MMA6855ALKGWR2 Equivalent & Substitute Parts

Part Overview

The MMA6855ALKGWR2 is a digital accelerometer motion sensor manufactured by NXP USA Inc., designed for single-axis (X-axis) acceleration measurement with a ±120g range and SPI output interface. This component is packaged in a 16-QFN Exposed Pad (6x6mm) surface mount configuration and meets automotive-grade specifications with AEC-Q100 qualification.

The MMA6855ALKGWR2 is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this accelerometer.

Key Parameters

Parameter	Value
Manufacturer	NXP USA Inc.
Category	Motion Sensors
Type	Digital
Acceleration Range	±120g
Axis	X
Sensitivity (LSB/g)	4.096
Output Type	SPI
Supply Voltage	3.135V ~ 5.25V
Operating Temperature	-40°C ~ 105°C
Package / Case	16-QFN Exposed Pad
Mounting Type	Surface Mount
Grade	Automotive
Qualification	AEC-Q100
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitute parts for the MMA6855ALKGWR2 are identified based on strict electrical and mechanical parameter matching. All substitute candidates maintain identical specifications across the following critical parameters:

Acceleration Range: ±120g
Axis Configuration: X-axis single-axis measurement
Sensitivity: 4.096 LSB/g
Output Interface: SPI
Supply Voltage Range: 3.135V ~ 5.25V
Operating Temperature Range: -40°C ~ 105°C
Package Type: 16-QFN Exposed Pad (6x6mm)
Mounting: Surface Mount
Grade: Automotive
Qualification: AEC-Q100
RoHS Status: ROHS3 Compliant
MSL Rating: 3 (168 Hours)

The substitute parts listed below are all manufactured by NXP USA Inc. and differ only in product status (active vs. obsolete) and current inventory availability. All substitute parts are functionally and mechanically interchangeable with the original MMA6855ALKGWR2.

Parameter Comparison

Part Number	Manufacturer	Product Status	Acceleration Range	Sensitivity (LSB/g)	Output Type	Supply Voltage	Operating Temperature	Package	Grade	AEC-Q100	Inventory (Pcs)
MMA6855ALKGWR2	NXP USA Inc.	Obsolete	±120g	4.096	SPI	3.135V ~ 5.25V	-40°C ~ 105°C	16-QFN-EP (6x6)	Automotive	Yes	2035
MMA6855ALKGCWR2	NXP USA Inc.	Active	±120g	4.096	SPI	3.135V ~ 5.25V	-40°C ~ 105°C	16-QFN-EP (6x6)	Automotive	Yes	930
MMA6855AKGCWR2	NXP USA Inc.	Active	±120g	4.096	SPI	3.135V ~ 5.25V	-40°C ~ 105°C	16-QFN-EP (6x6)	Automotive	Yes	1100
MMA6855BKCWR2	NXP USA Inc.	Active	±120g	4.096	SPI	3.135V ~ 5.25V	-40°C ~ 105°C	16-QFN-EP (6x6)	Automotive	Yes	887
MMA6855LKCWR2	NXP USA Inc.	Active	±120g	4.096	SPI	3.135V ~ 5.25V	-40°C ~ 105°C	16-QFN-EP (6x6)	Automotive	Yes	691

Engineering Selection Recommendations

All listed substitute parts maintain full electrical and mechanical compatibility with the MMA6855ALKGWR2. Selection among the active alternatives should be based on the following factors:

Product Status: The MMA6855ALKGWR2 is obsolete. All substitute parts (MMA6855ALKGCWR2, MMA6855AKGCWR2, MMA6855BKCWR2, MMA6855LKCWR2) are active products with ongoing manufacturer support and availability.

Compliance & Certification: All substitute parts retain automotive-grade classification and AEC-Q100 qualification, ensuring compliance with automotive industry standards. RoHS3 compliance and MSL rating (3, 168 hours) are maintained across all alternatives.

Inventory Availability: Current stock levels vary among substitute parts. MMA6855AKGCWR2 offers the highest inventory (1100 pcs), followed by MMA6855ALKGCWR2 (930 pcs), MMA6855BKCWR2 (887 pcs), and MMA6855LKCWR2 (691 pcs).

Design Integration: No PCB layout modifications, firmware changes, or signal conditioning adjustments are required when substituting any of these parts. Pin configuration, package footprint, and electrical interface remain identical.

Frequently Asked Questions (FAQ)

Q: Are all listed substitute parts pin-compatible with the MMA6855ALKGWR2?

A: Yes. All substitute parts use the identical 16-QFN Exposed Pad (6x6mm) package with matching pin assignments, supply voltage requirements, and SPI interface specifications.

Q: Can I use MMA6855ALKGCWR2 as a direct replacement without PCB modifications?

A: Yes. MMA6855ALKGCWR2 is a direct substitute with identical electrical and mechanical specifications. No PCB layout changes are required.

Q: What is the difference between MMA6855ALKGCWR2 and MMA6855AKGCWR2?

A: Both parts are parametrically equivalent with identical acceleration range, sensitivity, output type, supply voltage, operating temperature, package, and automotive qualification. The difference lies in part number coding and current inventory levels. Both are active products suitable for new designs and production.

Q: Do all substitute parts meet automotive AEC-Q100 qualification?

A: Yes. All substitute parts listed maintain AEC-Q100 qualification and automotive-grade classification, ensuring compliance with automotive reliability and quality standards.

Q: Is the MSL (Moisture Sensitivity Level) rating the same across all parts?

A: Yes. All parts, including the original MMA6855ALKGWR2 and all substitutes, carry MSL rating 3 (168 hours), indicating identical moisture handling and storage requirements.

Q: Which substitute part should I select for new production?

A: Any of the active substitute parts (MMA6855ALKGCWR2, MMA6855AKGCWR2, MMA6855BKCWR2, MMA6855LKCWR2) are suitable for new production. Selection may be based on inventory availability and supplier lead times. All maintain identical performance and compliance specifications.

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