AT25XE021A-XMHN-B Equivalent & Substitute Parts

Part Overview

The AT25XE021A-XMHN-B is a 2Mbit Serial Peripheral Interface (SPI) FLASH memory IC manufactured by Renesas Electronics Corporation. This non-volatile memory device operates at 70 MHz and is packaged in an 8-TSSOP surface mount configuration. The part is currently in active production status and maintains full RoHS3 compliance. Substitute parts are identified to address packaging format requirements, performance specifications, or inventory availability while maintaining electrical and mechanical compatibility within the defined parameter space.

Substiute Parts

AT25XE021A-XMHN-B

Renesas Electronics CorporationIn Stock: 829AT25XE021A-XMHN-B Datasheet

Current PartRFQ

AT25DF021A-XMHN-T

Renesas Electronics CorporationIn Stock: 1683AT25DF021A-XMHN-T Datasheet

MFR RecommendedRFQ

AT25XE021A-XMHN-T

Renesas Electronics CorporationIn Stock: 4544AT25XE021A-XMHN-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

• Memory Size: 2Mbit (fixed requirement)
• Memory Organization: 256K x 8 (fixed requirement)
• Memory Interface: SPI (fixed requirement)
• Supply Voltage Range: 1.65V ~ 3.6V (fixed requirement)
• Operating Temperature Range: -40°C ~ 85°C (TC) (fixed requirement)
• Package / Case: 8-TSSOP (0.173", 4.40mm Width) (fixed requirement)
• Mounting Type: Surface Mount (fixed requirement)
• RoHS Status: ROHS3 Compliant (fixed requirement)

Variable Parameters Allowing Substitution:

• Clock Frequency: May vary (70 MHz or higher)
• Write Cycle Time - Word: 8µs (fixed)
• Write Cycle Time - Page: May vary (5ms or faster)
• Packaging Format: Tube or Tape & Reel (TR)

Substitute parts must maintain all critical parameters while allowing flexibility in clock frequency and page write cycle time, provided these do not degrade system performance requirements.

Parameter Comparison

Engineering Selection Recommendations

AT25XE021A-XMHN-T: This substitute maintains identical electrical specifications and clock frequency to the main part. The primary difference is packaging format (Tape & Reel versus Tube). Selection of this part is appropriate when tape and reel packaging is required for automated assembly processes or when tube packaging is unavailable.

AT25DF021A-XMHN-T: This substitute provides enhanced performance through increased clock frequency (104 MHz versus 70 MHz) and faster page write cycle time (2.5ms versus 5ms). All other electrical and mechanical parameters remain compatible. This part is suitable for applications requiring higher data throughput or faster write operations, provided the system design accommodates the increased performance specifications. Both substitute parts maintain active production status and full RoHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can AT25XE021A-XMHN-T be used as a direct replacement for AT25XE021A-XMHN-B?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (Tape & Reel versus Tube). Direct substitution is valid for applications where packaging format does not impose constraints.

Q: Is AT25DF021A-XMHN-T compatible with designs specified for AT25XE021A-XMHN-B?

A: Yes, with design consideration. AT25DF021A-XMHN-T maintains all critical electrical parameters (supply voltage, operating temperature, SPI interface, memory size, and organization). The increased clock frequency (104 MHz) and faster page write cycle time (2.5ms) represent performance enhancements that do not degrade compatibility. Systems designed for 70 MHz operation will function correctly with this higher-performance part.

Q: What is the significance of packaging format differences (Tube versus Tape & Reel)?

A: Tube packaging is suitable for manual handling and lower-volume assembly. Tape & Reel packaging is optimized for automated pick-and-place assembly processes and higher production volumes. Electrical and mechanical performance are identical; selection depends on assembly methodology and production requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed maintain ROHS3 compliance and are suitable for applications requiring RoHS certification.

Q: What is the Moisture Sensitivity Level (MSL) significance?

A: All parts carry MSL 1 (Unlimited), indicating no moisture sensitivity constraints. These parts do not require special moisture control during storage or handling.