AT45DB161E-MHD-Y Equivalent & Substitute Parts

Part Overview

The AT45DB161E-MHD-Y is a 16Mbit FLASH memory IC manufactured by Renesas Electronics Corporation, featuring SPI interface operation at 85 MHz with 8-UDFN surface mount packaging. This device is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary to support existing applications, ensure supply chain continuity, and evaluate active alternatives for ongoing production requirements.

Substiute Parts

AT45DB161E-MHD-Y

Renesas Electronics CorporationIn Stock: 2354AT45DB161E-MHD-Y Datasheet

Current PartRFQ

AT45DB161E-MHF-T

Renesas Electronics CorporationIn Stock: 12753AT45DB161E-MHF-T Datasheet

MFR RecommendedRFQ

AT45DB161E-MHF-Y

Renesas Electronics CorporationIn Stock: 8364AT45DB161E-MHF-Y Datasheet

MFR RecommendedRFQ

AT45DQ161-MHF-Y

Renesas Electronics CorporationIn Stock: 14128AT45DQ161-MHF-Y Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT45DB161E-MHD-Y is determined by the following critical parameters:

Primary Substitution Criteria:

• Memory Size: 16Mbit (exact match required)
• Memory Format: FLASH (exact match required)
• Package / Case: 8-UDFN Exposed Pad (5x6) (exact match required)
• Clock Frequency: 85 MHz (exact match required)
• Memory Organization: 528 Bytes x 4096 pages (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Mounting Type: Surface Mount (exact match required)

Secondary Compatibility Parameters:

• Memory Interface: SPI or SPI - Quad I/O (backward compatible)
• Voltage Supply Range: Must encompass or match the original specification
• Write Cycle Time: Must meet or exceed performance requirements
• RoHS and REACH Compliance: Must maintain regulatory status

The substitute parts identified below satisfy all primary criteria and maintain compatibility with the original AT45DB161E-MHD-Y specification.

Parameter Comparison

Engineering Selection Recommendations

AT45DB161E-MHF-T (Tape & Reel Packaging)

This part is a direct functional equivalent to the AT45DB161E-MHD-Y with identical electrical specifications and performance characteristics. The primary distinction is packaging format: Tape & Reel (TR) versus Tray. AT45DB161E-MHF-T carries Active product status, indicating ongoing manufacturer support and availability. The voltage supply range extends to 2.3V minimum, providing broader operational margin. This configuration is suitable for high-volume production environments where Tape & Reel packaging is standard.

AT45DB161E-MHF-Y (Tray Packaging)

This part maintains identical electrical and performance specifications to the AT45DB161E-MHD-Y while offering Active product status. Packaging remains Tray format, matching the original part's distribution method. The voltage supply range extends to 2.3V minimum. This substitute provides direct compatibility with existing procurement and assembly processes without packaging format changes.

AT45DQ161-MHF-Y (Quad I/O Interface)

This part shares the same memory capacity, organization, package, and thermal specifications as the AT45DB161E-MHD-Y. The key distinction is the memory interface: SPI - Quad I/O versus standard SPI. This provides enhanced data throughput capability while maintaining backward compatibility in SPI mode. Page write cycle time extends to 6ms versus 4ms. Active product status ensures manufacturer support. Selection of this part requires confirmation that the application controller supports Quad I/O operation or can operate in standard SPI mode.

All substitute parts maintain ROHS3 compliance, REACH Unaffected status, and MSL 1 rating, ensuring regulatory and environmental compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can AT45DB161E-MHF-T replace AT45DB161E-MHD-Y in existing designs?

A: Yes. Both parts are electrically and functionally identical. The difference is packaging format: Tape & Reel versus Tray. If your assembly process accommodates Tape & Reel format, this part provides a direct substitute with Active product status.

Q: What is the significance of the voltage supply range difference (2.5V ~ 3.6V versus 2.3V ~ 3.6V)?

A: The substitute parts (AT45DB161E-MHF-T, AT45DB161E-MHF-Y, AT45DQ161-MHF-Y) support operation down to 2.3V, extending the lower voltage margin by 0.2V. This provides additional operational flexibility. If your application operates at 2.5V or above, both specifications are compatible.

Q: Is AT45DQ161-MHF-Y a direct replacement for AT45DB161E-MHD-Y?

A: AT45DQ161-MHF-Y is functionally compatible but not identical. It features SPI - Quad I/O interface instead of standard SPI. In standard SPI mode, it operates identically to the original part. If your controller supports Quad I/O, this part offers enhanced data throughput. If your controller uses only standard SPI, the part functions normally in SPI mode.

Q: What is the difference between Tray and Tape & Reel packaging?

A: Tray packaging is used for lower-volume orders and manual assembly processes. Tape & Reel packaging is standard for high-volume automated assembly. Both contain identical components; the difference is distribution format and handling method.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. All substitute parts listed (AT45DB161E-MHF-T, AT45DB161E-MHF-Y, AT45DQ161-MHF-Y) are ROHS3 Compliant and REACH Unaffected, matching the original AT45DB161E-MHD-Y specification.

Q: Why is the original AT45DB161E-MHD-Y marked "Not For New Designs"?

A: This status indicates the part has reached end-of-life and is no longer recommended for new product development. Existing inventory remains available for legacy application support. For new designs, the Active substitute parts (AT45DB161E-MHF-T, AT45DB161E-MHF-Y, or AT45DQ161-MHF-Y) are recommended.

Q: Does the page write cycle time difference (4ms versus 6ms for AT45DQ161-MHF-Y) affect compatibility?

A: The extended write cycle time (6ms) is slower but does not affect functional compatibility. If your application has strict timing requirements for page write operations, verify that 6ms meets your performance specifications before selecting AT45DQ161-MHF-Y.