Alternatives to Microchip Technology AT25040AN-10SU-1.8
Microchip Technology AT25040AN-10SU-1.8 and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 AT25040AN-10SU-1.8Microchip Technology | AT25040B-SSHL-TMicrochip Technology |  CAT25040VI-GT3onsemi | +2more | |
|---|---|---|---|---|
| FFF Compatibility | The pin assignment and JEDEC narrow SOIC-8 footprint are identical to the original device.Uses the same 8-lead JEDEC SOIC package with 0.150 inch (3.90mm) body width.Matches or exceeds all electrical parameters including memory density (4Kbit), 20 MHz clock speed, and 1.8V to 5.5V supply voltage. | Pin assignment matches the original AT25040AN pin-for-pin.Housed in a standard 8-lead SOIC narrow package (3.90mm width).Functions as a 4Kbit SPI EEPROM operating across the same voltage range (1.8V to 5.5V). | ||
 AI Summary | AT25040AN-10SU-1.8 by Microchip Technology: EEPROM Memory IC 4Kbit SPI 20 MHz 8-SOIC. | This is the official next-generation direct replacement from Microchip for the obsolete AT25040AN series. It retains complete footprint, pinout, and electrical compatibility while offering an active lifecycle status.
| The CAT25040VI-GT3 from onsemi is an active, industry-standard alternative that matches the original's footprint and pinout. It provides seamless functional equivalence for 1.8V to 5.5V SPI EEPROM applications.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Non-stock | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | EEPROM Memory IC 4Kbit SPI 20 MHz 8-SOIC | EEPROM Memory IC 4Kbit SPI 20 MHz 8-SOIC | EEPROM Memory IC 4Kbit SPI 8-SOIC | |
| Manufacturer | Microchip Technology | Microchip Technology | onsemi | |
| Type | Memory | Memory | Memory | |
| Datasheet | Open | Open | Open | |
| Lead Time | 8 weeks | 10 weeks | 36 weeks | |
| Country of Origin | - | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.32.0051 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Technology | EEPROM | - | - | |
| Memory Size | 4Kbit | - | - | |
| Memory Type | Non-Volatile | - | - | |
| Memory Format | EEPROM | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | - | - | |
| Clock Frequency | 20 MHz | - | - | |
| Memory Interface | SPI | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 AT25010AN-10SU-2.7Microchip Technology | Non-stock | Obsolete | 4Alternatives availableSee Alternatives |
| AT25010N-10SI-2.7Microchip Technology | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
| AT24C32AN-10SU-2.7Microchip Technology | Non-stock | Obsolete | 3Alternatives availableSee Alternatives |
| AT24C02N-10SU-2.7Microchip Technology | Non-stock | Obsolete | 6Alternatives availableSee Alternatives |
| AT24C02N-10SC-2.5Microchip Technology | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
 AT29C010A-12JIMicrochip Technology | Discontinued | Obsolete | 3Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Microchip Technology AT25040AN-10SU-1.8 is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the Microchip Technology AT25040AN-10SU-1.8 are the AT25040B-SSHL-T (Microchip Technology) and the CAT25040VI-GT3 (onsemi), out of 4 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the AT25040AN-10SU-1.8 are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The AT25040AN-10SU-1.8 (Microchip Technology) is a part in the Memory category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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