Equivalent & Substitute Parts for 24C02CT-I/MS

Part Overview

The 24C02CT-I/MS is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 900 ns access time. This device is housed in an 8-MSOP package and operates across the industrial temperature range of -40°C to 85°C. The part is currently in active production status and is RoHS3 compliant.

Substitute parts are necessary when the original 24C02CT-I/MS becomes unavailable, when alternative voltage supply ranges are required for specific applications, or when different packaging formats (Cut Tape vs. Tape & Reel) are preferred for manufacturing processes.

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-MSOP
Write Cycle Time	1ms
RoHS Status	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 24C02CT-I/MS is determined by the following critical parameters:

Core Functional Parameters (Must Match):

Memory Size: 2Kbit
Memory Organization: 256 x 8
Memory Interface: I2C
Package Type: 8-MSOP (0.118", 3.00mm Width)
Operating Temperature Range: -40°C ~ 85°C minimum

Flexible Parameters (May Vary):

Voltage Supply Range: Substitute must support minimum 4.5V operation
Clock Frequency: 400 kHz or higher acceptable
Write Cycle Time: 5ms acceptable (longer than original 1ms)
Packaging Format: Cut Tape (CT) & Digi-Reel® or Tape & Reel (TR) both acceptable
Manufacturer: Microchip Technology or Rohm Semiconductor

Substitute parts are grouped into two categories: Microchip Technology variants with extended voltage ranges (1.7V ~ 5.5V or 2.5V ~ 5.5V) and Rohm Semiconductor alternatives with automotive-grade or enhanced specifications.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Voltage Supply	Clock Frequency	Write Cycle Time	Operating Temp	Package	Product Status
24C02CT-I/MS	Microchip	2Kbit	4.5V ~ 5.5V	400 kHz	1ms	-40°C ~ 85°C	8-MSOP (TR)	Active
24AA024T-I/MS	Microchip	2Kbit	1.7V ~ 5.5V	400 kHz	5ms	-40°C ~ 85°C	8-MSOP (CT)	Active
24AA02T-I/MS	Microchip	2Kbit	1.7V ~ 5.5V	400 kHz	5ms	-40°C ~ 85°C	8-MSOP (CT)	Active
24LC024T-I/MS	Microchip	2Kbit	2.5V ~ 5.5V	400 kHz	5ms	-40°C ~ 85°C	8-MSOP (CT)	Active
24LC02BT-I/MS	Microchip	2Kbit	2.5V ~ 5.5V	400 kHz	5ms	-40°C ~ 85°C	8-MSOP (CT)	Active
24LCS52T-I/MS	Microchip	2Kbit	2.2V ~ 5.5V	400 kHz	5ms	-40°C ~ 85°C	8-MSOP (TR)	Active
BR24A02FVM-WMTR	Rohm	2Kbit	2.5V ~ 5.5V	400 kHz	5ms	-40°C ~ 105°C	8-MSOP (TR)	Active
BR24G02FVJ-3AGTE2	Rohm	2Kbit	1.6V ~ 5.5V	1 MHz	5ms	-40°C ~ 85°C	8-TSSOP (TR)	Active
BR24G02FVJ-3GTE2	Rohm	2Kbit	1.6V ~ 5.5V	400 kHz	5ms	-40°C ~ 85°C	8-TSSOP (TR)	Not For New Designs
BR24G02FVM-3GTTR	Rohm	2Kbit	1.6V ~ 5.5V	400 kHz	5ms	-40°C ~ 85°C	8-MSOP (TR)	Active
BR24L02FVJ-WE2	Rohm	2Kbit	1.8V ~ 5.5V	400 kHz	5ms	-40°C ~ 85°C	8-TSSOP (TR)	Not For New Designs

Engineering Selection Recommendations

For Direct Replacement (Tape & Reel Packaging): The 24LCS52T-I/MS offers the closest functional match with Tape & Reel packaging identical to the original 24C02CT-I/MS. This part maintains 400 kHz I2C operation, 8-MSOP package format, and industrial temperature range. The extended voltage supply range (2.2V ~ 5.5V) provides additional design flexibility while remaining fully compatible with 4.5V ~ 5.5V applications.

For Extended Voltage Range Applications: The 24AA024T-I/MS and 24AA02T-I/MS provide the widest voltage supply range (1.7V ~ 5.5V), enabling operation in low-power and battery-backed applications. Both maintain identical I2C interface specifications and 8-MSOP packaging. The 24AA02T-I/MS has higher inventory availability (10,400 units).

For Automotive or Extended Temperature Requirements: The BR24A02FVM-WMTR (Rohm Semiconductor) extends the operating temperature range to -40°C ~ 105°C and includes AEC-Q100 automotive qualification. This part is suitable for automotive-grade applications requiring enhanced temperature performance while maintaining 2.5V ~ 5.5V voltage compatibility.

For Higher Clock Frequency Applications: The BR24G02FVJ-3AGTE2 operates at 1 MHz I2C clock frequency, providing faster data transfer capability. This part is suitable for applications requiring higher I2C bus speeds while maintaining 2Kbit memory capacity and 8-TSSOP package compatibility.

Parts to Avoid for New Designs: BR24G02FVJ-3GTE2 and BR24L02FVJ-WE2 are marked "Not For New Designs" and should not be selected for new product development.

Frequently Asked Questions (FAQ)

Q: Can I substitute 24AA02T-I/MS for 24C02CT-I/MS in a 5V application? A: Yes. The 24AA02T-I/MS voltage range (1.7V ~ 5.5V) fully encompasses the original part's 4.5V ~ 5.5V requirement. Both parts operate at 400 kHz I2C with identical 8-MSOP packaging and memory organization.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging? A: Tape & Reel (TR) packaging is supplied on continuous reels suitable for automated pick-and-place assembly. Cut Tape (CT) & Digi-Reel® packaging is supplied in smaller quantities on tape. Both formats contain identical die and electrical specifications; the difference is in manufacturing and handling format only.

Q: Why does 24LCS52T-I/MS have a lower minimum voltage (2.2V) than the original 24C02CT-I/MS (4.5V)? A: The 24LCS52T-I/MS is designed with a wider voltage tolerance window. The lower minimum voltage (2.2V) does not affect compatibility with 4.5V ~ 5.5V applications; it simply allows operation at lower voltages if required by the application.

Q: Is the 5ms write cycle time of substitute parts acceptable for 24C02CT-I/MS replacement? A: Yes. The original 24C02CT-I/MS specifies 1ms write cycle time, while most substitutes specify 5ms. Both values are acceptable for I2C EEPROM applications. The longer write cycle time does not affect functional compatibility; it only impacts the maximum write throughput in applications performing sequential writes.

Q: Can I use BR24G02FVJ-3AGTE2 (1 MHz) as a direct replacement for 24C02CT-I/MS (400 kHz)? A: Yes, with system-level verification. The BR24G02FVJ-3AGTE2 operates at 1 MHz I2C clock frequency, which is backward compatible with 400 kHz bus speeds. However, the package is 8-TSSOP rather than 8-MSOP, requiring PCB layout verification. The part is suitable for replacement only if the PCB footprint accommodates 8-TSSOP dimensions.

Q: Which substitute part has the highest inventory availability? A: The 24AA02T-I/MS has the highest inventory with 10,400 units in stock, followed by 24LCS52T-I/MS with 7,200 units.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts are RoHS3 compliant and REACH unaffected, matching the environmental compliance status of the original 24C02CT-I/MS.

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