24LC025T-I/MC EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC025T-I/MC is a 2Kbit I2C EEPROM memory IC manufactured by Microchip Technology, supplied in 8-DFN (2x3) packaging via Tape & Reel. This non-volatile memory device operates at 400 kHz I2C clock frequency with 900 ns access time and supports supply voltages from 2.5V to 5.5V across the industrial temperature range of -40°C to 85°C. The part is ROHS3 compliant and currently active in production with 878 units in stock. Equivalent and substitute parts are identified based on matching memory capacity, interface protocol, package form factor, and electrical operating parameters to ensure direct functional replacement in circuit designs.

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	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-VFDFN Exposed Pad
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 24LC025T-I/MC are classified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

Memory capacity: 2Kbit (256 x 8 organization)
Interface protocol: I2C serial communication
Package footprint: 8-pin DFN/MLP/UFDFN variants (2x3mm)
Supply voltage compatibility: Minimum 2.5V operation
Temperature range: -40°C to 85°C minimum

Substitution Categories:

Category 1 - Parametric Equivalents (Microchip Technology): Parts 24LC024T-I/MC and 24LC02BT-I/MC match all electrical and mechanical specifications of the main part, including 400 kHz I2C frequency, 900 ns access time, 5ms write cycle, and 2.5V-5.5V supply range. These parts are packaged in Tape & Reel format with identical 8-DFN footprint.

Category 2 - MFR Recommended Alternatives (Microchip Technology): Part 24AA02T-I/MC is manufacturer-recommended and offers extended supply voltage range (1.7V-5.5V) with identical memory specifications and 400 kHz I2C operation. Packaging differs as Cut Tape & Digi-Reel format. RoHS compliance differs (non-compliant vs. ROHS3).

Category 3 - Cross-Manufacturer Equivalents (STMicroelectronics): Parts M24C02-RMC6TG and M24C02-FMC6TG provide 2Kbit I2C EEPROM functionality with 400 kHz operation and 900 ns access time in 8-UFDFPN packaging. Supply voltage extends to 1.7V-1.8V minimum. Both are ROHS3 compliant.

Category 4 - Enhanced Performance Alternative (STMicroelectronics): Part M24C02-DRMF3TG/K operates at 1 MHz I2C frequency with 450 ns access time and 4ms write cycle, supporting -40°C to 125°C temperature range. Includes AEC-Q100 automotive qualification. Supply range 1.8V-5.5V. Packaged in 8-MLP format.

Parameter Comparison

Part Number	Manufacturer	Memory Size	I2C Frequency	Access Time	Write Cycle	Supply Voltage	Temp Range	Package	RoHS Status	Inventory
24LC025T-I/MC	Microchip	2Kbit	400 kHz	900 ns	5ms	2.5V-5.5V	-40°C to 85°C	8-DFN (TR)	ROHS3	878
24AA02T-I/MC	Microchip	2Kbit	400 kHz	900 ns	5ms	1.7V-5.5V	-40°C to 85°C	8-DFN (CT)	Non-compliant	18908
24LC024T-I/MC	Microchip	2Kbit	400 kHz	900 ns	5ms	2.5V-5.5V	-40°C to 85°C	8-DFN (TR)	Non-compliant	6800
24LC02BT-I/MC	Microchip	2Kbit	400 kHz	900 ns	5ms	2.5V-5.5V	-40°C to 85°C	8-DFN (TR)	ROHS3	30100
M24C02-RMC6TG	STMicroelectronics	2Kbit	400 kHz	900 ns	5ms	1.8V-5.5V	-40°C to 85°C	8-UFDFPN (CT)	ROHS3	2960
M24C02-FMC6TG	STMicroelectronics	2Kbit	400 kHz	900 ns	5ms	1.7V-5.5V	-40°C to 85°C	8-UFDFPN (CT)	ROHS3	19108
M24C02-DRMF3TG/K	STMicroelectronics	2Kbit	1 MHz	450 ns	4ms	1.8V-5.5V	-40°C to 125°C	8-MLP (CT)	ROHS3	2956

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): 24LC02BT-I/MC is the primary substitute, offering identical electrical parameters, ROHS3 compliance matching the main part, and highest inventory availability (30,100 units). Tape & Reel packaging and 8-DFN footprint ensure mechanical compatibility.

For Extended Supply Voltage Range: 24AA02T-I/MC supports operation down to 1.7V, enabling use in lower-voltage applications. Higher inventory (18,908 units) supports supply chain continuity. Note: RoHS non-compliance differs from main part specification.

For Cross-Manufacturer Standardization: M24C02-FMC6TG (STMicroelectronics) provides ROHS3-compliant 2Kbit I2C EEPROM with 1.7V-5.5V supply range and 19,108 units in stock. 8-UFDFPN package requires PCB layout verification for pin compatibility with 8-DFN footprint.

For Automotive and Extended Temperature Applications: M24C02-DRMF3TG/K includes AEC-Q100 automotive qualification and -40°C to 125°C operating range. Enhanced performance specifications (1 MHz I2C, 450 ns access time) support higher-speed applications. 8-MLP package requires footprint verification.

For Supply Chain Optimization: Parts 24LC024T-I/MC and M24C02-RMC6TG offer alternative sourcing with adequate inventory (6,800 and 2,960 units respectively) while maintaining core 2Kbit I2C EEPROM functionality.

Frequently Asked Questions (FAQ)

Q: Can 24AA02T-I/MC replace 24LC025T-I/MC in all applications? A: 24AA02T-I/MC is electrically equivalent for I2C EEPROM functionality with identical 400 kHz operation and 900 ns access time. The extended supply voltage range (1.7V-5.5V vs. 2.5V-5.5V) provides additional flexibility. However, RoHS compliance status differs; verify compliance requirements for your application. Packaging format differs (Cut Tape vs. Tape & Reel), which may affect procurement and assembly processes.

Q: What are the package compatibility considerations between DFN and UFDFPN variants? A: Both 8-DFN and 8-UFDFPN packages maintain 2x3mm footprint dimensions and identical pin assignments for I2C EEPROM operation. PCB layout and solder reflow profiles may differ slightly due to package construction variations. Verify footprint libraries and thermal characteristics with your PCB design tools before substitution.

Q: Is M24C02-DRMF3TG/K suitable for non-automotive applications? A: Yes. M24C02-DRMF3TG/K meets all standard 2Kbit I2C EEPROM requirements and exceeds performance specifications with 1 MHz I2C frequency and extended temperature range (-40°C to 125°C). AEC-Q100 qualification indicates enhanced reliability testing. Use in non-automotive applications is supported; the automotive qualification represents additional quality assurance.

Q: How do I verify pin compatibility when switching between manufacturers? A: All listed substitute parts maintain standard I2C EEPROM pinout: SDA (Serial Data), SCL (Serial Clock), VSS (Ground), and VCC (Supply). Verify pin assignments in device datasheets and confirm PCB footprint compatibility with your design tools before assembly. Package type (DFN vs. UFDFPN vs. MLP) affects physical placement but not electrical interface.

Q: What is the impact of different write cycle times on system performance? A: Write cycle time (5ms for most parts, 4ms for M24C02-DRMF3TG/K) defines the duration required to complete a single page write operation. Faster write cycles (4ms) reduce overall programming time in applications performing frequent memory updates. For typical low-frequency data logging or configuration storage, the 1ms difference is negligible. Verify application timing requirements before selecting parts with different write cycle specifications.

Q: Are all substitute parts available in the same packaging format? A: No. The main part (24LC025T-I/MC) uses Tape & Reel packaging. Microchip alternatives (24LC024T-I/MC, 24LC02BT-I/MC) also use Tape & Reel. STMicroelectronics parts (M24C02 series) use Cut Tape & Digi-Reel format. Verify packaging compatibility with your assembly process and procurement requirements.

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