AT25SF161-SSHD-T Equivalent & Substitute Parts

Part Overview

The AT25SF161-SSHD-T is a 16Mbit NOR Flash memory IC with SPI Quad I/O interface manufactured by Renesas Electronics Corporation. This device is classified as Obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part is packaged in 8-SOIC surface mount configuration with Cut Tape and Digi-Reel packaging options. Equivalent and substitute parts must maintain compatibility across memory capacity, interface protocol, package type, and electrical operating parameters.

Substiute Parts

AT25SF161-SSHD-T

Renesas Electronics CorporationIn Stock: 110286AT25SF161-SSHD-T Datasheet

Current PartRFQ

AT25SF161B-SSHB-T

Renesas Electronics CorporationIn Stock: 32262AT25SF161B-SSHB-T Datasheet

DirectRFQ

AT25SF161B-SSHD-T

Renesas Electronics CorporationIn Stock: 2968AT25SF161B-SSHD-T Datasheet

DirectRFQ

AT25FF161A-SSHN-T

Renesas Electronics CorporationIn Stock: 2034AT25FF161A-SSHN-T Datasheet

MFR RecommendedRFQ

W25Q16JVSNIQ

Winbond ElectronicsIn Stock: 169554W25Q16JVSNIQ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AT25SF161-SSHD-T are qualified based on the following criteria:

Core Compatibility Requirements:

• Memory Size: 16Mbit (2M x 8 organization)
• Memory Interface: SPI - Quad I/O
• Package: 8-SOIC surface mount
• Memory Type: Non-Volatile FLASH - NOR technology
• RoHS3 Compliance

Allowed Parameter Variations:

• Clock Frequency: 104 MHz to 133 MHz
• Voltage Supply Range: 1.65V to 3.6V (must encompass or match the original 2.5V ~ 3.6V)
• Operating Temperature: -40°C to 85°C
• Write Cycle Time: Variations permitted within functional specifications
• Access Time: Variations permitted
• Product Status: Active or Obsolete

Substitutes are grouped by manufacturer and performance tier while maintaining electrical and mechanical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

AT25SF161B-SSHD-T (Renesas, Active Status) This part is the direct successor to the AT25SF161-SSHD-T within the Renesas product line. It maintains identical voltage supply range (2.5V ~ 3.6V), package configuration, and operating temperature specifications. The increased clock frequency (108 MHz vs. 104 MHz) and improved write cycle times provide performance enhancement. This part is recommended as the primary replacement for obsolete inventory management and new design transitions.

AT25SF161B-SSHB-T (Renesas, Active Status) This variant differs in packaging (Cut Tape vs. Tape & Reel) and has a slightly higher minimum supply voltage (2.7V vs. 2.5V). It is suitable for applications where the 2.7V minimum voltage threshold is acceptable. The 108 MHz clock frequency and improved write performance align with modern design requirements.

AT25FF161A-SSHN-T (Renesas, Active Status, MFR Recommended) This part offers the highest clock frequency (133 MHz) and the widest voltage supply range (1.65V ~ 3.6V), enabling operation in low-power applications. It is designated as manufacturer recommended and provides superior performance characteristics. The extended voltage range supports broader system design flexibility.

W25Q16JVSNIQ (Winbond, Active Status, MFR Recommended) This cross-manufacturer substitute from Winbond Electronics provides 133 MHz clock frequency and is verified for DiGi-Electronics programmability. It maintains ROHS3 compliance and operates within the 2.7V ~ 3.6V voltage range. The higher moisture sensitivity level (MSL 3) requires controlled storage conditions compared to the original part (MSL 1). This part is designated as manufacturer recommended and offers high inventory availability.

Frequently Asked Questions (FAQ)

Q: Can AT25SF161B-SSHD-T directly replace AT25SF161-SSHD-T in existing designs? A: Yes. Both parts share identical voltage supply range (2.5V ~ 3.6V), operating temperature range (-40°C ~ 85°C), 8-SOIC package configuration, and SPI Quad I/O interface. The AT25SF161B-SSHD-T offers improved performance with 108 MHz clock frequency and faster write cycle times.

Q: What is the difference between AT25SF161B-SSHB-T and AT25SF161B-SSHD-T? A: The primary difference is packaging format. AT25SF161B-SSHB-T is supplied in Cut Tape (CT) & Digi-Reel packaging, while AT25SF161B-SSHD-T is supplied in Tape & Reel (TR) format. The AT25SF161B-SSHB-T has a minimum supply voltage of 2.7V, whereas AT25SF161B-SSHD-T maintains 2.5V minimum. Both have identical clock frequency (108 MHz) and 8-SOIC package dimensions.

Q: Is W25Q16JVSNIQ compatible with systems designed for AT25SF161-SSHD-T? A: Electrical and mechanical compatibility is confirmed. Both parts feature 16Mbit capacity, 2M x 8 organization, SPI Quad I/O interface, and 8-SOIC packaging. The W25Q16JVSNIQ operates within 2.7V ~ 3.6V voltage range, which is compatible with the original 2.5V ~ 3.6V specification. The higher moisture sensitivity level (MSL 3) requires adherence to storage and handling protocols during manufacturing.

Q: Why does AT25FF161A-SSHN-T have a lower minimum voltage (1.65V)? A: The AT25FF161A-SSHN-T is designed for low-power applications and supports operation at reduced supply voltages. Systems operating at 2.5V or higher are fully compatible. The extended voltage range provides design flexibility for applications requiring lower operating voltages.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance, consistent with the original AT25SF161-SSHD-T specification.

Q: What is the significance of MSL 3 rating for W25Q16JVSNIQ? A: MSL 3 indicates a moisture sensitivity level requiring controlled storage conditions (168 hours maximum floor life after bag opening at 30°C / 60% RH). This is more restrictive than MSL 1 (unlimited floor life). Manufacturing processes must account for this requirement during component handling and assembly.