BMC150 Equivalent & Substitute Parts

Part Overview

The BMC150 is a 6-axis inertial measurement unit (IMU) combining accelerometer and magnetometer functionality with I2C and SPI digital output interfaces. Manufactured by Bosch Sensortec, this component is packaged in a 14-pin very fine pitch land grid array (VFLGA) module suitable for surface mount applications.

The BMC150 is classified as obsolete. Identifying equivalent and substitute parts is necessary to support ongoing design requirements, system maintenance, and production continuity where original components are no longer available through standard distribution channels.

Substiute Parts

BMC150

Bosch SensortecIn Stock: 18229BMC150 Datasheet

Current PartRFQ

LSM303AHTR

STMicroelectronicsIn Stock: 6380LSM303AHTR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BMC150 are identified based on the following critical parameters that determine functional and mechanical compatibility:

Functional Parameters:

• Sensor Type: Accelerometer and Magnetometer with 6-axis capability
• Output Interface: I2C and SPI digital communication protocols
• Operating Temperature Range: -40°C to 85°C

Mechanical Parameters:

• Mounting Type: Surface Mount
• Package Category: VFLGA (Very Fine Pitch Land Grid Array) module format
• Pin Count and Footprint: Compatibility with LGA package geometry

Environmental Parameters:

• Moisture Sensitivity Level classification
• Operating temperature specifications

The LSM303AHTR from STMicroelectronics meets the functional and environmental requirements for substitution. Both components provide accelerometer and magnetometer sensing with I2C and SPI output options across the same operating temperature range. Both are surface-mount VFLGA packages designed for compact applications.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The BMC150 is obsolete, while the LSM303AHTR is active and in production. For new designs or systems requiring long-term component availability, the LSM303AHTR is the appropriate selection.

Compliance and Certification: The LSM303AHTR carries RoHS3 compliance and REACH Unaffected status, meeting current regulatory requirements for electronic components in most markets. The ECCN classification differs between parts (7A994 for BMC150 versus EAR99 for LSM303AHTR), which may affect export considerations depending on destination and application.

Functional Equivalence: Both components provide I2C and SPI output interfaces and operate across the identical temperature range (-40°C to 85°C). The LSM303AHTR includes an integrated temperature sensor, providing additional functionality not present in the BMC150.

Package Considerations: The LSM303AHTR uses a 12-pin LGA package (2x2 mm) compared to the BMC150's 14-pin LGA package (2.2x2.2 mm). PCB layout modifications are required for substitution. The LSM303AHTR has a higher moisture sensitivity level (MSL 3 versus MSL 1), requiring stricter handling and storage protocols during manufacturing.

Frequently Asked Questions (FAQ)

Q: Can the LSM303AHTR directly replace the BMC150 without PCB modifications?

A: No. The LSM303AHTR uses a 12-pin LGA (2x2 mm) package while the BMC150 uses a 14-pin LGA (2.2x2.2 mm) package. The footprints are different and require PCB layout redesign. Pin assignments must be verified against the respective datasheets before implementation.

Q: Are the I2C and SPI protocols identical between these two parts?

A: Both components support I2C and SPI output interfaces and operate across the same temperature range. However, register maps, command structures, and initialization sequences may differ. Firmware and driver software must be validated for the specific substitute part.

Q: What is the significance of the different MSL ratings?

A: The BMC150 has MSL 1 (unlimited moisture exposure tolerance), while the LSM303AHTR has MSL 3 (168-hour maximum exposure). MSL 3 components require more stringent handling during storage and assembly. Components must be baked before reflow soldering if moisture absorption limits are exceeded.

Q: Why does the LSM303AHTR have a higher ECCN classification?

A: The BMC150 carries ECCN 7A994 while the LSM303AHTR carries EAR99. ECCN classifications depend on specific technical parameters and manufacturer designation. Verify export control requirements with your compliance department for your specific end-use application and destination.

Q: Does the integrated temperature sensor in the LSM303AHTR affect substitution compatibility?

A: The temperature sensor is an additional feature in the LSM303AHTR. If your application does not require temperature measurement, this functionality can be ignored. If temperature data is needed, the LSM303AHTR provides this capability without additional components.

Q: What inventory considerations apply to these parts?

A: The BMC150 has 18,177 pieces in stock but is obsolete. The LSM303AHTR has 6,363 pieces in stock and is active production. For new projects, source the LSM303AHTR. For legacy system support, BMC150 stock may be available through specialized distributors while supplies last.