FT24C02A-UTR-B Equivalent & Substitute Parts

Part Overview

The FT24C02A-UTR-B is a 2Kbit EEPROM memory IC with I2C interface manufactured by Fremont Micro Devices Ltd. This device operates at 1 MHz clock frequency with 550 ns access time, housed in an 8-TSSOP surface mount package. The product is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers. Substitute parts must maintain compatibility with the core electrical specifications and physical packaging requirements of the original design.

Key Parameters

Parameter	FT24C02A-UTR-B
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 / Case	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Critical Parameters (Must Match):

Memory Size: 2Kbit
Memory Organization: 256 x 8
Memory Interface: I2C
Package / Case: 8-TSSOP (0.173", 4.40mm Width)
Mounting Type: Surface Mount
Write Cycle Time: 5 ms

Compatible Variation Parameters:

Clock Frequency: 1 MHz (direct equivalent) or 400 kHz (reduced speed, backward compatible)
Access Time: 550 ns (direct equivalent) or 900 ns (slower, acceptable for I2C protocol)
Voltage Supply Range: Must encompass or match the original 1.8V ~ 5.5V range
Operating Temperature: Must support -40°C ~ 85°C minimum

Direct Equivalent (1 MHz, 550 ns): AT24HC02C-XHM-T from Microchip Technology meets all electrical and physical specifications with active product status.

Compatible Alternatives (400 kHz, 900 ns): Multiple Microchip Technology variants operate at reduced clock frequency and access time but maintain full I2C protocol compatibility and identical packaging. These include 24AA02-I/ST, 24AA024-I/ST, 24AA024H-I/ST, 24AA025-I/ST, 24AA025T-I/ST, 24AA02H-I/ST, 24AA52-I/ST, 24LC025-E/ST, and 24LC02BH-E/ST.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temp	Package	Product Status
FT24C02A-UTR-B	Fremont Micro Devices Ltd	2Kbit	1 MHz	550 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Discontinued
AT24HC02C-XHM-T	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24AA02-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24AA024-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24AA024H-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24AA025-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24AA025T-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24AA02H-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24AA52-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24LC025-E/ST	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active
24LC02BH-E/ST	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active

Engineering Selection Recommendations

Primary Selection: AT24HC02C-XHM-T

The AT24HC02C-XHM-T is the direct electrical and functional equivalent of the FT24C02A-UTR-B. It maintains identical clock frequency (1 MHz), access time (550 ns), and operating temperature range (-40°C ~ 85°C). The voltage supply range (1.7V ~ 5.5V) is compatible with the original specification. This part is manufactured by Microchip Technology with active product status and ROHS3 compliance. Packaging is 8-TSSOP with Cut Tape and Digi-Reel options available.

Secondary Selection: 24AA02-I/ST, 24AA024-I/ST, 24AA024H-I/ST, 24AA025-I/ST, 24AA025T-I/ST, 24AA02H-I/ST, 24AA52-I/ST

These alternatives operate at 400 kHz clock frequency with 900 ns access time. All maintain the 2Kbit capacity, 256 x 8 organization, I2C interface, and 8-TSSOP packaging. Voltage supply ranges are compatible with the original design. These parts are suitable for applications where reduced clock frequency does not impact system performance. All are manufactured by Microchip Technology with active product status and ROHS3 compliance.

Extended Temperature Range Option: 24LC025-E/ST, 24LC02BH-E/ST

These variants support extended operating temperature to 125°C and are suitable for applications requiring higher temperature operation. Voltage supply range is 2.5V ~ 5.5V, which is narrower than the original specification. These parts are recommended only when extended temperature capability is required and the minimum supply voltage of 2.5V is acceptable for the application.

Frequently Asked Questions (FAQ)

Q: Can I use a 400 kHz part as a substitute for the 1 MHz FT24C02A-UTR-B?

A: Yes. The 400 kHz variants are I2C protocol compatible and will function in applications designed for the original part. I2C bus speed is determined by the master controller, not the slave device. A 400 kHz slave device operates correctly on a 1 MHz I2C bus. The 900 ns access time is slower than the original 550 ns but remains within acceptable I2C timing margins.

Q: What is the difference between the various Microchip 24AA and 24LC part numbers?

A: The primary differences are voltage supply range and operating temperature. 24AA variants support 1.7V ~ 5.5V supply and -40°C ~ 85°C operation. 24LC variants support 2.5V ~ 5.5V supply and extended temperature to 125°C. All maintain identical memory capacity, organization, interface, and packaging.

Q: Is the AT24HC02C-XHM-T a direct pin-for-pin replacement?

A: Yes. The AT24HC02C-XHM-T is housed in the same 8-TSSOP package with identical pinout and electrical characteristics. No circuit modifications are required for substitution.

Q: What packaging options are available for substitute parts?

A: AT24HC02C-XHM-T is available in Cut Tape and Digi-Reel packaging. Microchip 24AA variants are available in Tube packaging. 24AA025T-I/ST is available in Tape & Reel format. 24LC variants are available in Tube packaging. Packaging selection depends on assembly requirements and volume.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the compliance status of the original FT24C02A-UTR-B.

Q: Can I use 24LC025-E/ST or 24LC02BH-E/ST if my application only requires -40°C ~ 85°C operation?

A: Yes. These parts are backward compatible with the original temperature range. However, the voltage supply range is limited to 2.5V ~ 5.5V. Use these parts only if your application supply voltage is 2.5V or higher.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message