AT25DF041A-MHF-T Equivalent & Substitute Parts

Part Overview

The AT25DF041A-MHF-T is a 4Mbit SPI FLASH memory IC manufactured by Renesas Electronics Corporation in an 8-UDFN (5x6) surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The part operates at 50 MHz clock frequency with a supply voltage range of 2.3V to 3.6V and supports standard SPI interface protocols for embedded systems and IoT applications.

Key Parameters

Parameter	Value
Memory Size	4Mbit
Memory Organization	512K x 8
Memory Interface	SPI
Clock Frequency	50 MHz
Voltage Supply Range	2.3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Package Type	8-UDFN Exposed Pad (5x6)
Mounting Type	Surface Mount
Write Cycle Time (Word/Page)	7µs / 5ms

Substitute Part Grouping Explanation

Substitution eligibility for the AT25DF041A-MHF-T is determined by the following critical parameters:

Memory Capacity: Must be 4Mbit with 512K x 8 organization
Interface Protocol: Must support SPI interface
Package: Must be 8-UDFN Exposed Pad (5x6) surface mount
Voltage Compatibility: Supply voltage range must encompass or be compatible with 2.3V ~ 3.6V
Operating Temperature: Must support -40°C ~ 85°C minimum range
Clock Frequency: Minimum 50 MHz operation required

All substitute parts listed meet these core electrical and mechanical requirements. Differences in clock frequency, write cycle time, voltage range extensions, and temperature range extensions represent performance enhancements or expanded operational capabilities rather than functional incompatibilities.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Voltage Supply	Operating Temperature	Package	Product Status	Packaging Type
AT25DF041A-MHF-T	Renesas Electronics	4Mbit	50 MHz	2.3V ~ 3.6V	-40°C ~ 85°C	8-UDFN (5x6)	Obsolete	-
AT25DF041B-MHN-Y	Renesas Electronics	4Mbit	104 MHz	1.65V ~ 3.6V	-40°C ~ 85°C	8-UDFN (5x6)	Active	Tray
AT25XE041B-MHN-T	Renesas Electronics	4Mbit	85 MHz	1.65V ~ 3.6V	-40°C ~ 85°C	8-UDFN (5x6)	Active	Tape & Reel
AT25XE041B-MHN-Y	Renesas Electronics	4Mbit	85 MHz	1.65V ~ 3.6V	-40°C ~ 85°C	8-UDFN (5x6)	Active	Tray
AT25XE041B-MHNHR-T	Renesas Electronics	4Mbit	85 MHz	1.65V ~ 3.6V	-40°C ~ 125°C	8-UDFN (5x6)	Active	Tape & Reel
AT25XV041B-MHV-T	Renesas Electronics	4Mbit	85 MHz	1.65V ~ 4.4V	-40°C ~ 85°C	8-UDFN (5x6)	Active	Cut Tape & Digi-Reel

Engineering Selection Recommendations

All substitute parts are manufactured by Renesas Electronics Corporation and maintain identical memory capacity, organization, and package form factor. Selection among active alternatives should be based on:

AT25DF041B-MHN-Y: Active product status with highest clock frequency (104 MHz) and lowest minimum supply voltage (1.65V). Suitable for designs requiring maximum performance headroom. Available in Tray packaging.

AT25XE041B-MHN-T: Active product with 85 MHz clock frequency and extended voltage range (1.65V ~ 3.6V). Supplied in Tape & Reel packaging for automated assembly processes.

AT25XE041B-MHN-Y: Active product with identical electrical specifications to AT25XE041B-MHN-T but supplied in Tray packaging for manual or semi-automated assembly.

AT25XE041B-MHNHR-T: Active product with extended operating temperature range (-40°C ~ 125°C) suitable for high-temperature applications. Supplied in Tape & Reel packaging. RoHS3 and REACH compliant.

AT25XV041B-MHV-T: Active product with extended supply voltage range (1.65V ~ 4.4V) for applications requiring higher voltage tolerance. Supplied in Cut Tape & Digi-Reel packaging. RoHS3 and REACH compliant.

Frequently Asked Questions (FAQ)

Q: Can AT25DF041B-MHN-Y directly replace AT25DF041A-MHF-T?

A: Yes. Both parts share identical memory capacity (4Mbit), organization (512K x 8), SPI interface, and 8-UDFN package. The substitute operates at higher clock frequency (104 MHz vs. 50 MHz) and lower minimum supply voltage (1.65V vs. 2.3V), providing enhanced performance compatibility.

Q: What is the difference between AT25XE041B and AT25XV041B series?

A: Both are 4Mbit SPI FLASH devices in 8-UDFN packages. AT25XE041B operates at 1.65V ~ 3.6V supply voltage with -40°C ~ 85°C or -40°C ~ 125°C temperature ranges. AT25XV041B operates at extended voltage range (1.65V ~ 4.4V) with -40°C ~ 85°C temperature range.

Q: Does packaging type affect electrical compatibility?

A: No. Tray, Tape & Reel, and Cut Tape & Digi-Reel packaging types are logistics and assembly considerations only. All parts with identical part numbers (excluding packaging suffix) have identical electrical specifications and are functionally interchangeable.

Q: Which substitute offers the widest operating temperature range?

A: AT25XE041B-MHNHR-T supports -40°C ~ 125°C, extending the upper temperature limit by 40°C compared to the original AT25DF041A-MHF-T (-40°C ~ 85°C).

Q: Are all substitute parts RoHS3 compliant?

A: AT25DF041B-MHN-Y, AT25XE041B-MHN-T, AT25XE041B-MHN-Y, AT25XE041B-MHNHR-T, and AT25XV041B-MHV-T are all RoHS3 compliant. The original AT25DF041A-MHF-T compliance status was not specified in available documentation.

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