Equivalent & Substitute Parts for 24AA02UID-I/SN

Part Overview

The 24AA02UID-I/SN is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 900 ns access time. This non-volatile memory device is housed in an 8-SOIC surface mount package and operates across a supply voltage range of 1.7V to 5.5V with an operating temperature range of -40°C to 85°C. The part is ROHS3 compliant and carries an active product status. Equivalent and substitute parts are identified based on matching electrical specifications, memory organization, interface protocol, and physical packaging requirements.

Key Parameters

Parameter	Value
Memory Type	Non-Volatile EEPROM
Memory Size	2Kbit
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5 ms
Voltage Supply Range	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 24AA02UID-I/SN are qualified based on the following critical parameters:

Memory Size: 2Kbit (all substitutes maintain this capacity)
Memory Interface: I2C protocol at 400 kHz operation
Access Time: 900 ns (consistent across all variants)
Write Cycle Time: 5 ms (page/word write)
Supply Voltage: 1.7V ~ 5.5V (full range compatibility)
Operating Temperature: -40°C ~ 85°C
Package: 8-SOIC surface mount form factor
Compliance: ROHS3 compliant, REACH unaffected

Substitution is determined by electrical parameter equivalence and physical package compatibility. Memory organization variants (128 x 8 x 2 versus 256 x 8) do not affect functional substitutability for I2C EEPROM applications, as both configurations deliver the same 2Kbit total capacity and interface behavior.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Memory Organization	Interface	Clock Frequency	Access Time	Write Cycle Time	Supply Voltage	Operating Temperature	Package	Inventory (Pcs)	Product Status
24AA02UID-I/SN	Microchip Technology	2Kbit	128 x 8 x 2	I2C	400 kHz	900 ns	5 ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	5534	Active
24AA02-I/SN	Microchip Technology	2Kbit	256 x 8	I2C	400 kHz	900 ns	5 ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	36647	Active
24AA024-I/SN	Microchip Technology	2Kbit	256 x 8	I2C	400 kHz	900 ns	5 ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	1322	Active
24AA025E48-I/SN	Microchip Technology	2Kbit	256 x 8	I2C	400 kHz	900 ns	5 ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	18255	Active
24AA025E64-I/SN	Microchip Technology	2Kbit	256 x 8	I2C	400 kHz	900 ns	5 ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	6793	Active
24AA025UID-I/SN	Microchip Technology	2Kbit	128 x 8 x 2	I2C	400 kHz	900 ns	5 ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	1401	Active
24AA02E48-I/SN	Microchip Technology	2Kbit	256 x 8	I2C	400 kHz	900 ns	5 ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	5834	Active
24AA02E64-I/SN	Microchip Technology	2Kbit	256 x 8	I2C	400 kHz	900 ns	5 ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	1750	Active
24AA02H-I/SN	Microchip Technology	2Kbit	256 x 8	I2C	400 kHz	900 ns	5 ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	1535	Active

Engineering Selection Recommendations

All listed substitute parts maintain active product status with Microchip Technology and carry ROHS3 compliance certification. Selection among equivalent parts should be based on:

Inventory availability and lead time requirements
Memory organization preference (128 x 8 x 2 versus 256 x 8 configurations)
Specific device variant requirements indicated by suffix designations (E48, E64, H, UID)

The 24AA02-I/SN variant offers the highest inventory availability (36,647 units) with verified DiGi-Electronics programmability status. The 24AA025E48-I/SN and 24AA02E48-I/SN variants provide substantial inventory (18,255 and 5,834 units respectively) for applications requiring E48 configuration specifications.

All parts are electrically and mechanically interchangeable within the specified parameter constraints and maintain identical thermal, voltage, and timing characteristics.

Frequently Asked Questions (FAQ)

Q: Can I substitute 24AA02-I/SN for 24AA02UID-I/SN in my application?

A: Yes. Both parts are electrically equivalent with identical memory size (2Kbit), I2C interface (400 kHz), access time (900 ns), supply voltage range (1.7V ~ 5.5V), and operating temperature range (-40°C ~ 85°C). The primary difference is memory organization (256 x 8 versus 128 x 8 x 2), which does not affect functional compatibility for I2C EEPROM applications. Both are housed in 8-SOIC packages and are ROHS3 compliant.

Q: What is the difference between memory organization variants?

A: Memory organization describes the internal address structure. The 128 x 8 x 2 configuration (24AA02UID-I/SN, 24AA025UID-I/SN) and 256 x 8 configuration (24AA02-I/SN, 24AA024-I/SN, and others) both deliver 2Kbit total capacity. The addressing scheme differs internally, but I2C protocol operation and data access remain functionally identical for system-level applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification and are REACH unaffected, meeting current environmental and regulatory requirements.

Q: What packaging format is used for all these parts?

A: All parts use 8-SOIC surface mount packaging with 0.154" (3.90mm) width. Physical footprint and pin configuration are identical across all variants, enabling direct PCB-level substitution.

Q: Which variant has the best inventory availability?

A: The 24AA02-I/SN variant maintains the highest inventory level at 36,647 units in stock, followed by 24AA025E48-I/SN with 18,255 units.

Q: Do all parts operate at the same I2C clock frequency?

A: Yes. All substitute parts operate at 400 kHz I2C clock frequency with 900 ns access time and 5 ms write cycle time, ensuring timing compatibility across all variants.

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