AT45DB041D-SU Equivalent & Substitute Parts

Part Overview

The AT45DB041D-SU is a 4Mbit SPI FLASH memory IC manufactured by Renesas Electronics Corporation in an 8-SOIC surface mount package. This part operates at 66 MHz with a supply voltage range of 2.7V to 3.6V and is rated for -40°C to 85°C operating temperature. The AT45DB041D-SU is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Memory Size	4Mbit
Memory Format	FLASH
Memory Interface	SPI
Clock Frequency	66 MHz
Memory Organization	264 Bytes x 2048 pages
Write Cycle Time - Page	4ms
Voltage - Supply	2.7V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.209", 5.30mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the AT45DB041D-SU is based on the following criteria:

Core Compatibility Requirements:

Memory size: 4Mbit
Memory format: FLASH
Memory interface: SPI
Memory organization: 264 Bytes x 2048 pages
Package / Case: 8-SOIC (0.209", 5.30mm Width)
Mounting type: Surface Mount
Moisture Sensitivity Level: 1 (Unlimited)

Allowable Parameter Variations:

Clock frequency: Substitute parts operate at 85 MHz, which exceeds the original 66 MHz specification and is backward compatible
Voltage supply range: Substitute parts support 1.65V ~ 3.6V, which encompasses the original 2.7V ~ 3.6V range
Operating temperature: Most substitutes maintain -40°C ~ 85°C; one variant extends to -40°C ~ 125°C
Write cycle time: Substitute parts specify 8µs word write and 3ms page write, meeting or exceeding original performance

All substitute parts share the AT45DB041 base product number and are manufactured by Renesas Electronics Corporation. Substitutes are available in active product status with multiple packaging options.

Parameter Comparison

Parameter	AT45DB041D-SU	AT45DB041E-SHN-T	AT45DB041E-SHN-B	AT45DB041E-SHNHA-T	AT45DB041E-SHNHC-T	AT45DB041E-SSHNHT-B
Product Status	Obsolete	Active	Active	Active	Active	Active
Memory Size	4Mbit	4Mbit	4Mbit	4Mbit	4Mbit	4Mbit
Memory Interface	SPI	SPI	SPI	SPI	SPI	SPI
Clock Frequency	66 MHz	85 MHz	85 MHz	85 MHz	85 MHz	85 MHz
Memory Organization	264 Bytes x 2048 pages	264 Bytes x 2048 pages	264 Bytes x 2048 pages	264 Bytes x 2048 pages	264 Bytes x 2048 pages	264 Bytes x 2048 pages
Write Cycle Time - Page	4ms	3ms	3ms	3ms	3ms	3ms
Voltage - Supply	2.7V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Packaging Option	-	Cut Tape & Digi-Reel	Tube	Tape & Reel	Tape & Reel	Tube
RoHS Status	-	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	-	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All five substitute parts are manufactured by Renesas Electronics Corporation and maintain active product status, ensuring long-term availability and supply chain stability. Each substitute is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

AT45DB041E-SHN-T is available in Cut Tape and Digi-Reel packaging with verified DiGi-Electronics programmability status and the highest inventory level (37,690 pcs), making it the primary choice for volume production.

AT45DB041E-SHN-B is supplied in Tube packaging with verified programmability status and moderate inventory (1,701 pcs), suitable for applications requiring tube format delivery.

AT45DB041E-SHNHA-T and AT45DB041E-SHNHC-T are supplied in Tape & Reel format with inventories of 1,210 and 2,840 pcs respectively. These parts carry unverified programmability status.

AT45DB041E-SSHNHT-B extends the operating temperature range to -40°C ~ 125°C and is supplied in Tube packaging with 675 pcs inventory. This variant is suitable for high-temperature applications and carries unverified programmability status.

Frequently Asked Questions (FAQ)

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

A: Yes. All AT45DB041E variants maintain identical memory capacity (4Mbit), memory organization (264 Bytes x 2048 pages), SPI interface, and 8-SOIC package dimensions. The higher clock frequency (85 MHz vs. 66 MHz) and extended voltage range (1.65V ~ 3.6V vs. 2.7V ~ 3.6V) provide backward compatibility.

Q: What is the difference between the packaging options?

A: AT45DB041E-SHN-T is supplied in Cut Tape and Digi-Reel format for automated assembly. AT45DB041E-SHN-B and AT45DB041E-SSHNHT-B are supplied in Tube format for manual handling. AT45DB041E-SHNHA-T and AT45DB041E-SHNHC-T are supplied in Tape & Reel format for high-volume automated production.

Q: Which substitute should I select for new designs?

A: AT45DB041E-SHN-T is recommended for new designs due to active status, verified programmability, and highest inventory availability. If high-temperature operation (-40°C ~ 125°C) is required, select AT45DB041E-SSHNHT-B.

Q: Are all substitutes RoHS and REACH compliant?

A: Yes. All five substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

Q: What is the significance of DiGi-Electronics programmability verification?

A: Verified programmability indicates the part has been tested and confirmed compatible with DiGi-Electronics programming equipment. Unverified parts have not undergone this specific testing but remain functionally equivalent.

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