AT25DF256-MAHNGU-T Equivalent & Substitute Parts

Part Overview

The AT25DF256-MAHNGU-T is a 256Kbit FLASH memory IC with SPI interface manufactured by Renesas Electronics Corporation. This non-volatile memory device operates at 104 MHz and is housed in an 8-UDFN (2x3) surface mount package with exposed pad. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when electrical specifications, memory organization, interface protocol, and package form factor remain identical across different packaging configurations or manufacturer designations. The primary reason for identifying substitutes is to ensure design flexibility and supply chain continuity while maintaining full functional and electrical compatibility.

Key Parameters

Parameter	Value
Memory Size	256Kbit
Memory Organization	32K x 8
Memory Interface	SPI
Clock Frequency	104 MHz
Write Cycle Time - Word	8µs
Write Cycle Time - Page	2.5ms
Voltage Supply Range	1.65V ~ 3.6V
Operating Temperature Range	-40°C ~ 85°C (TC)
Package / Case	8-UDFN Exposed Pad
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the AT25DF256-MAHNGU-T is determined by strict equivalence across the following critical parameters:

Memory capacity: 256Kbit
Memory organization: 32K x 8 bit structure
Interface protocol: SPI serial communication
Operating frequency: 104 MHz maximum
Supply voltage range: 1.65V to 3.6V
Temperature operating range: -40°C to 85°C
Physical package: 8-UDFN with exposed pad
Surface mount configuration

The AT25DF256-MAHN-T qualifies as a direct substitute because it maintains identical electrical specifications, memory architecture, interface characteristics, and physical package dimensions. The difference between these part numbers reflects packaging format variation (tube versus tape & reel) rather than functional or electrical divergence.

Parameter Comparison

Parameter	AT25DF256-MAHNGU-T	AT25DF256-MAHN-T
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Memory Size	256Kbit	256Kbit
Memory Organization	32K x 8	32K x 8
Memory Interface	SPI	SPI
Clock Frequency	104 MHz	104 MHz
Write Cycle Time - Word	8µs	8µs
Write Cycle Time - Page	2.5ms	2.5ms
Voltage Supply	1.65V ~ 3.6V	1.65V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TC)	-40°C ~ 85°C (TC)
Package / Case	8-UDFN Exposed Pad	8-UDFN Exposed Pad
Mounting Type	Surface Mount	Surface Mount
Product Status	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both AT25DF256-MAHNGU-T and AT25DF256-MAHN-T are active production devices from Renesas Electronics Corporation with identical ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on packaging format requirements and supply availability rather than electrical or functional considerations.

The AT25DF256-MAHNGU-T is supplied in tube packaging, while the AT25DF256-MAHN-T is supplied in tape & reel format. Tape & reel packaging is standard for automated assembly processes and high-volume production environments. Tube packaging may be preferred for lower-volume applications or manual assembly workflows.

Both parts carry MSL 1 (unlimited) moisture sensitivity rating, indicating no special moisture control requirements during storage or handling. Both maintain full compliance with current regulatory standards applicable to electronic components.

Frequently Asked Questions (FAQ)

Q: Can AT25DF256-MAHN-T be used as a direct replacement for AT25DF256-MAHNGU-T in existing designs?

A: Yes. Both parts are electrically and functionally identical. They share the same memory capacity (256Kbit), organization (32K x 8), SPI interface, 104 MHz operating frequency, supply voltage range (1.65V to 3.6V), temperature range (-40°C to 85°C), and 8-UDFN package with exposed pad. The difference is packaging format only.

Q: What is the difference between these part numbers?

A: The primary difference is packaging configuration. AT25DF256-MAHNGU-T uses tube packaging, while AT25DF256-MAHN-T uses tape & reel packaging. Both contain identical silicon and meet identical electrical specifications.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical ROHS3 compliance, REACH unaffected status, and MSL 1 moisture sensitivity rating. Both are active production devices from Renesas Electronics Corporation.

Q: Which packaging format should I specify for my application?

A: Tape & reel (AT25DF256-MAHN-T) is standard for automated surface mount assembly and high-volume production. Tube packaging (AT25DF256-MAHNGU-T) may be used for lower-volume applications or manual assembly processes. Verify your assembly equipment and process requirements.

Q: Can I mix these parts in the same production batch?

A: Yes, provided your assembly process can accommodate both packaging formats. The electrical and functional performance will be identical.

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