24FC02T-E/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24FC02T-E/ST is a 2Kbit I2C EEPROM memory IC manufactured by Microchip Technology, currently in active product status. This non-volatile memory device operates across a wide supply voltage range of 1.7V to 5.5V and supports industrial temperature ranges from -40°C to 125°C. The component is packaged in an 8-TSSOP surface mount configuration and is ROHS3 compliant with unlimited moisture sensitivity rating.

Equivalent and substitute parts are identified when they maintain functional compatibility across memory capacity, interface protocol, package type, and electrical operating parameters. Substitute components must support the same 2Kbit capacity, I2C interface, and 8-TSSOP package footprint to ensure direct replacement capability in existing circuit designs.

Key Parameters

Parameter	24FC02T-E/ST
Memory Size	2Kbit
Memory Organization	256 x 8
Memory Interface	I2C
Clock Frequency	1 MHz
Access Time	450 ns
Write Cycle Time	5ms
Voltage Supply Range	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
Package Type	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 24FC02T-E/ST are qualified based on the following mandatory compatibility criteria:

Memory Capacity & Organization: Substitute parts must provide identical 2Kbit capacity with 256 x 8 bit organization to maintain software and firmware compatibility without modification.

Interface Protocol: I2C interface is required for direct electrical compatibility with existing bus architecture and control logic.

Package & Footprint: 8-TSSOP surface mount package with 0.173" width (4.40mm) ensures mechanical and electrical compatibility with printed circuit board layouts designed for the primary part.

Electrical Parameters: Supply voltage range of 1.7V to 5.5V and write cycle time of 5ms are critical for circuit operation. Access time and clock frequency variations are acceptable within the constraints of system timing requirements.

Compliance & Certifications: ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1) are required for manufacturing and environmental standards alignment.

The M34E02-FDW6TP from STMicroelectronics meets all mandatory substitution criteria despite differences in maximum operating temperature and clock frequency specifications.

Parameter Comparison

Parameter	24FC02T-E/ST (Microchip)	M34E02-FDW6TP (STMicroelectronics)
Memory Size	2Kbit	2Kbit
Memory Organization	256 x 8	256 x 8
Memory Interface	I2C	I2C
Clock Frequency	1 MHz	400 kHz
Access Time	450 ns	900 ns
Write Cycle Time	5ms	5ms
Voltage Supply Range	1.7V ~ 5.5V	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C
Package Type	8-TSSOP (0.173", 4.40mm Width)	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both the 24FC02T-E/ST and M34E02-FDW6TP are active product status components with ROHS3 compliance and REACH unaffected status, meeting current manufacturing and environmental regulations.

The 24FC02T-E/ST operates at 1 MHz clock frequency with 450 ns access time, supporting higher-speed I2C bus operations. The M34E02-FDW6TP operates at 400 kHz with 900 ns access time, suitable for standard-speed I2C applications.

The primary distinction is operating temperature range: the 24FC02T-E/ST supports -40°C to 125°C, while the M34E02-FDW6TP supports -40°C to 85°C. Component selection depends on whether the application requires extended high-temperature operation beyond 85°C.

Both parts maintain identical supply voltage range (1.7V to 5.5V), write cycle time (5ms), and package footprint, ensuring direct substitution capability for applications operating within the M34E02-FDW6TP temperature specification.

Frequently Asked Questions (FAQ)

Q: Can the M34E02-FDW6TP directly replace the 24FC02T-E/ST in all applications?

A: Direct replacement is possible for applications operating within -40°C to 85°C temperature range. Applications requiring operation above 85°C must use the 24FC02T-E/ST to maintain specified performance.

Q: What is the impact of different clock frequencies (1 MHz vs. 400 kHz)?

A: The 24FC02T-E/ST supports faster I2C bus speeds up to 1 MHz, while the M34E02-FDW6TP operates at standard I2C speed of 400 kHz. Both are compatible with I2C protocol; system timing requirements determine which frequency is appropriate.

Q: Are the packages mechanically identical?

A: Both components use 8-TSSOP surface mount packages with identical 0.173" width (4.40mm) and footprint dimensions, ensuring compatibility with existing PCB layouts.

Q: Do both parts meet current compliance requirements?

A: Both the 24FC02T-E/ST and M34E02-FDW6TP are ROHS3 compliant, REACH unaffected, and carry unlimited moisture sensitivity rating (MSL 1), meeting current manufacturing standards.

Q: What is the significance of access time differences (450 ns vs. 900 ns)?

A: Access time represents the delay from address input to data output availability. The 24FC02T-E/ST provides faster access at 450 ns, while the M34E02-FDW6TP requires 900 ns. System timing budgets must accommodate the longer access time if substitution is considered.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message