AT25DF021-MHF-Y Equivalent & Substitute Parts Reference

Part Overview

The AT25DF021-MHF-Y is an obsolete memory integrated circuit by Microchip Technology, categorized as a FLASH Memory IC with a capacity of 2Mbit and an SPI interface. It is housed in an 8-UDFN (5x6) package and operates at a maximum clock frequency of 50 MHz. As the part status is obsolete and no longer in active production, it is necessary to identify suitable alternative models to ensure continuity in manufacturing and maintenance of legacy systems.

Substiute Parts

AT25DF021-MHF-Y

Microchip TechnologyIn Stock: 758AT25DF021-MHF-Y Datasheet

Current PartRFQ

SST25LF020A-33-4I-QAE

Microchip TechnologyIn Stock: 2267SST25LF020A-33-4I-QAE Datasheet

MFR RecommendedRFQ

W25X20CLZPIG

Winbond ElectronicsIn Stock: 29928W25X20CLZPIG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute part selection is strictly based on the following key parameters: memory type (Non-Volatile), memory format (FLASH), technology (FLASH), memory size (2Mbit), memory organization (256K x 8), memory interface (SPI), clock frequency, voltage supply range, operating temperature range, mounting type (Surface Mount), package/case, RoHS and REACH status, and MSL classification. The substitute parts listed match these criteria as provided and are considered for direct replacement according to the supplied data.

Parameter Comparison

Engineering Selection Recommendations

The AT25DF021-MHF-Y is classified as obsolete. Substitute parts SST25LF020A-33-4I-QAE and W25X20CLZPIG are both listed as active and compliant with RoHS3 and REACH regulations. Both substitutes maintain the same memory technology, format, organization, and interface as the main part. Moisture Sensitivity Level and ECCN are consistent across all options.

Frequently Asked Questions (FAQ)

Q: What are the key criteria for selecting substitute memory ICs in this category?
A: Substitute selection is based on matching memory type (Non-Volatile FLASH), memory size (2Mbit), memory interface (SPI), voltage supply range, operating temperature, mounting type, and compliance status.

Q: Are package and footprint considerations important for substituting the AT25DF021-MHF-Y?
A: Only parts with surface-mount packages and similar or compatible case outlines have been included. Differences exist between 8-UDFN and 8-WDFN/8-WSON; these factors may affect PCB layout compatibility.

Q: What compliance certifications are maintained across all substitute options?
A: All listed parts are ROHS3 Compliant, have Moisture Sensitivity Level 3 (168 Hours), are REACH Unaffected, and possess ECCN EAR99.

Q: Are there specification differences affecting substitutability within the provided list?
A: While all listed substitutes share the main functional and interface parameters, there are variations in clock frequency, write cycle time, voltage range, and package type, which are strictly as stated in the supplied data.