g) with output via I2C or SPI interfaces, operating across a supply voltage range of 1.62V to 3.6V.

The BMA255 is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Substiute Parts

BMA255

Bosch SensortecIn Stock: 1831BMA255 Datasheet

Current PartRFQ

BMA253

Bosch SensortecIn Stock: 65152BMA253 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BMA255 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Measurement axes (X, Y, Z)
• Selectable acceleration range (±2g, 4g, 8g, 16g)
• Sensitivity specification (LSB/g values)
• Bandwidth range (8Hz to 1kHz)
• Output interface options (I2C, SPI)
• Package type (12-LGA 2x2)
• Operating temperature range (-40°C to 85°C)
• Mounting type (Surface Mount)

Allowable Variations:

• Supply voltage range may be extended (lower minimum acceptable if upper limit ≥3.6V)
• Additional features beyond the base specification (e.g., integrated temperature sensor)
• Product status transition from obsolete to active
• Enhanced compliance certifications (RoHS, REACH)

The BMA253 meets all mandatory matching parameters and represents a direct functional equivalent with extended supply voltage capability and active product status.

Parameter Comparison

Engineering Selection Recommendations

BMA253 as Primary Substitute:

The BMA253 is a direct functional equivalent to the BMA255 across all critical electrical and mechanical parameters. Selection of the BMA253 is supported by the following factors:

• Identical Core Specifications: All acceleration measurement parameters, bandwidth, output interfaces, and package geometry match the BMA255 exactly.
• Extended Supply Voltage Range: The BMA253 operates from 1.2V minimum, providing greater flexibility in power supply design compared to the BMA255's 1.62V minimum.
• Active Product Status: The BMA253 is actively manufactured and supported, ensuring long-term availability and supply chain stability.
• Compliance Certifications: The BMA253 carries RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements.
• Additional Functionality: The integrated temperature sensor in the BMA253 provides supplementary capability without compromising backward compatibility.

Design Transition Path:

For applications currently using the BMA255, direct substitution with the BMA253 requires no firmware modifications, PCB layout changes, or interface protocol adjustments. The identical package footprint (12-LGA 2x2) and pin configuration enable drop-in replacement.

Frequently Asked Questions (FAQ)

Q: Can the BMA253 replace the BMA255 in existing designs without PCB modifications?

A: Yes. The BMA253 uses the identical 12-LGA (2x2) package and pin configuration as the BMA255. No PCB layout changes are required for physical integration.

Q: What is the primary difference between the BMA255 and BMA253?

A: The BMA253 extends the minimum supply voltage from 1.62V to 1.2V and includes an integrated temperature sensor. All acceleration measurement specifications, output interfaces, and operating temperature ranges are identical.

Q: Is the BMA253 compatible with firmware written for the BMA255?

A: The BMA253 maintains register-level compatibility with the BMA255 for core accelerometer functions. Existing firmware requires no modification for basic acceleration measurement operations. The temperature sensor is an optional feature that does not interfere with standard accelerometer operation.

Q: Why is the BMA255 classified as obsolete?

A: The BMA255 has been superseded by the BMA253, which offers extended supply voltage capability and additional integrated functionality. Bosch Sensortec has transitioned production to the BMA253 for new designs and ongoing supply.

Q: Are there any electrical parameter differences that affect circuit design?

A: The supply voltage range difference (BMA255: 1.62V–3.6V; BMA253: 1.2V–3.6V) is the primary electrical distinction. All other parameters, including output voltage levels, I2C/SPI timing, and current consumption specifications, remain equivalent. Designs operating at supply voltages below 1.62V must use the BMA253.

Q: What is the moisture sensitivity level for both parts?

A: Both the BMA255 and BMA253 are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.