Equivalent & Substitute Parts for 24AA024T-I/MC

Part Overview

The 24AA024T-I/MC is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface with 400 kHz clock frequency and 900 ns access time. This non-volatile memory device is packaged in 8-DFN (2x3) surface mount configuration and operates across a supply voltage range of 1.7V to 5.5V with temperature range of -40°C to 85°C. The part is currently active in production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are necessary to address supply chain availability, packaging preferences, performance requirements, or compliance specifications that may vary across different design phases or manufacturing locations.

Key Parameters

Parameter	Value
Memory Size	2Kbit
Memory Organization	256 x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5ms
Voltage Supply Range	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package Type	8-DFN Exposed Pad
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 24AA024T-I/MC is determined by strict equivalence across the following critical parameters: 2Kbit memory capacity, 256 x 8 memory organization, I2C interface protocol, and surface mount technology. All substitute parts must maintain compatibility with the specified electrical operating conditions: 1.7V to 5.5V supply voltage range and -40°C to 85°C operating temperature. Clock frequency, access time, and write cycle time are secondary parameters that define performance characteristics; parts with equal or superior performance specifications are functionally compatible. Package variations (8-DFN, 8-UFDFN, 8-TDFN, 8-VFDFN, VSON008X2030, 8-MLP, 8-UFDFPN) are acceptable provided the exposed pad configuration and surface mount footprint remain compatible with PCB design requirements. RoHS compliance status and MSL ratings are manufacturing and supply chain considerations that do not affect functional substitution but may impact procurement and assembly processes.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Interface	Clock Freq	Access Time	Write Cycle	Voltage Range	Temp Range	Package	RoHS Status	MSL
24AA024T-I/MC	Microchip	2Kbit	I2C	400 kHz	900 ns	5ms	1.7V~5.5V	-40°C~85°C	8-DFN	ROHS3	1
24AA025T-I/MC	Microchip	2Kbit	I2C	400 kHz	900 ns	5ms	1.7V~5.5V	-40°C~85°C	8-DFN	ROHS3	3
24AA02T-I/MC	Microchip	2Kbit	I2C	400 kHz	900 ns	5ms	1.7V~5.5V	-40°C~85°C	8-DFN	Non-compliant	1
BR24L02NUX-WTR	Rohm Semiconductor	2Kbit	I2C	400 kHz	N/A	5ms	1.8V~5.5V	-40°C~85°C	8-UFDFN	ROHS3	1
CAT34C02HU4IGT4A	onsemi	2Kbit	I2C	400 kHz	900 ns	5ms	1.7V~5.5V	-40°C~85°C	8-UFDFN	ROHS3	1
CAT34C02VP2IGT4A	onsemi	2Kbit	I2C	400 kHz	900 ns	5ms	1.7V~5.5V	-40°C~85°C	8-TDFN	ROHS3	1
M24C02-DRMF3TG/K	STMicroelectronics	2Kbit	I2C	1 MHz	450 ns	4ms	1.8V~5.5V	-40°C~125°C	8-MLP	ROHS3	1
M24C02-FMC6TG	STMicroelectronics	2Kbit	I2C	400 kHz	900 ns	5ms	1.7V~5.5V	-40°C~85°C	8-UFDFN	ROHS3	1
M24C02-RMC6TG	STMicroelectronics	2Kbit	I2C	400 kHz	900 ns	5ms	1.8V~5.5V	-40°C~85°C	8-UFDFN	ROHS3	1
M34E02-FMC6TG	STMicroelectronics	2Kbit	I2C	400 kHz	900 ns	5ms	1.7V~5.5V	-40°C~85°C	8-UFDFN	ROHS3	1
S-24C02DI-A8T1U5	ABLIC Inc.	2Kbit	I2C	1 MHz	500 ns	5ms	1.7V~5.5V	-40°C~85°C	8-DFN	ROHS3	1

Engineering Selection Recommendations

All listed substitute parts maintain functional equivalence to the 24AA024T-I/MC across core memory specifications: 2Kbit capacity, I2C interface, and surface mount technology. Selection among substitutes should prioritize the following criteria:

Microchip Technology parts (24AA025T-I/MC, 24AA02T-I/MC) offer direct manufacturer compatibility and identical electrical performance. The 24AA025T-I/MC carries ROHS3 compliance with MSL 3 rating, suitable for standard assembly processes. The 24AA02T-I/MC maintains MSL 1 rating but carries RoHS non-compliance status, limiting use to legacy or non-regulated applications.

onsemi CAT34C02 series (CAT34C02HU4IGT4A, CAT34C02VP2IGT4A) provides ROHS3 compliant alternatives with identical electrical specifications and MSL 1 rating. Package variations (8-UFDFN, 8-TDFN) accommodate different PCB layout requirements while maintaining functional compatibility.

STMicroelectronics M24C02 series (M24C02-FMC6TG, M24C02-RMC6TG, M24C02-DRMF3TG/K) and M34E02-FMC6TG deliver ROHS3 compliance with enhanced performance characteristics. The M24C02-DRMF3TG/K variant includes automotive qualification (AEC-Q100) and extended temperature range (-40°C to 125°C), suitable for automotive and industrial applications. M24C02-DRMF3TG/K operates at 1 MHz clock frequency with 450 ns access time, exceeding baseline performance specifications.

Rohm Semiconductor BR24L02NUX-WTR provides ROHS3 compliant alternative with VSON008X2030 package, offering compact form factor with identical electrical performance at 400 kHz operation.

ABLIC Inc. S-24C02DI-A8T1U5 delivers ROHS3 compliance with enhanced 1 MHz clock frequency and 500 ns access time, maintaining 8-DFN package compatibility with the primary part.

All substitute parts carry active production status and ROHS3 compliance except 24AA02T-I/MC. Voltage supply range compatibility requires verification: parts specifying 1.8V minimum (BR24L02NUX-WTR, M24C02-RMC6TG, M24C02-DRMF3TG/K) are suitable only for designs with 1.8V or higher supply voltage.

Frequently Asked Questions (FAQ)

Q: Can I substitute 24AA024T-I/MC with any of the listed parts without PCB redesign?

A: Direct substitution depends on package compatibility. The 24AA024T-I/MC uses 8-DFN package. Microchip 24AA025T-I/MC and 24AA02T-I/MC maintain identical 8-DFN footprint for direct pin-compatible replacement. onsemi CAT34C02 series, STMicroelectronics M24C02/M34E02 series, and Rohm BR24L02NUX-WTR use alternative DFN variants (8-UFDFN, 8-TDFN, VSON008X2030) requiring PCB layout verification. ABLIC S-24C02DI-A8T1U5 maintains 8-DFN compatibility.

Q: What is the difference between the Microchip variants (24AA024T-I/MC, 24AA025T-I/MC, 24AA02T-I/MC)?

A: All three Microchip parts share identical electrical specifications: 2Kbit capacity, 400 kHz I2C operation, 900 ns access time, and 1.7V to 5.5V supply range. The 24AA025T-I/MC differs in MSL rating (3 vs. 1) and carries ROHS3 compliance. The 24AA02T-I/MC maintains MSL 1 but is RoHS non-compliant. Base product numbers differ (24AA024, 24AA025, 24AA02), indicating internal design variations that do not affect functional compatibility.

Q: Are the STMicroelectronics M24C02-DRMF3TG/K and M24C02-FMC6TG interchangeable?

A: Both parts are functionally compatible as 2Kbit I2C EEPROM devices with ROHS3 compliance and MSL 1 rating. The M24C02-DRMF3TG/K operates at 1 MHz with 450 ns access time and includes automotive qualification (AEC-Q100) with extended temperature range to 125°C. The M24C02-FMC6TG operates at 400 kHz with 900 ns access time and standard -40°C to 85°C range. Selection depends on performance requirements and application grade (automotive vs. general industrial).

Q: What voltage supply considerations apply when selecting substitutes?

A: The primary 24AA024T-I/MC specifies 1.7V to 5.5V supply range. Most substitutes maintain this range. However, BR24L02NUX-WTR, M24C02-RMC6TG, and M24C02-DRMF3TG/K specify minimum 1.8V supply voltage. These parts are incompatible with designs requiring operation below 1.8V. Verify supply voltage specifications against circuit requirements before selection.

Q: Does package type affect electrical performance or I2C protocol compatibility?

A: Package type does not affect electrical performance or I2C protocol operation. All listed substitutes implement identical I2C interface protocol at 400 kHz or 1 MHz operation. Package variations (8-DFN, 8-UFDFN, 8-TDFN, VSON008X2030, 8-MLP, 8-UFDFPN) represent physical form factor differences only. Package selection is determined by PCB layout constraints, thermal management requirements, and manufacturing assembly capabilities. Electrical functionality remains equivalent across all package variants.

Q: Which substitute offers the best performance improvement over 24AA024T-I/MC?

A: The STMicroelectronics M24C02-DRMF3TG/K provides the most significant performance enhancement with 1 MHz clock frequency (2.5x faster than 400 kHz baseline), 450 ns access time (50% faster than 900 ns baseline), and 4ms write cycle time (20% faster than 5ms baseline). This part also includes automotive qualification and extended temperature range to 125°C. The ABLIC S-24C02DI-A8T1U5 offers moderate performance improvement with 1 MHz operation and 500 ns access time while maintaining 8-DFN package compatibility.

Q: Are all listed substitutes suitable for high-volume production?

A: All listed substitutes carry active production status with substantial inventory availability. Microchip 24AA025T-I/MC (10,478 pcs), 24AA02T-I/MC (18,908 pcs), onsemi CAT34C02VP2IGT4A (34,490 pcs), STMicroelectronics M34E02-FMC6TG (27,294 pcs), and ABLIC S-24C02DI-A8T1U5 (10,583 pcs) demonstrate strong supply chain presence. Rohm BR24L02NUX-WTR (184,920 pcs) offers exceptional availability. All parts are suitable for high-volume production with established manufacturing processes and supply chain stability.

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