SM671PAA-ADSS Equivalent & Substitute Parts

Part Overview

The SM671PAA-ADSS is a FLASH NAND (SLC) memory integrated circuit manufactured by Silicon Motion, Inc., with a capacity of 40Gbit and UFS3.1 interface. This component is packaged in a 153-TFBGA (11.5x13mm) surface mount configuration and operates across the temperature range of -40°C to 85°C. The part is classified as obsolete, necessitating identification of active equivalent components for ongoing design requirements and production continuity.

Substiute Parts

SM671PAA-ADSS

Silicon Motion, Inc.In Stock: 1046SM671PAA-ADSS Datasheet

Current PartRFQ

SM671PAA-AFSS

Silicon Motion, Inc.In Stock: 872SM671PAA-AFSS Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SM671PAA-ADSS is determined by strict equivalence across the following critical parameters:

Memory Capacity and Organization: The substitute part must maintain 40Gbit capacity with 5G x 8 memory organization to ensure functional compatibility with existing system architecture.

Interface Specification: UFS3.1 interface compatibility is mandatory for proper communication protocol alignment with host controllers and system firmware.

Package Configuration: The 153-TFBGA (11.5x13mm) surface mount package defines the physical footprint and pin assignment. Substitutes must use identical packaging to ensure PCB layout compatibility without redesign.

Temperature Operating Range: The -40°C to 85°C operating range must be maintained to support the intended application environment.

Compliance Standards: RoHS3 compliance and MSL 3 (168 Hours) moisture sensitivity level must be preserved to meet regulatory and manufacturing process requirements.

Manufacturer Consistency: Silicon Motion, Inc. as the original manufacturer ensures design continuity and firmware compatibility within the Ferri-UFS™ series.

Parameter Comparison

Engineering Selection Recommendations

The SM671PAA-AFSS is a direct functional equivalent to the SM671PAA-ADSS. Both components share identical electrical specifications, memory capacity, interface protocol, package configuration, and compliance certifications. The primary distinction is product status: the SM671PAA-ADSS is classified as obsolete, while the SM671PAA-AFSS maintains active status with current manufacturing availability.

For new designs and production continuity, the SM671PAA-AFSS is the appropriate selection. The component maintains full compatibility with existing PCB layouts, firmware implementations, and system architectures designed for the SM671PAA-ADSS. No design modifications or validation procedures are required for this substitution.

Current inventory availability shows 792 pieces of SM671PAA-AFSS in stock, supporting immediate procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can SM671PAA-AFSS be used as a direct replacement for SM671PAA-ADSS without PCB modifications?

A: Yes. Both components use identical 153-TFBGA (11.5x13mm) packaging with matching pin assignments. No PCB layout changes are required.

Q: Are the memory specifications identical between these two parts?

A: Yes. Both parts feature 40Gbit capacity with 5G x 8 memory organization and UFS3.1 interface protocol.

Q: What is the difference between SM671PAA-ADSS and SM671PAA-AFSS?

A: The primary difference is product status. SM671PAA-ADSS is obsolete, while SM671PAA-AFSS is active with current manufacturing support. All electrical and physical specifications are identical.

Q: Do both parts meet the same compliance standards?

A: Yes. Both components are ROHS3 compliant with MSL 3 (168 Hours) moisture sensitivity level.

Q: What is the operating temperature range for these components?

A: Both parts operate across -40°C to 85°C, supporting industrial and commercial temperature environments.

Q: Are there any firmware or driver compatibility concerns with this substitution?

A: No compatibility concerns exist. Both components share identical UFS3.1 interface specifications and belong to the same Ferri-UFS™ series, ensuring seamless integration with existing system firmware.

Q: What is the moisture sensitivity level, and what does it mean for handling?

A: Both parts have MSL 3 rating with 168 hours of floor life. This specifies the maximum time the component can be exposed to ambient conditions (30°C, 60% relative humidity) before requiring baking prior to reflow soldering.