AT45DB041D-SSU Equivalent & Substitute Parts

Part Overview

The AT45DB041D-SSU is a 4Mbit SPI FLASH memory IC 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 AT45DB041D-SSU operates at 66 MHz with a supply voltage range of 2.7V to 3.6V and is suitable for applications requiring non-volatile FLASH memory with SPI interface.

Substiute Parts

AT45DB041D-SSU

Renesas Electronics CorporationIn Stock: 1650AT45DB041D-SSU Datasheet

Current PartRFQ

AT45DB041E-SSHN-T

Renesas Electronics CorporationIn Stock: 43113AT45DB041E-SSHN-T Datasheet

DirectRFQ

AT45DB041E-SHNHT-B

Renesas Electronics CorporationIn Stock: 886AT45DB041E-SHNHT-B Datasheet

MFR RecommendedRFQ

AT45DB041E-SSHNHA-T

Renesas Electronics CorporationIn Stock: 3290AT45DB041E-SSHNHA-T Datasheet

MFR RecommendedRFQ

AT45DB041E-SSHNHC-T

Renesas Electronics CorporationIn Stock: 3718AT45DB041E-SSHNHC-T Datasheet

MFR RecommendedRFQ

AT45DB041E-SSHN-B

Adesto TechnologiesIn Stock: 2010AT45DB041E-SSHN-B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AT45DB041D-SSU is based on the following critical parameters that must remain compatible:

• Memory Capacity: 4Mbit (non-negotiable)
• Memory Format & Technology: FLASH (non-negotiable)
• Memory Interface: SPI (non-negotiable)
• Memory Organization: 264 Bytes x 2048 pages (non-negotiable)
• Package Type: 8-SOIC with 0.154" width, 3.90mm (non-negotiable)
• Mounting Type: Surface Mount (non-negotiable)
• Moisture Sensitivity Level: 1 (Unlimited) (non-negotiable)

The substitute parts listed below are members of the AT45DB041 base product family. All substitutes maintain identical memory capacity, organization, interface protocol, and physical packaging. The primary differences among substitutes are clock frequency (85 MHz vs. 66 MHz), supply voltage range (1.65V ~ 3.6V vs. 2.7V ~ 3.6V), operating temperature range variants, packaging format (Tape & Reel, Tube, or Cut Tape), and product status (Active vs. Obsolete).

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are active production components from the AT45DB041 family and are suitable replacements for the obsolete AT45DB041D-SSU. Selection among substitutes should be based on the following criteria:

For designs requiring extended temperature operation: AT45DB041E-SHNHT-B supports -40°C to 125°C operating range, compared to -40°C to 85°C for other substitutes.

For designs with lower supply voltage requirements: All AT45DB041E variants support 1.65V minimum supply voltage, providing greater flexibility than the original part's 2.7V minimum.

For improved performance: All AT45DB041E variants operate at 85 MHz clock frequency with 3ms page write cycle time, compared to the original 66 MHz and 4ms specifications.

For RoHS compliance: All active substitutes are ROHS3 compliant, addressing environmental and regulatory requirements.

For packaging and supply chain considerations: AT45DB041E-SSHN-T (Cut Tape & Digi-Reel) and AT45DB041E-SHNHT-B (Tube) offer different packaging formats suitable for various manufacturing processes. Tape & Reel variants (AT45DB041E-SSHNHA-T and AT45DB041E-SSHNHC-T) are optimized for high-volume automated assembly.

For manufacturer preference: Renesas Electronics variants (AT45DB041E-SSHN-T, AT45DB041E-SHNHT-B, AT45DB041E-SSHNHA-T, AT45DB041E-SSHNHC-T) are direct successors. The Adesto Technologies variant (AT45DB041E-SSHN-B) represents an alternative manufacturer source for the same base product.

Frequently Asked Questions (FAQ)

Q: Can AT45DB041E variants directly replace AT45DB041D-SSU in existing designs?

A: Yes. All AT45DB041E variants maintain identical memory capacity (4Mbit), organization (264 Bytes x 2048 pages), SPI interface, and 8-SOIC packaging. The higher clock frequency (85 MHz vs. 66 MHz) and lower minimum supply voltage (1.65V vs. 2.7V) are backward compatible with designs specified for the original part.

Q: What is the difference between AT45DB041E-SSHNHA-T and AT45DB041E-SSHNHC-T?

A: Both parts are identical in electrical specifications and packaging (Tape & Reel). The difference lies in packaging designation codes assigned by the manufacturer. Both are suitable for automated assembly processes.

Q: Why do some substitutes have different operating temperature ranges?

A: AT45DB041E-SHNHT-B extends the upper operating temperature to 125°C, making it suitable for applications in high-temperature environments. Other variants maintain the standard -40°C to 85°C range. Selection depends on application thermal requirements.

Q: Is the Adesto Technologies variant (AT45DB041E-SSHN-B) equivalent to Renesas variants?

A: Yes. AT45DB041E-SSHN-B is functionally equivalent with identical memory specifications, SPI interface, and 8-SOIC packaging. It represents an alternative manufacturer source for the same base product family.

Q: What packaging formats are available among the substitutes?

A: Three packaging formats are available: Cut Tape & Digi-Reel (AT45DB041E-SSHN-T), Tube (AT45DB041E-SHNHT-B and AT45DB041E-SSHN-B), and Tape & Reel (AT45DB041E-SSHNHA-T and AT45DB041E-SSHNHC-T). Selection depends on manufacturing process requirements and volume.

Q: Are all substitutes RoHS compliant?

A: Yes. All AT45DB041E variants are ROHS3 compliant, meeting environmental and regulatory standards for new designs.

Q: What is the significance of the lower minimum supply voltage in AT45DB041E variants?

A: The extended supply voltage range (1.65V ~ 3.6V vs. 2.7V ~ 3.6V) provides greater design flexibility, allowing operation in low-power applications and systems with reduced supply voltage margins.