AT45DB161E-SSHD-B Equivalent & Substitute Parts

Part Overview

The AT45DB161E-SSHD-B is a 16Mbit FLASH memory IC manufactured by Renesas Electronics Corporation, featuring SPI interface operation at 85 MHz in an 8-SOIC surface mount package. This part is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary to support legacy system maintenance, ensure supply chain continuity, and facilitate design transitions to active product alternatives.

Substiute Parts

AT45DB161E-SSHD-B

Renesas Electronics CorporationIn Stock: 1341AT45DB161E-SSHD-B Datasheet

Current PartRFQ

AT45DB161E-SSHF-B

Renesas Electronics CorporationIn Stock: 20644AT45DB161E-SSHF-B Datasheet

MFR RecommendedRFQ

AT45DB161E-SSHF-T

Renesas Electronics CorporationIn Stock: 3907AT45DB161E-SSHF-T Datasheet

MFR RecommendedRFQ

AT45DB161E-SSHFHA-T

Renesas Electronics CorporationIn Stock: 1556AT45DB161E-SSHFHA-T Datasheet

MFR RecommendedRFQ

AT45DB161E-SSHFHC-T

Renesas Electronics CorporationIn Stock: 96291AT45DB161E-SSHFHC-T Datasheet

MFR RecommendedRFQ

AT45DQ161-SSHF-B

Renesas Electronics CorporationIn Stock: 992AT45DQ161-SSHF-B Datasheet

MFR RecommendedRFQ

AT45DQ161-SSHFHD-T

Renesas Electronics CorporationIn Stock: 1251AT45DQ161-SSHFHD-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AT45DB161E-SSHD-B is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Memory Size: 16Mbit (exact match required)
• Memory Format: FLASH (exact match required)
• Memory Interface: SPI (standard SPI interface required)
• Clock Frequency: 85 MHz (exact match required)
• Package / Case: 8-SOIC (exact match required)
• Mounting Type: Surface Mount (exact match required)

Secondary Compatibility Factors:

• Voltage Supply Range: Minimum 2.5V support required; extended ranges (2.3V) are acceptable
• Operating Temperature: Minimum -40°C to 85°C required; extended ranges (to 105°C) are acceptable
• RoHS Compliance: ROHS3 Compliant (required)

Substitute parts are grouped into two categories based on memory interface capability:

Category 1: Standard SPI Interface (AT45DB161E Series) Parts maintaining identical SPI interface specification. Differences are limited to packaging format (Tube, Bulk, Cut Tape, Tape & Reel) and product status (Active vs. Not For New Designs).

Category 2: Extended Interface (AT45DQ161 Series) Parts featuring SPI - Quad I/O interface, providing backward compatibility with standard SPI operation while offering enhanced quad I/O capability. These parts maintain identical memory size, organization, and package but extend the memory interface specification.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical SPI Interface):

Select from the AT45DB161E series when maintaining existing SPI-only interface requirements. All AT45DB161E variants are electrically and mechanically compatible with the AT45DB161E-SSHD-B. Selection among AT45DB161E-SSHF-B, AT45DB161E-SSHF-T, AT45DB161E-SSHFHA-T, and AT45DB161E-SSHFHC-T is determined by packaging and supply requirements. All variants are Active products with ROHS3 compliance and support extended voltage range (2.3V minimum).

For Enhanced Capability (SPI - Quad I/O Interface):

The AT45DQ161 series provides backward compatibility with standard SPI operation while enabling quad I/O functionality. AT45DQ161-SSHF-B and AT45DQ161-SSHFHD-T are suitable for applications requiring or benefiting from quad I/O capability. AT45DQ161-SSHFHD-T extends operating temperature to 105°C, supporting higher thermal environments.

Compliance and Status Considerations:

All substitute parts maintain ROHS3 compliance and REACH unaffected status. All substitute parts are classified as Active products, ensuring long-term availability and manufacturing support compared to the Not For New Designs status of the original part.

Frequently Asked Questions (FAQ)

Q: Can AT45DB161E-SSHF-B directly replace AT45DB161E-SSHD-B?

A: Yes. Both parts share identical electrical specifications (16Mbit FLASH, SPI interface, 85 MHz, 8-SOIC package). The primary difference is packaging format (Bulk vs. Tube) and product status (Active vs. Not For New Designs). Electrical and mechanical compatibility is complete.

Q: What is the difference between AT45DB161E and AT45DQ161 series?

A: The AT45DB161E series operates exclusively in standard SPI mode. The AT45DQ161 series supports both standard SPI and Quad I/O modes, providing enhanced data throughput capability. Both series maintain identical memory size, organization, clock frequency, and package specifications. AT45DQ161 parts are backward compatible with SPI-only applications.

Q: Does the extended voltage range (2.3V vs. 2.5V) affect compatibility?

A: No. The AT45DB161E-SSHD-B specifies 2.5V ~ 3.6V operation. Substitute parts with 2.3V ~ 3.6V range are fully compatible and provide additional margin at lower voltages. Applications operating at 2.5V or above experience no functional difference.

Q: What packaging formats are available, and how do they differ?

A: Tube packaging (AT45DB161E-SSHD-B, AT45DQ161-SSHF-B) is suitable for lower-volume applications. Bulk packaging (AT45DB161E-SSHF-B) supports high-volume production. Cut Tape & Digi-Reel® (AT45DB161E-SSHF-T, AT45DB161E-SSHFHA-T) and Tape & Reel (AT45DB161E-SSHFHC-T, AT45DQ161-SSHFHD-T) formats are optimized for automated assembly. All formats contain identical die and electrical specifications.

Q: Is AT45DQ161-SSHFHD-T suitable for high-temperature applications?

A: Yes. AT45DQ161-SSHFHD-T supports -40°C ~ 105°C operating temperature, compared to -40°C ~ 85°C for other variants. This extended range accommodates applications requiring higher thermal operation while maintaining all other electrical and mechanical specifications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the original AT45DB161E-SSHD-B.