FT24C02A-5PR-T EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The FT24C02A-5PR-T is a 2Kbit I2C EEPROM memory IC manufactured by Fremont Micro Devices Ltd in SOT-23-5 surface mount packaging. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and production continuity. The device operates across a wide supply voltage range (1.8V to 5.5V) and temperature range (-40°C to 85°C), serving applications requiring non-volatile serial memory with I2C interface.

Key Parameters

Parameter	Value
Memory Type	Non-Volatile EEPROM
Memory Size	2Kbit
Memory Organization	256 x 8
Memory Interface	I2C
Clock Frequency	1 MHz
Access Time	550 ns
Write Cycle Time	5 ms
Voltage Supply Range	1.8V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	SOT-23-5 (TSOT-23-5)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the FT24C02A-5PR-T is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Memory capacity: 2Kbit (256 x 8 organization)
Interface protocol: I2C serial communication
Package type: SOT-23-5 surface mount
Supply voltage compatibility: minimum 1.8V support
Operating temperature range: minimum -40°C to 85°C coverage
Write cycle time: 5 ms maximum
RoHS3 compliance

Parametric Equivalent: FT24C02A-KPR-T from Fremont Micro Devices Ltd matches all electrical and mechanical specifications identically, differing only in packaging format (Tape & Reel vs. individual packaging).

Similar Substitutes: Parts from Microchip Technology (24AA02 and 24LC02 series) and Atmel/Microchip (AT24 series) meet core functional requirements but exhibit variations in clock frequency (400 kHz vs. 1 MHz) and access time (900 ns vs. 550 ns). These differences are within acceptable tolerance for most I2C EEPROM applications but represent performance trade-offs.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Temp Range	Package	Status
FT24C02A-5PR-T	Fremont Micro Devices	2Kbit	1 MHz	550 ns	1.8V ~ 5.5V	-40°C ~ 85°C	SOT-23-5	Discontinued
FT24C02A-KPR-T	Fremont Micro Devices	2Kbit	1 MHz	550 ns	1.8V ~ 5.5V	-40°C ~ 85°C	SOT-23-5	Active
24AA02T-I/OT	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	SOT-23-5	Active
24AA02HT-I/OT	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	SOT-23-5	Active
24LC02BT-E/OT	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	SOT-23-5	Active
24LC02BT-I/OT	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	SOT-23-5	Active
AT24C02C-STUM-T	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	SOT-23-5	Active
AT24CS02-STUM-T	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	SOT-23-5	Active
AT24MAC402-STUM-T	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	SOT-23-5	Active

Engineering Selection Recommendations

First Priority - Parametric Equivalent: FT24C02A-KPR-T is the direct replacement, offering identical electrical performance and specifications. This part is currently active in production with 916 units in stock, providing immediate availability without design modification.

Second Priority - Performance-Matched Alternatives: AT24C02C-STUM-T, AT24CS02-STUM-T, and AT24MAC402-STUM-T from Microchip Technology maintain the 1 MHz clock frequency and 550 ns access time of the original part. These are suitable for applications where timing performance is critical. All three are ROHS3 compliant with MSL-1 rating and support the required -40°C to 85°C temperature range.

Third Priority - Functional Equivalents: 24AA02T-I/OT and 24LC02BT series parts from Microchip Technology provide 2Kbit I2C EEPROM functionality in SOT-23-5 packaging with reduced clock frequency (400 kHz) and longer access time (900 ns). These are suitable for applications where I2C bus speed is not a limiting factor. The 24LC02BT-E/OT variant supports extended temperature operation to 125°C.

All recommended substitutes maintain ROHS3 compliance, MSL-1 moisture sensitivity rating, and I2C protocol compatibility. Selection should be based on specific application timing requirements and thermal operating conditions.

Frequently Asked Questions (FAQ)

Q: Can I use a 400 kHz I2C EEPROM as a direct replacement for the 1 MHz FT24C02A-5PR-T?

A: Functional compatibility exists if your application does not require 1 MHz I2C bus operation. The 24AA02 and 24LC02 series operate at 400 kHz maximum, which is compatible with standard I2C bus speeds. Verify your system controller supports this lower frequency before substitution.

Q: What is the difference between the FT24C02A-5PR-T and FT24C02A-KPR-T?

A: Both parts are electrically identical with matching specifications. The primary difference is packaging format: FT24C02A-5PR-T uses individual packaging while FT24C02A-KPR-T is supplied in Tape & Reel format. The KPR variant is currently active and recommended for new designs.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed in the substitute table carry ROHS3 compliance certification and MSL-1 moisture sensitivity rating, meeting current environmental and reliability standards.

Q: Can I use the 24LC02BT-E/OT in applications requiring -40°C to 125°C operation?

A: Yes. The 24LC02BT-E/OT supports the extended temperature range of -40°C to 125°C, exceeding the original part's -40°C to 85°C specification. However, verify that your application circuit design is validated for this extended range.

Q: What is the minimum supply voltage for each substitute part?

A: FT24C02A-5PR-T and FT24C02A-KPR-T support 1.8V minimum. Microchip 24AA02 series supports 1.7V minimum. Microchip 24LC02 series supports 2.5V minimum. Verify your power supply design meets the minimum voltage requirement of your selected part.

Q: Are there packaging differences between SOT-23-5 and TSOT-23-5?

A: TSOT-23-5 designates a thin variant of the SOT-23-5 package. All parts listed use compatible SOT-23-5 surface mount packaging suitable for standard PCB assembly processes. Verify footprint compatibility with your existing design.

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