24C02CT-I/MC EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24C02CT-I/MC is a 2Kbit I2C EEPROM memory IC manufactured by Microchip Technology, supplied in Cut Tape packaging. This non-volatile memory device operates at 400 kHz I2C clock frequency with 900 ns access time and is designed for applications requiring small-capacity serial EEPROM storage. The part is Active status and RoHS3 compliant. Substitute parts are necessary when Cut Tape packaging is unavailable, when alternative voltage supply ranges are required, or when alternative manufacturers' equivalent devices are preferred for supply chain diversification.

Key Parameters

Parameter	Value
Memory Size	2Kbit
Memory Organization	256 x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Voltage Supply Range	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-VFDFN Exposed Pad
Mounting Type	Surface Mount
Write Cycle Time	1ms

Substitute Part Grouping Explanation

Substitution eligibility for the 24C02CT-I/MC is determined by the following core parameters: Memory Size (2Kbit), Memory Organization (256 x 8), Memory Interface (I2C), Clock Frequency (400 kHz), Access Time (900 ns), Operating Temperature Range (-40°C ~ 85°C), Package Type (8-pin DFN with exposed pad), and Mounting Type (Surface Mount). All listed substitute parts maintain these core specifications. Variations in Voltage Supply Range, Write Cycle Time, Packaging format (Cut Tape vs. Tape & Reel), and manufacturer do not affect functional substitutability. The 24C02CT-I/MC operates within a 4.5V ~ 5.5V supply range; substitute parts with wider voltage ranges (1.7V ~ 5.5V or 2.5V ~ 5.5V) are electrically compatible in applications using the 4.5V ~ 5.5V window.

Parameter Comparison

Parameter	24C02CT-I/MC	24AA025T-I/MC	24LC02BT-I/MC	M24C02-FMC6TG	M24C02-RMC6TG	M34E02-FMC6TG
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology	STMicroelectronics	STMicroelectronics	STMicroelectronics
Memory Size	2Kbit	2Kbit	2Kbit	2Kbit	2Kbit	2Kbit
Memory Organization	256 x 8	256 x 8	256 x 8	256 x 8	256 x 8	256 x 8
Memory Interface	I2C	I2C	I2C	I2C	I2C	I2C
Clock Frequency	400 kHz	400 kHz	400 kHz	400 kHz	400 kHz	400 kHz
Access Time	900 ns	900 ns	900 ns	900 ns	900 ns	900 ns
Voltage Supply Range	4.5V ~ 5.5V	1.7V ~ 5.5V	2.5V ~ 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	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-VFDFN Exposed Pad	8-VFDFN Exposed Pad	8-VFDFN Exposed Pad	8-UFDFN Exposed Pad	8-UFDFN Exposed Pad	8-UFDFN Exposed Pad
Write Cycle Time	1ms	5ms	5ms	5ms	5ms	5ms
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and RoHS3 compliance, ensuring long-term availability and environmental regulatory conformance. The 24AA025T-I/MC, 24LC02BT-I/MC, and M24C02-FMC6TG offer the highest inventory levels (10,478, 30,100, and 19,108 units respectively), supporting supply chain continuity. The 24LC02BT-I/MC provides Moisture Sensitivity Level 1 (Unlimited) matching the original part, while 24AA025T-I/MC specifies MSL 3 (168 Hours). All STMicroelectronics alternatives (M24C02-FMC6TG, M24C02-RMC6TG, M34E02-FMC6TG) are not verified for DiGi-Electronics programmability, whereas Microchip Technology parts maintain verified programmability status. Selection should prioritize inventory availability, required voltage supply range compatibility with the application circuit, and programmability verification requirements for manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can the 24AA025T-I/MC replace the 24C02CT-I/MC in all applications? A: The 24AA025T-I/MC is functionally equivalent for I2C EEPROM operations at 400 kHz with 2Kbit capacity and 900 ns access time. The primary differences are packaging format (Tape & Reel vs. Cut Tape), wider voltage supply range (1.7V ~ 5.5V vs. 4.5V ~ 5.5V), extended write cycle time (5ms vs. 1ms), and higher Moisture Sensitivity Level (3 vs. 1). Substitution is valid when the application operates within the 4.5V ~ 5.5V window and write cycle time is not a critical constraint.

Q: What is the difference between the Microchip Technology and STMicroelectronics alternatives? A: Both manufacturers provide 2Kbit I2C EEPROM devices with identical core specifications (400 kHz, 900 ns access time, 256 x 8 organization). Microchip Technology parts (24AA025T-I/MC, 24LC02BT-I/MC) are verified for DiGi-Electronics programmability. STMicroelectronics parts (M24C02-FMC6TG, M24C02-RMC6TG, M34E02-FMC6TG) use 8-UFDFN packaging versus the 8-VFDFN package of Microchip alternatives. Package footprints are physically similar but may require PCB layout verification.

Q: Are the 8-VFDFN and 8-UFDFPN packages interchangeable? A: Both packages are 8-pin DFN with exposed pad in 2x3 mm form factor. Physical dimensions and pin assignments are compatible for PCB placement. However, PCB footprint artwork should be verified against the specific package datasheet to ensure solder pad dimensions and thermal pad specifications match the selected component.

Q: What does Moisture Sensitivity Level (MSL) mean for component selection? A: MSL indicates the maximum time a component can be exposed to moisture before soldering. MSL 1 (Unlimited) allows indefinite storage without moisture control. MSL 3 (168 Hours) requires baking or desiccant storage if the component is exposed to ambient humidity for more than 168 hours before reflow soldering. Selection depends on manufacturing process and storage conditions.

Q: Can I use a substitute part with a wider voltage supply range in a 4.5V ~ 5.5V application? A: Yes. Parts specified for 1.7V ~ 5.5V or 2.5V ~ 5.5V voltage ranges are fully compatible in applications operating within the 4.5V ~ 5.5V window. The wider range indicates the component functions across a broader supply voltage spectrum but does not affect operation at the narrower range.

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