SM671PXC-ADSS Equivalent & Substitute Parts

Part Overview

The SM671PXC-ADSS is a FLASH NAND (SLC) memory integrated circuit manufactured by Silicon Motion, Inc., with a capacity of 160Gbit organized as 20G x 8. This component features a UFS3.1 interface and is packaged in a 153-TFBGA (11.5x13mm) surface mount configuration. The SM671PXC-ADSS is classified as obsolete product status, necessitating identification of equivalent substitute components for ongoing design support and procurement requirements.

Key Parameters

Parameter	Value
Memory Type	Non-Volatile FLASH
Technology	FLASH - NAND (SLC)
Memory Size	160Gbit
Memory Organization	20G x 8
Memory Interface	UFS3.1
Package / Case	153-TFBGA
Supplier Device Package	153-BGA (11.5x13)
Mounting Type	Surface Mount
Operating Temperature Range	-25°C ~ 85°C
Moisture Sensitivity Level (MSL)	3 (168 Hours)
RoHS Status	ROHS3 Compliant
Series	Ferri-UFS™

Substitute Part Grouping Explanation

Substitution of the SM671PXC-ADSS is determined by strict equivalence across the following critical parameters:

Memory Capacity & Organization: The substitute part must provide 160Gbit capacity with 20G x 8 organization to maintain functional compatibility with existing system architecture.

Interface Protocol: UFS3.1 interface compatibility is mandatory for data transfer protocol alignment with host controllers and system firmware.

Package Specification: The 153-TFBGA (11.5x13mm) package specification ensures mechanical and electrical compatibility with printed circuit board layouts and socket designs.

Thermal Operating Range: The -25°C ~ 85°C operating temperature range must be maintained to ensure reliability across specified environmental conditions.

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

Manufacturer & Series: Silicon Motion, Inc. Ferri-UFS™ series components maintain consistent electrical characteristics and firmware compatibility.

Parameter Comparison

Parameter	SM671PXC-ADSS (Main Part)	SM671PXC-AFSS (Substitute)	Match Status
Manufacturer	Silicon Motion, Inc.	Silicon Motion, Inc.	Identical
Memory Type	Non-Volatile FLASH	Non-Volatile FLASH	Identical
Technology	FLASH - NAND (SLC)	FLASH - NAND (SLC)	Identical
Memory Size	160Gbit	160Gbit	Identical
Memory Organization	20G x 8	20G x 8	Identical
Memory Interface	UFS3.1	UFS3.1	Identical
Package / Case	153-TFBGA	153-TFBGA	Identical
Supplier Device Package	153-BGA (11.5x13)	153-BGA (11.5x13)	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Operating Temperature Range	-25°C ~ 85°C	-25°C ~ 85°C	Identical
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Series	Ferri-UFS™	Ferri-UFS™	Identical
Product Status	Obsolete	Active	Substitute is Active

Engineering Selection Recommendations

The SM671PXC-AFSS serves as a direct functional equivalent to the obsolete SM671PXC-ADSS. Both components are manufactured by Silicon Motion, Inc., and share identical electrical, mechanical, and thermal specifications across all critical parameters.

Product Status Consideration: The SM671PXC-ADSS is classified as obsolete, while the SM671PXC-AFSS maintains active product status. This distinction indicates ongoing manufacturer support, availability, and compliance maintenance for the substitute part.

Compliance & Certification: Both parts maintain ROHS3 compliance and identical MSL 3 (168 Hours) moisture sensitivity ratings, ensuring compatibility with current manufacturing processes and regulatory requirements.

Inventory & Availability: The SM671PXC-AFSS is available with 733 pieces in stock, providing procurement continuity for applications currently utilizing the obsolete SM671PXC-ADSS.

Design Integration: No circuit modifications, firmware updates, or system reconfiguration are required when substituting the SM671PXC-AFSS for the SM671PXC-ADSS, as all functional parameters remain identical.

Frequently Asked Questions (FAQ)

Q: Can the SM671PXC-AFSS be used as a direct replacement for the SM671PXC-ADSS?

A: Yes. The SM671PXC-AFSS is a direct functional equivalent. Both components share identical memory capacity (160Gbit), organization (20G x 8), interface protocol (UFS3.1), package specification (153-TFBGA 11.5x13mm), operating temperature range (-25°C ~ 85°C), and compliance certifications (ROHS3, MSL 3).

Q: What is the primary difference between these two part numbers?

A: The SM671PXC-ADSS is classified as obsolete product status, while the SM671PXC-AFSS maintains active product status. This indicates the substitute part receives ongoing manufacturer support and maintains current availability.

Q: Are there any electrical parameter differences between these components?

A: No. Both components are manufactured by Silicon Motion, Inc., within the Ferri-UFS™ series and share identical electrical specifications across all provided parameters.

Q: Will existing PCB layouts require modification for the SM671PXC-AFSS?

A: No. Both components utilize the identical 153-TFBGA (11.5x13mm) package specification, ensuring mechanical and electrical compatibility with existing printed circuit board designs without layout modifications.

Q: Are there any firmware or software compatibility concerns?

A: No. Both components implement the UFS3.1 interface protocol identically, ensuring full compatibility with existing host controller firmware and system software.

Q: What is the moisture sensitivity level for the SM671PXC-AFSS?

A: The SM671PXC-AFSS maintains MSL 3 (168 Hours) moisture sensitivity level, identical to the SM671PXC-ADSS. This specification defines the maximum time the component can be exposed to ambient conditions of 30°C and 85% relative humidity before requiring baking.

Q: Is the SM671PXC-AFSS RoHS compliant?

A: Yes. The SM671PXC-AFSS is ROHS3 compliant, maintaining identical regulatory compliance status as the SM671PXC-ADSS.

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