AT45DB041D-MU-2.5 Equivalent & Substitute Parts

Part Overview

The AT45DB041D-MU-2.5 is a 4Mbit FLASH memory IC with SPI interface manufactured by Renesas Electronics Corporation. This part operates at 50 MHz and is packaged in an 8-VDFN (6x5) configuration with exposed pad. The device is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and production continuity. Substitute parts maintain the same memory capacity, organization, and core functionality while offering improved specifications and active product status.

Key Parameters

Parameter	Value
Memory Size	4Mbit
Memory Organization	264 Bytes x 2048 pages
Memory Interface	SPI
Clock Frequency	50 MHz
Voltage Supply Range	2.5V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package Type	8-VDFN Exposed Pad

Substitute Part Grouping Explanation

Substitute parts for the AT45DB041D-MU-2.5 are qualified based on the following criteria:

Electrical Compatibility:

Identical memory capacity (4Mbit) and organization (264 Bytes x 2048 pages)
SPI interface maintained across all substitutes
Operating temperature range matches (-40°C ~ 85°C)
Supply voltage range of substitutes (1.65V ~ 3.6V) encompasses the original specification (2.5V ~ 3.6V)
Clock frequency of substitutes (85 MHz) exceeds the original (50 MHz), providing backward compatibility

Mechanical Compatibility:

Surface mount technology maintained
Package variants available: 8-UDFN (5x6) and 8-SOIC configurations
All substitutes feature exposed pad design

Product Status:

Substitute parts are classified as Active, ensuring long-term availability and support
All substitutes comply with RoHS3 and REACH requirements
Moisture sensitivity improved to MSL 1 (Unlimited) compared to original MSL 3

Parameter Comparison

Parameter	AT45DB041D-MU-2.5	AT45DB041E-MHN-T	AT45DB041E-MHN-Y	AT45DB041E-SSHN-T
Memory Size	4Mbit	4Mbit	4Mbit	4Mbit
Memory Organization	264 Bytes x 2048 pages	264 Bytes x 2048 pages	264 Bytes x 2048 pages	264 Bytes x 2048 pages
Memory Interface	SPI	SPI	SPI	SPI
Clock Frequency	50 MHz	85 MHz	85 MHz	85 MHz
Write Cycle Time (Page)	4ms	3ms	3ms	3ms
Voltage Supply Range	2.5V ~ 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
Package / Case	8-VDFN Exposed Pad	8-UDFN Exposed Pad	8-UDFN Exposed Pad	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	MSL 3 (168 Hours)	MSL 1 (Unlimited)	MSL 1 (Unlimited)	MSL 1 (Unlimited)

Engineering Selection Recommendations

AT45DB041E-MHN-T (Tape & Reel Packaging)

Recommended for high-volume production environments
Active product status with established supply chain
ROHS3 compliant and REACH unaffected
Improved MSL rating reduces moisture-related field failures
33,975 units in stock

AT45DB041E-MHN-Y (Tray Packaging)

Suitable for moderate-volume applications and prototyping
Active product status with long-term availability
ROHS3 compliant and REACH unaffected
Identical electrical specifications to AT45DB041E-MHN-T
922 units in stock

AT45DB041E-SSHN-T (Cut Tape & Digi-Reel Packaging)

Appropriate for applications requiring 8-SOIC package format
Active product status with robust inventory (43,100 units)
ROHS3 compliant and REACH unaffected
Highest available stock level among substitutes
Package change from 8-VDFN to 8-SOIC requires PCB layout modification

All substitute parts exceed the original specifications in clock frequency (85 MHz vs. 50 MHz) and provide extended supply voltage range (1.65V minimum vs. 2.5V minimum), ensuring functional compatibility in existing designs.

Frequently Asked Questions (FAQ)

Q: Can AT45DB041E series parts directly replace the AT45DB041D-MU-2.5 without design changes?

A: AT45DB041E-MHN-T and AT45DB041E-MHN-Y are pin-compatible replacements using the 8-UDFN package. The AT45DB041E-SSHN-T uses an 8-SOIC package and requires PCB layout modification. All three maintain identical memory capacity, organization, and SPI interface.

Q: What are the key electrical differences between the original and substitute parts?

A: Substitute parts operate at 85 MHz compared to the original 50 MHz, reducing page write cycle time from 4ms to 3ms. Supply voltage range is extended to 1.65V minimum, providing greater design flexibility. All parts maintain the same operating temperature range and memory specifications.

Q: Why is the moisture sensitivity level (MSL) important for substitution?

A: The original part has MSL 3 (168-hour limit), requiring controlled storage and handling. Substitute parts have MSL 1 (Unlimited), eliminating moisture-related storage constraints and reducing field failure risk during extended shelf storage or humid environments.

Q: Are there packaging considerations when selecting a substitute?

A: AT45DB041E-MHN-T and AT45DB041E-MHN-Y use 8-UDFN (5x6) packages compatible with existing 8-VDFN footprints with minor layout adjustments. AT45DB041E-SSHN-T uses 8-SOIC, requiring full PCB redesign. Packaging choice depends on production volume and existing board layout constraints.

Q: What compliance certifications apply to the substitute parts?

A: All substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The original part's compliance status is not specified.

Q: Is there a performance advantage to using the higher-frequency substitute parts?

A: The 85 MHz clock frequency and reduced 3ms page write cycle time provide performance headroom. Designs operating at the original 50 MHz specification will function without modification, as the substitutes are backward compatible.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message