AT17F040-30JC Equivalent & Substitute Parts

Part Overview

The AT17F040-30JC is a 4Mb FLASH memory integrated circuit manufactured by Microchip Technology, housed in a 20-pin PLCC (J-Lead) surface mount package. This device operates within a supply voltage range of 2.97V to 3.63V and is designed for configuration memory applications. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure long-term component availability for production and maintenance applications.

Substiute Parts

AT17F040-30JC

Microchip TechnologyIn Stock: 1180AT17F040-30JC Datasheet

Current PartRFQ

AT17F040-30JU

Microchip TechnologyIn Stock: 2292AT17F040-30JU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT17F040-30JC is determined by strict equivalence across the following critical parameters:

• Memory capacity: 4Mb FLASH
• Package configuration: 20-PLCC (9x9) with 20-LCC (J-Lead) case
• Supply voltage compatibility: 2.97V ~ 3.63V operating range
• Mounting technology: Surface mount
• Base product family: AT17F040 series

The AT17F040-30JU qualifies as a direct substitute based on identical memory size, package type, mounting method, and voltage specification. Differences in operating temperature range and product status do not affect functional substitutability within the specified electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

The AT17F040-30JU is the direct functional equivalent for AT17F040-30JC applications. Selection of the AT17F040-30JU is supported by:

• Identical electrical specifications across memory capacity, supply voltage, and package configuration
• Active product status ensuring ongoing availability and supply chain continuity
• ROHS3 compliance, providing regulatory alignment for new designs and manufacturing processes
• Extended operating temperature range (-40°C ~ 85°C) that encompasses the original part's specification (0°C ~ 70°C), enabling operation across broader environmental conditions

For applications constrained to the original operating temperature range of 0°C ~ 70°C, the AT17F040-30JU remains fully compatible and suitable for direct replacement.

Frequently Asked Questions (FAQ)

Q: Can AT17F040-30JU directly replace AT17F040-30JC in existing designs?

A: Yes. Both parts share identical memory capacity (4Mb), supply voltage range (2.97V ~ 3.63V), and package configuration (20-PLCC). The AT17F040-30JU operates across a wider temperature range, making it functionally compatible for all applications within the original part's 0°C ~ 70°C specification.

Q: What is the primary difference between these two parts?

A: The AT17F040-30JC is obsolete, while the AT17F040-30JU is active. The substitute part also features ROHS3 compliance and an extended operating temperature range of -40°C ~ 85°C compared to the original 0°C ~ 70°C.

Q: Are the packages physically identical?

A: Yes. Both parts use the 20-PLCC (9x9) supplier package with 20-LCC (J-Lead) case configuration, ensuring identical PCB footprint and mounting compatibility.

Q: Does the extended temperature range of AT17F040-30JU affect compatibility?

A: No. The extended range is a superset of the original specification. Applications operating within 0°C ~ 70°C will function identically with either part.

Q: Is RoHS compliance a functional requirement for substitution?

A: RoHS compliance is a regulatory and manufacturing consideration. The AT17F040-30JU's ROHS3 compliance aligns with current environmental standards, while the original part is non-compliant. For new designs and manufacturing processes, the compliant substitute is preferred.