Equivalent & Substitute Parts for 24AA02T-I/MC

Part Overview

The 24AA02T-I/MC 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 designed for applications requiring small-capacity data storage with low-voltage operation (1.7V to 5.5V) and is supplied in 8-DFN surface mount packaging. The part is currently in active production status with verified programmability through DiGi-Electronics. Equivalent and substitute parts are identified for applications where packaging format changes, compliance requirements, or inventory availability necessitate alternative component selection.

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	5 ms
Voltage Supply Range	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-DFN (2x3)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the 24AA02T-I/MC is determined by the following critical parameters: memory size (2Kbit), memory organization (256 x 8), I2C interface protocol, and operating temperature range (-40°C to 85°C). Parts meeting these core requirements are classified as functional equivalents. Secondary parameters including clock frequency, access time, voltage supply range, and package format determine the degree of compatibility and application suitability.

The identified substitute parts maintain identical memory capacity, organization, and interface specifications. Variations in clock frequency (400 kHz to 1 MHz), access time (500 ns to 900 ns), and voltage supply minimums (1.7V to 1.8V) represent performance enhancements or minor operational differences that do not prevent functional substitution in standard applications. Packaging format differences (Cut Tape versus Tape & Reel) and compliance certifications (RoHS status) reflect supply chain and regulatory considerations rather than functional incompatibility.

Parameter Comparison

Parameter	24AA02T-I/MC (Main)	24AA025T-I/MC	M24C02-RMC6TG	S-24C02DI-A8T1U5
Manufacturer	Microchip Technology	Microchip Technology	STMicroelectronics	ABLIC Inc.
Memory Size	2Kbit	2Kbit	2Kbit	2Kbit
Memory Organization	256 x 8	256 x 8	256 x 8	256 x 8
Memory Interface	I2C	I2C	I2C	I2C
Clock Frequency	400 kHz	400 kHz	400 kHz	1 MHz
Access Time	900 ns	900 ns	900 ns	500 ns
Write Cycle Time	5 ms	5 ms	5 ms	5 ms
Voltage Supply Range	1.7V ~ 5.5V	1.7V ~ 5.5V	1.8V ~ 5.5V	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	8-DFN (2x3)	8-DFN (2x3)	8-UFDFPN (2x3)	8-DFN (2x3)
Packaging Format	Cut Tape (CT) & Digi-Reel	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel	Tape & Reel (TR)
RoHS Status	RoHS Non-Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)
DiGi-Electronics Programmable	Verified	Verified	Not Verified	Not Verified
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

24AA025T-I/MC (Microchip Technology): This part is a parametric equivalent with identical electrical specifications and package type to the main part. The primary distinction is packaging format (Tape & Reel versus Cut Tape) and RoHS3 compliance certification. Moisture sensitivity level is elevated to MSL 3, requiring controlled storage conditions (168-hour limit at specified humidity). Selection is appropriate for applications requiring RoHS3 compliance or when Tape & Reel packaging format is preferred for automated assembly processes.

M24C02-RMC6TG (STMicroelectronics): This part maintains core memory specifications and I2C interface compatibility. The package designation differs slightly (8-UFDFPN versus 8-VFDFN), though both are 8-pin DFN packages with 2x3 mm dimensions. Voltage supply minimum is 1.8V (versus 1.7V for the main part), which may restrict operation in ultra-low-voltage applications. RoHS3 compliance and MSL 1 rating are provided. DiGi-Electronics programmability is not verified for this part. Selection is appropriate when STMicroelectronics supply chain preference or RoHS3 compliance is required.

S-24C02DI-A8T1U5 (ABLIC Inc.): This part offers enhanced performance with 1 MHz clock frequency and 500 ns access time, representing faster operation than the main part. Electrical specifications and temperature range remain compatible. Tape & Reel packaging format and RoHS3 compliance are provided. DiGi-Electronics programmability is not verified. Selection is appropriate for applications requiring higher I2C clock speeds or faster access times, provided the 1.7V to 5.5V voltage range is maintained.

Frequently Asked Questions (FAQ)

Q: Can 24AA025T-I/MC be used as a direct replacement for 24AA02T-I/MC?

A: Yes, 24AA025T-I/MC is a parametric equivalent with identical memory capacity, organization, interface, and electrical specifications. The primary differences are packaging format (Tape & Reel) and RoHS3 compliance. Moisture sensitivity level (MSL 3) requires controlled storage conditions. No circuit modifications are required.

Q: What is the significance of the different package designations (8-VFDFN versus 8-UFDFPN)?

A: Both designations refer to 8-pin DFN packages with 2x3 mm dimensions and exposed pad construction. The letter prefix indicates manufacturer-specific package naming conventions. Physical footprint and pin configuration are compatible for PCB layout purposes. Consult manufacturer datasheets for precise dimensional specifications if critical spacing is required.

Q: Is the S-24C02DI-A8T1U5 compatible with circuits designed for 400 kHz I2C operation?

A: Yes. The S-24C02DI-A8T1U5 operates at 1 MHz clock frequency, which is backward compatible with 400 kHz I2C bus specifications. The device will operate correctly on a 400 kHz bus. The faster access time (500 ns versus 900 ns) provides performance margin without requiring circuit modifications.

Q: What does MSL 3 (168 Hours) mean for the 24AA025T-I/MC?

A: Moisture Sensitivity Level 3 indicates the component must be stored in controlled humidity conditions and used within 168 hours of exposure to ambient humidity after packaging is opened. This requires proper handling procedures and may impact supply chain logistics. MSL 1 parts (24AA02T-I/MC, M24C02-RMC6TG, S-24C02DI-A8T1U5) have unlimited shelf life and are less sensitive to moisture exposure.

Q: Are all substitute parts RoHS3 compliant?

A: The main part (24AA02T-I/MC) is RoHS non-compliant. All three substitute parts (24AA025T-I/MC, M24C02-RMC6TG, S-24C02DI-A8T1U5) are RoHS3 compliant. Selection of RoHS3 compliant parts may be required for applications subject to RoHS regulations or customer specifications.

Q: What is the minimum voltage supply difference between parts?

A: The main part and most substitutes operate from 1.7V minimum. The M24C02-RMC6TG requires 1.8V minimum, which may limit operation in ultra-low-voltage applications below 1.8V. Verify system voltage specifications before selection.

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