LE25U81AMCTWG Equivalent & Substitute Parts

Part Overview

The LE25U81AMCTWG is a FLASH Memory IC with 8Mbit capacity, SPI interface, and 40 MHz clock frequency manufactured by onsemi. This device is classified as Obsolete, which necessitates identification of equivalent substitute components for ongoing design support and procurement continuity. The part is housed in an 8-SOIC package and operates across the industrial temperature range of -40°C to 85°C.

Substiute Parts

LE25U81AMCTWG

onsemiIn Stock: 1035LE25U81AMCTWG Datasheet

Current PartRFQ

LE25U81AFDTWG

onsemiIn Stock: 814LE25U81AFDTWG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LE25U81AMCTWG is determined by strict equivalence across the following critical parameters:

• Memory capacity: 8Mbit
• Memory organization: 1M x 8
• Interface protocol: SPI
• Operating frequency: 40 MHz
• Supply voltage range: 2.3V ~ 2.7V
• Temperature operating range: -40°C ~ 85°C
• Mounting technology: Surface Mount
• Package footprint: 8-SOIC (0.154", 3.90mm Width)
• Compliance certifications: ROHS3, REACH Unaffected

The LE25U81AFDTWG meets all electrical and mechanical substitution criteria. Differences in package designation (8-VSOIC vs. 8-SOIC) do not affect functional compatibility when the physical footprint dimensions remain equivalent at 0.154" width and 3.90mm width specification.

Parameter Comparison

Engineering Selection Recommendations

The LE25U81AFDTWG is the qualified substitute for the LE25U81AMCTWG. Both components are manufactured by onsemi and maintain identical electrical specifications, memory capacity, interface protocol, and operating parameters. The primary distinction is product lifecycle status: the LE25U81AMCTWG is Obsolete while the LE25U81AFDTWG is Active, ensuring continued availability and manufacturing support.

Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for industrial and commercial applications. The MSL rating of 3 (168 Hours) applies uniformly across both variants, requiring equivalent moisture control during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the LE25U81AFDTWG directly replace the LE25U81AMCTWG in existing designs?

A: Yes. Both parts share identical electrical specifications, memory capacity (8Mbit), interface (SPI), clock frequency (40 MHz), supply voltage range (2.3V ~ 2.7V), and operating temperature range (-40°C ~ 85°C). The physical package dimensions are equivalent at 8-SOIC 0.154" width and 3.90mm width.

Q: What is the difference between 8-SOIC and 8-VSOIC package designations?

A: Both designations reference the same physical footprint dimensions (0.154", 3.90mm Width) for this product. The package type difference does not affect PCB layout compatibility or functional performance.

Q: Why is the LE25U81AMCTWG classified as Obsolete?

A: Obsolete status indicates the part has reached end-of-life in the manufacturer's product portfolio. The LE25U81AFDTWG, classified as Active, represents the current production equivalent and is recommended for new designs and procurement.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the LE25U81AMCTWG and LE25U81AFDTWG maintain identical ROHS3 compliance and REACH Unaffected status. MSL ratings are equivalent at 3 (168 Hours).

Q: What inventory status should be considered for procurement?

A: The LE25U81AMCTWG has 1011 Pcs available as New Original In Stock. The LE25U81AFDTWG has 760 Pcs available as New Original In Stock. For long-term supply chain planning, the Active status of the LE25U81AFDTWG provides greater assurance of continued availability.