AT25DF041B-SSHNHR-T Equivalent & Substitute Parts

Part Overview

The AT25DF041B-SSHNHR-T is a 4Mbit Serial Peripheral Interface (SPI) FLASH memory IC manufactured by Renesas Electronics Corporation. This non-volatile memory device operates at 85 MHz and is packaged in an 8-SOIC surface mount configuration. The part is currently in active production status with verified programmability through DiGi-Electronics. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling direct replacement in applications where the primary part becomes unavailable or when inventory constraints require alternative sourcing.

Key Parameters

Parameter	Value
Memory Size	4Mbit
Memory Organization	512K x 8
Memory Interface	SPI
Clock Frequency	85 MHz
Voltage Supply Range	1.7V ~ 3.6V
Operating Temperature	-40°C ~ 125°C
Package Type	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the AT25DF041B-SSHNHR-T are qualified based on the following critical parameters: 4Mbit memory capacity, 512K x 8 organization, SPI interface protocol, 8-SOIC package footprint, surface mount technology, and RoHS3 compliance. The substitution logic prioritizes electrical compatibility within the specified voltage and temperature operating ranges, along with mechanical interchangeability in the identical package form factor.

Three substitute parts meet these criteria:

AT25XE041B-SSHN-T and AT25XE041B-SSHNHR-T are Renesas Electronics variants within the same product family, maintaining identical memory capacity, organization, interface, and package specifications. Both parts are RoHS3 compliant and support the same SPI protocol.

W25X40CLSNIG is a Winbond Electronics alternative offering equivalent 4Mbit capacity, 512K x 8 organization, and SPI interface in the identical 8-SOIC package. This part operates at 104 MHz, exceeding the original specification, and maintains RoHS3 compliance.

Parameter Comparison

Parameter	AT25DF041B-SSHNHR-T	AT25XE041B-SSHN-T	AT25XE041B-SSHNHR-T	W25X40CLSNIG
Manufacturer	Renesas Electronics	Renesas Electronics	Renesas Electronics	Winbond Electronics
Memory Size	4Mbit	4Mbit	4Mbit	4Mbit
Memory Organization	512K x 8	512K x 8	512K x 8	512K x 8
Memory Interface	SPI	SPI	SPI	SPI
Clock Frequency	85 MHz	85 MHz	85 MHz	104 MHz
Voltage Supply Range	1.7V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	2.3V ~ 3.6V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts maintain active production status and RoHS3 compliance, meeting regulatory requirements for new designs and production environments.

AT25XE041B-SSHNHR-T provides the closest electrical alignment with the original AT25DF041B-SSHNHR-T, matching the full operating temperature range of -40°C to 125°C. This part is recommended for applications requiring extended temperature operation.

AT25XE041B-SSHN-T operates within a reduced temperature range (-40°C to 85°C) and exhibits a marginally lower minimum supply voltage (1.65V versus 1.7V). Selection of this part requires verification that the application does not exceed 85°C operating temperature.

W25X40CLSNIG from Winbond Electronics operates at 104 MHz, providing performance headroom above the 85 MHz specification. The minimum supply voltage is 2.3V, which is higher than the original specification. This part is suitable for applications where the supply voltage remains above 2.3V and operating temperature does not exceed 85°C.

Frequently Asked Questions (FAQ)

Q: Can AT25XE041B-SSHN-T be used as a direct replacement for AT25DF041B-SSHNHR-T?

A: AT25XE041B-SSHN-T is electrically compatible for applications operating within -40°C to 85°C. Applications requiring operation above 85°C require AT25XE041B-SSHNHR-T instead.

Q: What is the primary difference between AT25XE041B-SSHN-T and AT25XE041B-SSHNHR-T?

A: Both parts are identical except for operating temperature range. AT25XE041B-SSHN-T operates to 85°C maximum, while AT25XE041B-SSHNHR-T extends to 125°C.

Q: Is W25X40CLSNIG pin-compatible with the original part?

A: Yes. W25X40CLSNIG uses the identical 8-SOIC package footprint and maintains SPI interface protocol compatibility. Verify that the application supply voltage remains above 2.3V minimum.

Q: Can W25X40CLSNIG operate at the same clock frequency as AT25DF041B-SSHNHR-T?

A: Yes. W25X40CLSNIG operates at 104 MHz, which exceeds the 85 MHz specification of the original part. The higher frequency does not prevent operation at lower clock speeds.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant and suitable for applications with RoHS compliance requirements.

Q: What packaging format is available for W25X40CLSNIG?

A: W25X40CLSNIG is supplied in Tube packaging, whereas AT25DF041B-SSHNHR-T is supplied in Tape & Reel format. Both formats are suitable for production assembly.

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