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FT24C02A-USG-T Equivalent & Substitute Parts
Part Overview
The FT24C02A-USG-T is a 2Kbit I2C EEPROM memory IC manufactured by Fremont Micro Devices Ltd, operating at 1 MHz with 550 ns access time. The device is housed in an 8-SOP package and is actively produced. Substitute parts are identified based on matching memory capacity, interface protocol, package compatibility, and electrical operating ranges. Alternative components enable design flexibility, supply chain continuity, and application-specific performance optimization.
Substiute Parts
Key Parameters
| Parameter | FT24C02A-USG-T |
|---|---|
| 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
Substitute parts are grouped into two categories based on allowed electrical and mechanical parameters:
Category A: Direct Substitutes (1 MHz Operation) Parts operating at 1 MHz clock frequency with matching 550 ns access time or faster. These devices maintain identical I2C protocol, 2Kbit capacity, 256 x 8 organization, and 8-SOIC package footprint. Voltage supply ranges and temperature ratings must encompass or match the main part specifications.
Qualifying parts: 24LC024H-I/SN, AT24CS02-SSHM-T, AT24HC02C-SSHM-T, AT34C02D-SSHM-T
Category B: Functional Substitutes (400 kHz Operation) Parts operating at 400 kHz clock frequency with 900 ns access time. These devices share identical memory capacity, I2C interface, 256 x 8 organization, and 8-SOIC package footprint. Slower clock frequency and access time require application-level verification of timing constraints.
Qualifying parts: 24AA024T-I/SN, 24AA025T-I/SN, 24AA02T-I/SN, BR24A02F-WME2, BR24G02F-3GTE2, BR24G02FJ-3GTE2
Parameter Comparison
| Part Number | Manufacturer | Memory Size | Clock Frequency | Access Time | Voltage Supply | Operating Temp | Package | MSL Rating |
|---|---|---|---|---|---|---|---|---|
| FT24C02A-USG-T | Fremont Micro Devices | 2Kbit | 1 MHz | 550 ns | 1.8V ~ 5.5V | -40°C ~ 85°C | 8-SOP | 1 (Unlimited) |
| 24LC024H-I/SN | Microchip Technology | 2Kbit | 1 MHz | 400 ns | 2.5V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | 1 (Unlimited) |
| AT24CS02-SSHM-T | Microchip Technology | 2Kbit | 1 MHz | 550 ns | 1.7V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | 1 (Unlimited) |
| AT24HC02C-SSHM-T | Microchip Technology | 2Kbit | 1 MHz | 550 ns | 1.7V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | 3 (168 Hours) |
| AT34C02D-SSHM-T | Microchip Technology | 2Kbit | 1 MHz | Not Specified | 1.7V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | 3 (168 Hours) |
| 24AA024T-I/SN | Microchip Technology | 2Kbit | 400 kHz | 900 ns | 1.7V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | 3 (168 Hours) |
| 24AA025T-I/SN | Microchip Technology | 2Kbit | 400 kHz | 900 ns | 1.7V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | 1 (Unlimited) |
| 24AA02T-I/SN | Microchip Technology | 2Kbit | 400 kHz | 900 ns | 1.7V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | 1 (Unlimited) |
| BR24A02F-WME2 | Rohm Semiconductor | 2Kbit | 400 kHz | Not Specified | 2.5V ~ 5.5V | -40°C ~ 105°C | 8-SOP | 1 (Unlimited) |
| BR24G02F-3GTE2 | Rohm Semiconductor | 2Kbit | 400 kHz | Not Specified | 1.6V ~ 5.5V | -40°C ~ 85°C | 8-SOP | 1 (Unlimited) |
| BR24G02FJ-3GTE2 | Rohm Semiconductor | 2Kbit | 400 kHz | Not Specified | 1.6V ~ 5.5V | -40°C ~ 85°C | 8-SOP-J | 1 (Unlimited) |
Engineering Selection Recommendations
For Direct Performance Equivalence (1 MHz Operation): Select AT24CS02-SSHM-T or AT24HC02C-SSHM-T when 1 MHz clock frequency and 550 ns access time are required. Both parts are ROHS3 compliant and operate across -40°C to 85°C. AT24CS02-SSHM-T offers MSL rating 1 (Unlimited) for moisture-sensitive applications. AT24HC02C-SSHM-T provides MSL rating 3 (168 Hours) with extended voltage range to 1.7V minimum.
24LC024H-I/SN operates at 1 MHz with faster 400 ns access time and MSL rating 1 (Unlimited). Minimum voltage supply is 2.5V, which may limit low-voltage applications compared to the main part's 1.8V minimum.
AT34C02D-SSHM-T operates at 1 MHz with verified DiGi-Electronics programmability and MSL rating 3 (168 Hours). This part is suitable for applications requiring confirmed programmability certification.
For Functional Substitution (400 kHz Operation): Select 24AA025T-I/SN or 24AA02T-I/SN when 400 kHz operation is acceptable. Both offer MSL rating 1 (Unlimited) and voltage range 1.7V ~ 5.5V. 24AA024T-I/SN provides verified DiGi-Electronics programmability with MSL rating 3 (168 Hours).
BR24G02FJ-3GTE2 (Rohm Semiconductor) operates at 400 kHz with voltage range 1.6V ~ 5.5V and MSL rating 1 (Unlimited). This part maintains 8-SOP-J package footprint compatibility with the main part's 8-SOP package.
BR24A02F-WME2 (Rohm Semiconductor) operates at 400 kHz with extended temperature range -40°C to 105°C and AEC-Q100 automotive qualification. Minimum voltage supply is 2.5V.
Frequently Asked Questions (FAQ)
Q: Can 400 kHz parts replace the 1 MHz FT24C02A-USG-T? A: 400 kHz parts are functionally compatible only if application timing constraints permit slower I2C bus operation and 900 ns access time. System-level verification is required to confirm acceptable performance.
Q: What is the difference between 8-SOP and 8-SOIC packages? A: Both packages are 8-pin surface-mount configurations with identical 0.154" (3.90mm) width for standard variants. Package designation differences reflect manufacturer nomenclature. Physical footprint compatibility must be confirmed against PCB design specifications.
Q: Are all substitute parts ROHS3 compliant? A: All listed substitute parts are ROHS3 compliant. Compliance status matches the main part FT24C02A-USG-T.
Q: Which substitute offers the widest voltage supply range? A: BR24G02F-3GTE2 and BR24G02FJ-3GTE2 offer 1.6V ~ 5.5V range. FT24C02A-USG-T operates 1.8V ~ 5.5V. BR24G02 variants provide lower minimum voltage operation.
Q: What does MSL rating indicate? A: Moisture Sensitivity Level (MSL) defines storage and handling requirements. MSL 1 (Unlimited) allows indefinite storage without moisture control. MSL 3 (168 Hours) requires controlled humidity storage not exceeding 168 hours at specified conditions before reflow soldering.
Q: Which substitute parts have verified programmability? A: AT34C02D-SSHM-T and 24AA024T-I/SN carry verified DiGi-Electronics programmability certification.
Q: Can BR24A02F-WME2 operate above 85°C? A: BR24A02F-WME2 operates -40°C to 105°C with AEC-Q100 automotive qualification. This extended temperature range exceeds the main part's -40°C to 85°C specification.
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