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BMA253 Accelerometer Equivalent & Substitute Parts
Part Overview
The BMA253 is a digital triaxial accelerometer manufactured by Bosch Sensortec, designed for motion sensing applications requiring multi-axis acceleration measurement. This component operates across selectable acceleration ranges (±2g, ±4g, ±8g, ±16g) with digital output via I2C and SPI interfaces. The BMA253 is classified as an active product with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).
Substitute parts are identified when equivalent functional performance can be achieved within the specified electrical and mechanical parameters, maintaining compatibility with system-level requirements including package form factor, supply voltage range, and output interface protocols.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | BMA253 |
| Manufacturer | Bosch Sensortec |
| Category | Motion Sensors |
| Type | Digital Accelerometer |
| Measurement Axes | X, Y, Z (Triaxial) |
| Acceleration Range | ±2g, ±4g, ±8g, ±16g (Selectable) |
| Sensitivity (LSB/g) | 1024 (±2g) to 128 (±16g) |
| Bandwidth | 8 Hz to 1 kHz |
| Output Interface | I2C, SPI |
| Supply Voltage | 1.2 V to 3.6 V |
| Operating Temperature | −40°C to +85°C |
| Package Type | 12-VFLGA (2×2 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitution eligibility for the BMA253 is determined by strict alignment across the following critical parameters:
Mandatory Matching Parameters:
- Measurement axes configuration (X, Y, Z triaxial)
- Acceleration range capability (±2g, ±4g, ±8g, ±16g selectable)
- Package form factor (12-VFLGA, 2×2 mm footprint)
- Mounting type (Surface Mount)
- Supply voltage compatibility (overlap within 1.2 V to 3.6 V range)
- RoHS3 compliance status
- MSL rating (1 or better)
Functional Parameters:
- Digital output interface type
- Operating temperature range coverage
The BMA400 qualifies as a substitute part based on matching acceleration range, package geometry, mounting type, supply voltage overlap, RoHS3 compliance, and MSL rating. Differences in bandwidth specification and output interface availability do not preclude substitution when system requirements permit.
Parameter Comparison
| Parameter | BMA253 | BMA400 | Compatibility Notes |
|---|---|---|---|
| Manufacturer | Bosch Sensortec | Bosch Sensortec | Same manufacturer |
| Measurement Axes | X, Y, Z | X, Y, Z | Identical triaxial configuration |
| Acceleration Range | ±2g, ±4g, ±8g, ±16g | ±2g, ±4g, ±8g, ±16g | Identical selectable ranges |
| Package Type | 12-VFLGA (2×2 mm) | 12-VFLGA Module (2×2 mm) | Identical footprint and pinout |
| Mounting Type | Surface Mount | Surface Mount | Identical mounting method |
| Supply Voltage Range | 1.2 V to 3.6 V | 1.71 V to 3.6 V | Overlapping range; BMA400 minimum is higher |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Identical compliance |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | Identical moisture sensitivity |
| Product Status | Active | Active | Both actively manufactured |
Engineering Selection Recommendations
BMA253 Primary Selection: The BMA253 is the specified component for applications requiring the full supply voltage range of 1.2 V to 3.6 V, particularly in ultra-low-power designs operating at voltages below 1.71 V. This part maintains active product status with established supply chain availability (65,100 units in stock).
BMA400 Substitution Criteria: The BMA400 is a valid substitute when the system supply voltage remains at or above 1.71 V. Both parts share identical acceleration measurement ranges, package geometry, and compliance certifications. The BMA400 is suitable for applications where the lower supply voltage threshold of the BMA253 is not a design requirement. Current inventory of 19,056 units supports substitution availability.
Compliance Verification: Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, confirming suitability for standard PCB assembly processes without additional moisture control measures.
Frequently Asked Questions (FAQ)
Q: Can BMA400 replace BMA253 in all applications?
A: The BMA400 is a valid substitute provided the system supply voltage does not fall below 1.71 V. The BMA253 supports operation down to 1.2 V, making it the required choice for ultra-low-voltage applications. Both parts are otherwise functionally equivalent across acceleration measurement ranges and package specifications.
Q: Are the package footprints identical?
A: Yes. Both the BMA253 and BMA400 use the 12-VFLGA package with 2×2 mm dimensions. PCB layout and reflow profiles are interchangeable.
Q: What is the difference in output interface capability?
A: The BMA253 explicitly supports both I2C and SPI digital output interfaces with specified bandwidth of 8 Hz to 1 kHz. The BMA400 output interface type is not specified in the provided data. System designs requiring specific interface protocols should verify BMA400 interface compatibility before substitution.
Q: Do both parts require special moisture handling?
A: No. Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard PCB assembly processes apply without additional dry-pack or bake-out requirements.
Q: What is the inventory status for each part?
A: BMA253 has 65,100 units in stock. BMA400 has 19,056 units in stock. Both are classified as new original components.
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