AT45DB041D-SU-2.5 Equivalent & Substitute Parts

Part Overview

The AT45DB041D-SU-2.5 is a 4Mbit FLASH memory IC with SPI interface operating at 50 MHz, manufactured by Renesas Electronics Corporation in 8-SOIC surface mount packaging. This part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The AT45DB041 series provides non-volatile memory solutions with compatible electrical and mechanical specifications across multiple product variants.

Substiute Parts

AT45DB041D-SU-2.5

Renesas Electronics CorporationIn Stock: 1951AT45DB041D-SU-2.5 Datasheet

Current PartRFQ

AT45DB041E-SHN-T

Renesas Electronics CorporationIn Stock: 37786AT45DB041E-SHN-T Datasheet

DirectRFQ

AT45DB041E-SHN-B

Renesas Electronics CorporationIn Stock: 1728AT45DB041E-SHN-B Datasheet

MFR RecommendedRFQ

AT45DB041E-SHNHA-T

Renesas Electronics CorporationIn Stock: 1295AT45DB041E-SHNHA-T Datasheet

MFR RecommendedRFQ

AT45DB041E-SHNHC-T

Renesas Electronics CorporationIn Stock: 2916AT45DB041E-SHNHC-T Datasheet

MFR RecommendedRFQ

AT45DB041E-SSHNHT-B

Renesas Electronics CorporationIn Stock: 725AT45DB041E-SSHNHT-B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT45DB041D-SU-2.5 is based on the following criteria:

Core Compatibility Parameters:

• Memory Size: 4Mbit (fixed requirement)
• Memory Format: FLASH (fixed requirement)
• Memory Interface: SPI (fixed requirement)
• Memory Organization: 264 Bytes x 2048 pages (fixed requirement)
• Package / Case: 8-SOIC (fixed requirement)
• Mounting Type: Surface Mount (fixed requirement)

Allowable Variations:

• Clock Frequency: Substitute parts operate at 85 MHz, which is backward compatible with 50 MHz applications
• Voltage Supply Range: Substitute parts support 1.65V ~ 3.6V, which encompasses the original 2.5V ~ 3.6V range
• Operating Temperature: Substitute parts support -40°C ~ 85°C or -40°C ~ 125°C, meeting or exceeding the original specification
• Packaging Options: Substitutes available in Cut Tape (CT), Tube, and Tape & Reel (TR) formats

All substitute parts share the AT45DB041 base product number and maintain identical memory architecture and SPI protocol compatibility.

Parameter Comparison

Engineering Selection Recommendations

All five substitute parts are active products manufactured by Renesas Electronics Corporation and maintain full electrical and mechanical compatibility with the AT45DB041D-SU-2.5. Selection among substitutes should be based on the following factors:

Product Status & Compliance: All substitute parts are active products with ROHS3 compliance and REACH unaffected status, ensuring long-term availability and regulatory compliance for new designs.

Packaging Format Selection:

• AT45DB041E-SHN-T: Cut Tape (CT) & Digi-Reel® format for automated assembly lines
• AT45DB041E-SHN-B: Tube packaging for manual assembly or lower-volume applications
• AT45DB041E-SHNHA-T: Tape & Reel (TR) format for high-volume production
• AT45DB041E-SHNHC-T: Tape & Reel (TR) format for high-volume production
• AT45DB041E-SSHNHT-B: Tube packaging with extended operating temperature range (-40°C ~ 125°C)

Temperature Range Consideration: The AT45DB041E-SSHNHT-B variant extends the upper operating temperature limit to 125°C, suitable for applications requiring enhanced thermal performance beyond the standard 85°C specification.

Programmability Verification: AT45DB041E-SHN-T is verified as DiGi-Electronics programmable. Other variants are not verified but maintain identical memory architecture and SPI protocol compatibility.

Frequently Asked Questions (FAQ)

Q: Can AT45DB041E series parts directly replace the AT45DB041D-SU-2.5?

A: Yes. All AT45DB041E variants are direct functional replacements. They maintain identical memory size (4Mbit), memory organization (264 Bytes x 2048 pages), SPI interface, and 8-SOIC package. The higher clock frequency (85 MHz vs. 50 MHz) and extended voltage range (1.65V ~ 3.6V vs. 2.5V ~ 3.6V) provide enhanced performance and flexibility without compromising backward compatibility.

Q: What is the difference between the packaging formats?

A: Cut Tape (CT) & Digi-Reel® format is optimized for automated pick-and-place assembly. Tube packaging is suitable for manual assembly or lower-volume applications. Tape & Reel (TR) format is standard for high-volume production runs. All formats contain identical components; the difference is in delivery and handling method.

Q: Which substitute part should I select for high-volume production?

A: AT45DB041E-SHNHA-T or AT45DB041E-SHNHC-T in Tape & Reel (TR) format are recommended for high-volume production. Both are active products with full inventory availability and ROHS3 compliance.

Q: Is the higher clock frequency (85 MHz) compatible with designs using 50 MHz?

A: Yes. The 85 MHz clock frequency is backward compatible with 50 MHz applications. The SPI interface and memory architecture remain identical, allowing direct substitution without design modifications.

Q: What is the voltage supply range difference, and does it affect compatibility?

A: The AT45DB041E series supports 1.65V ~ 3.6V, which encompasses the original 2.5V ~ 3.6V range. This extended lower voltage limit provides additional design flexibility while maintaining full compatibility with existing 2.5V supply designs.

Q: Does the AT45DB041E-SSHNHT-B extended temperature range require design changes?

A: No. The extended operating temperature range (-40°C ~ 125°C) is a superset of the original specification (-40°C ~ 85°C). It requires no design modifications and is suitable for applications requiring enhanced thermal performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All five AT45DB041E variants are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for new product designs and manufacturing.