FT24C02A-USR-T Equivalent & Substitute Parts

Part Overview

The FT24C02A-USR-T is a 2Kbit I2C EEPROM memory IC manufactured by Fremont Micro Devices Ltd, operating at 1 MHz with 550 ns access time in an 8-SOP package. The device is Active status with 19,041 units in stock. Substitute parts are identified when equivalent memory capacity, I2C interface, and compatible packaging are maintained within specified electrical and thermal operating ranges.

Key Parameters

Parameter	Value
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-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution is determined by the following criteria:

Primary Compatibility Requirements:

Memory Size: 2Kbit (256 x 8 organization)
Memory Interface: I2C
Package Type: 8-SOIC or 8-SOP variants with 0.154" to 0.173" width
Mounting Type: Surface Mount

Secondary Compatibility Factors:

Clock Frequency: 1 MHz operation (primary group) or 400 kHz operation (secondary group with reduced speed)
Access Time: 550 ns (primary) or 400 ns (faster) or 900 ns (slower)
Voltage Supply Range: Minimum 1.7V to 1.8V; Maximum 5.5V
Operating Temperature: -40°C to 85°C minimum range
Write Cycle Time: 5 ms (standard across all parts)

Substitute parts are grouped into two categories: direct 1 MHz equivalents and 400 kHz alternatives. Parts with identical electrical specifications and package dimensions are fully interchangeable. Parts with reduced clock frequency or extended access time remain functionally compatible but operate at lower performance levels.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temp	Package	Inventory
FT24C02A-USR-T	Fremont Micro Devices	2Kbit	1 MHz	550 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOP	19,041
24LC024HT-I/SN	Microchip Technology	2Kbit	1 MHz	400 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	16,889
AT24CS02-SSHM-T	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	3,850
AT24HC02C-SSHM-T	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	1,488
AT34C02D-SSHM-T	Microchip Technology	2Kbit	1 MHz	Not specified	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	7,208
24AA024T-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	3,700
24AA025T-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	4,138
24AA02T-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	6,640
BR24G02FJ-3GTE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOP-J	24,840
BR24A02F-WME2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	2.5V ~ 5.5V	-40°C ~ 105°C	8-SOP	2,700
BR24G02F-3GTE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOP	2,880

Engineering Selection Recommendations

Direct Equivalents (1 MHz, 550 ns Access Time): AT24CS02-SSHM-T and AT24HC02C-SSHM-T are electrically equivalent to FT24C02A-USR-T with identical clock frequency and access time. Both are ROHS3 compliant and Active status. AT24CS02-SSHM-T offers lower moisture sensitivity (MSL 1) compared to AT24HC02C-SSHM-T (MSL 3). AT34C02D-SSHM-T operates at 1 MHz with verified DiGi-Electronics programmability and MSL 3 rating.

Performance-Enhanced Alternatives (1 MHz, 400 ns Access Time): 24LC024HT-I/SN provides faster access time (400 ns) at 1 MHz operation. Voltage supply minimum is 2.5V, which restricts use in applications requiring 1.8V operation. Inventory availability is high at 16,889 units.

Reduced-Speed Alternatives (400 kHz): 24AA024T-I/SN, 24AA025T-I/SN, and 24AA02T-I/SN operate at 400 kHz with 900 ns access time. These are suitable for applications where reduced I2C bus speed is acceptable. All three are ROHS3 compliant and Active status with verified or unverified programmability.

Automotive-Grade Alternative: BR24A02F-WME2 (Rohm Semiconductor) is AEC-Q100 qualified with extended operating temperature range (-40°C to 105°C). Clock frequency is 400 kHz. Minimum voltage supply is 2.5V.

High-Inventory Alternatives: BR24G02FJ-3GTE2 offers the highest inventory (24,840 units) with 400 kHz operation and 8-SOP-J package. Voltage supply range extends to 1.6V minimum.

Frequently Asked Questions (FAQ)

Q: Can I use a 400 kHz part as a substitute for the 1 MHz FT24C02A-USR-T? A: Yes, if the application I2C bus speed is compatible with 400 kHz operation. The 400 kHz parts (24AA024T-I/SN, 24AA025T-I/SN, 24AA02T-I/SN, BR24G02FJ-3GTE2, BR24G02F-3GTE2, BR24A02F-WME2) maintain 2Kbit capacity, 256 x 8 organization, and I2C interface. System performance will be limited to 400 kHz maximum bus speed.

Q: What is the difference between 8-SOP and 8-SOIC packages? A: Both are 8-pin surface mount packages with 0.154" to 0.173" width. The FT24C02A-USR-T uses 8-SOP (0.154" width). Microchip parts use 8-SOIC (0.154" width). Rohm parts use 8-SOP or 8-SOP-J variants (0.173" width). All are mechanically compatible with standard 8-pin SOIC footprints.

Q: Which substitute has the lowest voltage supply requirement? A: BR24G02FJ-3GTE2 and BR24G02F-3GTE2 support 1.6V minimum supply voltage, compared to FT24C02A-USR-T at 1.8V minimum. AT24CS02-SSHM-T and AT24HC02C-SSHM-T support 1.7V minimum.

Q: Are all substitutes ROHS3 compliant? A: Yes, all listed substitute parts are ROHS3 compliant and REACH unaffected.

Q: What is the inventory status of the most readily available substitute? A: BR24G02FJ-3GTE2 has the highest inventory at 24,840 units. 24LC024HT-I/SN has 16,889 units. Both are Active status.

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