AT17F040A-30JC Equivalent & Substitute Parts

Part Overview

The AT17F040A-30JC is a 4Mb FLASH memory integrated circuit manufactured by Microchip Technology, housed in a 20-pin LCC (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, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs requiring this memory capacity and interface specification.

Substiute Parts

AT17F040A-30JC

Microchip TechnologyIn Stock: 791AT17F040A-30JC Datasheet

Current PartRFQ

AT17F040A-30JU

Microchip TechnologyIn Stock: 1238AT17F040A-30JU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT17F040A-30JC is determined by strict equivalence across the following critical parameters:

• Memory type (FLASH)
• Memory capacity (4Mb)
• Supply voltage range (2.97V ~ 3.63V)
• Package configuration (20-LCC J-Lead, 20-PLCC 9x9)
• Mounting technology (Surface Mount)
• Pin count and pinout compatibility (20 pins)

The AT17F040A-30JU meets all these criteria and is therefore a direct functional equivalent. Differences in operating temperature range, product status, and compliance certifications do not affect electrical or mechanical interchangeability at the component level.

Parameter Comparison

Engineering Selection Recommendations

The AT17F040A-30JU is the direct substitute for the AT17F040A-30JC. Both parts share identical electrical specifications, memory capacity, voltage requirements, and physical packaging. The AT17F040A-30JU is currently in active production status, whereas the AT17F040A-30JC is obsolete.

For new designs and ongoing system support, the AT17F040A-30JU is the appropriate selection. This part offers ROHS3 compliance, addressing regulatory requirements that the original part does not meet. The extended operating temperature range (-40°C to 85°C) of the AT17F040A-30JU provides additional thermal margin compared to the original specification (0°C to 70°C), making it suitable for a broader range of application environments.

Frequently Asked Questions (FAQ)

Q: Are AT17F040A-30JC and AT17F040A-30JU pin-for-pin compatible?

A: Yes. Both parts use the 20-pin LCC (J-Lead) package with identical pinout and electrical interface specifications. No circuit modifications are required for substitution.

Q: What is the difference between the -30JC and -30JU suffix designations?

A: The suffix indicates packaging format. The -30JC variant uses standard packaging, while the -30JU uses tube packaging. The electrical and functional specifications remain identical.

Q: Can the AT17F040A-30JU be used in applications originally designed for the AT17F040A-30JC?

A: Yes. The AT17F040A-30JU meets or exceeds all electrical and mechanical requirements of the original part. The extended operating temperature range and improved compliance status make it suitable for direct substitution.

Q: What is the significance of the RoHS compliance difference?

A: The AT17F040A-30JU is ROHS3 compliant, meaning it meets current environmental and hazardous substance restrictions. The AT17F040A-30JC is non-compliant with these standards. For applications subject to RoHS regulations, the AT17F040A-30JU is the required choice.

Q: Are there any thermal considerations when substituting these parts?

A: The AT17F040A-30JU operates across a wider temperature range (-40°C to 85°C) compared to the AT17F040A-30JC (0°C to 70°C). This provides additional operational margin in temperature-sensitive applications. No thermal design changes are necessary.