AT45DB161E-SSHD-B Equivalent & Substitute Parts

Part Overview

The AT45DB161E-SSHD-B is a 16Mbit Serial Peripheral Interface (SPI) FLASH memory IC manufactured by Microchip Technology, packaged in an 8-SOIC surface mount configuration. This non-volatile memory device operates at 85 MHz and is designed for embedded systems requiring reliable data storage with SPI interface compatibility.

The main part is classified as Obsolete, which necessitates identification of functionally equivalent alternatives for ongoing production and maintenance applications. Substitute parts must maintain electrical and mechanical compatibility while meeting current availability and compliance requirements.

Substiute Parts

AT45DB161E-SSHD-B

Microchip TechnologyIn Stock: 1372AT45DB161E-SSHD-B Datasheet

Current PartRFQ

AT45DB161E-SSHD-B

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

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AT45DB161E-SSHD-B are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Primary Matching Criteria:

• Memory Size: 16Mbit (exact match required)
• Memory Format: FLASH (exact match required)
• Memory Interface: SPI (exact match required)
• Clock Frequency: 85 MHz (exact match required)
• Memory Organization: 528 Bytes x 4096 pages (exact match required)
• Voltage Supply Range: 2.5V ~ 3.6V (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Package Type: 8-SOIC (exact match required)
• Mounting Type: Surface Mount (exact match required)

Secondary Compliance Criteria:

• RoHS3 Compliance
• Moisture Sensitivity Level 1
• REACH Unaffected status

The substitute part AT45DB161E-SSHD-B from Renesas Electronics Corporation meets all primary electrical and mechanical parameters. Variations in write cycle time (page write: 6ms vs. 4ms) represent performance improvements and do not preclude substitution, as faster write cycles maintain backward compatibility with designs specified for the original part.

Parameter Comparison

Engineering Selection Recommendations

The AT45DB161E-SSHD-B from Renesas Electronics Corporation is electrically and mechanically equivalent to the Microchip original. Both parts maintain identical core specifications for memory capacity, interface protocol, voltage supply, temperature range, and physical packaging.

Compliance Status: Both the original and substitute part maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for current production environments.

Product Status Consideration: While the original part is classified as Obsolete and the substitute is classified as Not For New Designs, the substitute remains the functionally appropriate alternative when AT45DB161E-SSHD-B devices are required for legacy system support, maintenance, or field replacement applications.

Performance Note: The substitute part exhibits improved page write cycle time (4ms vs. 6ms), which represents a performance enhancement and maintains full backward compatibility with existing circuit designs and firmware implementations.

Frequently Asked Questions (FAQ)

Q: Can the Renesas AT45DB161E-SSHD-B directly replace the Microchip AT45DB161E-SSHD-B?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: 16Mbit capacity, SPI interface, 85 MHz operation, 8-SOIC packaging, and identical voltage and temperature specifications. No circuit modifications are required.

Q: What is the significance of the different write cycle times (6ms vs. 4ms)?

A: The Renesas part achieves faster page write cycles, which is a performance improvement. This does not affect compatibility; designs specified for the original 6ms write time will function correctly with the faster 4ms specification.

Q: Are both parts suitable for new designs?

A: The original Microchip part is Obsolete. The Renesas substitute is classified as Not For New Designs. For new design applications, consultation with component suppliers regarding current production alternatives is recommended.

Q: Do both parts meet current compliance standards?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: Is the 8-SOIC package identical between both parts?

A: Yes. Both parts use the same 8-SOIC package with 0.154" (3.90mm) width, ensuring identical PCB footprint and assembly compatibility.

Q: What is the Moisture Sensitivity Level, and does it affect handling?

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling procedures for surface mount components apply.