AT45DB161E-SHD-B Equivalent & Substitute Parts

Part Overview

The AT45DB161E-SHD-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 existing designs, facilitate production continuity, and enable migration to active product lines where applicable.

Substiute Parts

AT45DB161E-SHD-B

Renesas Electronics CorporationIn Stock: 1840AT45DB161E-SHD-B Datasheet

Current PartRFQ

AT45DB161E-SHFHA-T

Renesas Electronics CorporationIn Stock: 2104AT45DB161E-SHFHA-T Datasheet

MFR RecommendedRFQ

AT45DB161E-SHFHC-T

Renesas Electronics CorporationIn Stock: 1187AT45DB161E-SHFHC-T Datasheet

MFR RecommendedRFQ

AT45DQ161-SHF-B

Renesas Electronics CorporationIn Stock: 1104AT45DQ161-SHF-B Datasheet

MFR RecommendedRFQ

AT45DQ161-SHFHD-T

Renesas Electronics CorporationIn Stock: 3190AT45DQ161-SHFHD-T Datasheet

MFR RecommendedRFQ

AT45DB161E-SHF-B

Renesas Electronics CorporationIn Stock: 20437AT45DB161E-SHF-B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AT45DB161E-SHD-B is determined by the following critical parameters:

• Memory capacity (16Mbit)
• Memory interface type (SPI or SPI - Quad I/O)
• Package type (8-SOIC)
• Physical dimensions (0.209", 5.30mm Width)
• Supply voltage compatibility
• Operating temperature range

Substitute parts are grouped into two categories:

Category 1: Direct SPI Interface Substitutes (Pin-Compatible) Parts maintaining standard SPI interface with identical memory organization and package specifications. These include AT45DB161E-SHFHA-T, AT45DB161E-SHFHC-T, and AT45DB161E-SHF-B. These parts are functionally equivalent with packaging variations (Cut Tape, Tape & Reel, or Tube).

Category 2: Enhanced Interface Substitutes (SPI - Quad I/O) Parts featuring Quad I/O capability while maintaining 16Mbit capacity and 8-SOIC packaging. These include AT45DQ161-SHF-B and AT45DQ161-SHFHD-T. These parts offer extended temperature range and enhanced I/O performance but require interface compatibility verification in the target application.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (SPI Interface Required):

Select AT45DB161E-SHF-B when tube packaging is required and maximum inventory availability is a priority (20,400 pcs in stock). This part maintains identical electrical specifications and SPI interface compatibility with the AT45DB161E-SHD-B while offering active product status.

Select AT45DB161E-SHFHA-T or AT45DB161E-SHFHC-T when alternative packaging formats (Cut Tape or Tape & Reel) are acceptable. Both parts are active products with identical core specifications. AT45DB161E-SHFHC-T offers higher inventory (1,170 pcs) in Tape & Reel format suitable for automated assembly processes.

For Enhanced Performance (Quad I/O Interface):

Select AT45DQ161-SHFHD-T when extended operating temperature range (-40°C ~ 105°C) and Quad I/O interface capability are compatible with the target application. This part offers the highest inventory availability (3,106 pcs) among Quad I/O variants and is packaged in Tape & Reel format.

Select AT45DQ161-SHF-B when Quad I/O capability is required with tube packaging. This part supports the extended temperature range and is available in 1,091 pcs inventory.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity level (MSL 1 - Unlimited) as the original part.

Frequently Asked Questions (FAQ)

Q: Can AT45DQ161 parts directly replace AT45DB161E parts?

A: AT45DQ161 parts are electrically compatible in terms of memory capacity, package, and core timing specifications. However, the Quad I/O interface requires the host system to support quad mode operation. If the application uses only standard SPI mode, AT45DB161E substitutes are recommended. If quad mode is supported, AT45DQ161 parts offer extended temperature range capability.

Q: What is the difference between packaging formats (Tube, Cut Tape, Tape & Reel)?

A: Tube packaging is suitable for manual handling and lower-volume applications. Cut Tape & Digi-Reel format provides individual component access with reel compatibility. Tape & Reel format is optimized for high-speed automated assembly processes. All formats contain identical components; selection depends on assembly methodology and volume requirements.

Q: Are there voltage supply differences between substitute parts?

A: The original AT45DB161E-SHD-B operates at 2.5V ~ 3.6V. All substitute parts operate at 2.3V ~ 3.6V, providing extended lower voltage capability. This represents improved compatibility with lower-voltage system designs and does not create incompatibility with 2.5V minimum systems.

Q: What is the significance of "Not For New Designs" status?

A: This designation indicates the AT45DB161E-SHD-B has reached end-of-life. All listed substitute parts carry "Active" status, ensuring continued manufacturing support, availability, and compliance with current standards. Migration to active parts is recommended for long-term design sustainability.

Q: How do write cycle times differ between SPI and Quad I/O variants?

A: AT45DB161E SPI parts specify 4ms page write cycle time. AT45DQ161 Quad I/O parts specify 6ms page write cycle time. Word write cycle time remains 8µs for all variants. This difference reflects the enhanced interface architecture and does not impact typical application performance in sequential write operations.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance, REACH unaffected status, and identical EAR99 export classification as the original AT45DB161E-SHD-B.