| PartNumber | MMA6556KW | MMA6555KW | MMA6555KCWR2 |
| Description | Accelerometers X-AXIS 120G | Accelerometers X-AXIS 100G | Accelerometers Xtrinsic 12 bits SPI Accelerometer, 3.3V, X, 105g, QFN 16 |
| Manufacturer | NXP | NXP | NXP |
| Product Category | Accelerometers | Accelerometers | Accelerometers |
| RoHS | E | E | - |
| Sensor Type | 1-axis | 1-axis | 1-axis |
| Sensing Axis | X | X | X |
| Acceleration | 120 g | 105 g | 105 g |
| Sensitivity | 16 LSB/g | 18.2 LSB/g | 18.2 LSB/g |
| Output Type | Digital | Digital | Digital SPI |
| Interface Type | SPI | SPI | SPI |
| Resolution | 12 bit | 12 bit | 12 bit |
| Supply Voltage Max | 5 VDC | 5 VDC | 5.25 V |
| Supply Voltage Min | 3 VDC | 3.3 VDC | 3.135 V |
| Operating Supply Current | 7 mA | 7 mA | 7 mA |
| Package / Case | QFN-16 | QFN-16 | QFN-16 |
| Packaging | Tube | Tube | Reel |
| Series | MMA655x | MMA655x | MMA655x |
| Brand | NXP / Freescale | NXP / Freescale | NXP / Freescale |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Moisture Sensitive | Yes | Yes | Yes |
| Product Type | Accelerometers | Accelerometers | Accelerometers |
| Factory Pack Quantity | 75 | 75 | 2000 |
| Subcategory | Sensors | Sensors | Sensors |
| Part # Aliases | 935310749574 | 935310365574 | 935315387528 |
| Unit Weight | 0.006325 oz | 0.006325 oz | 0.006913 oz |
| Minimum Operating Temperature | - | - | - 40 C |
| Maximum Operating Temperature | - | - | + 105 C |