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AT24C02N-10SC EEPROM Equivalent & Substitute Parts
Part Overview
The AT24C02N-10SC is a 2Kbit I2C EEPROM memory IC manufactured by Microchip Technology, packaged in 8-SOIC form factor. This part operates at 400 kHz clock frequency with 900 ns access time and supports supply voltages from 4.5V to 5.5V across an operating temperature range of 0°C to 70°C. The AT24C02N-10SC is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | AT24C02N-10SC |
|---|---|
| Memory Size | 2Kbit |
| Memory Organization | 256 x 8 |
| Memory Interface | I2C |
| Clock Frequency | 400 kHz |
| Access Time | 900 ns |
| Write Cycle Time | 5 ms |
| Voltage Supply Range | 4.5V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS non-compliant |
Substitute Part Grouping Explanation
Substitution for the AT24C02N-10SC is determined by the following critical parameters: 2Kbit memory capacity, I2C interface protocol, 8-SOIC package compatibility, and electrical specifications within the defined voltage and temperature operating ranges. Substitute parts must maintain identical memory organization (256 x 8) and I2C communication protocol. Clock frequency, access time, and write cycle time variations are acceptable provided the substitute part meets or exceeds the performance requirements of the original specification. Package dimensions must remain compatible with 8-SOIC footprints. Parts are grouped by manufacturer recommendation status and product lifecycle stage (active vs. obsolete).
Parameter Comparison
| Part Number | Manufacturer | Memory Size | Clock Frequency | Access Time | Write Cycle Time | Voltage Supply | Operating Temperature | Package | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| AT24C02N-10SC | Microchip Technology | 2Kbit | 400 kHz | 900 ns | 5 ms | 4.5V ~ 5.5V | 0°C ~ 70°C | 8-SOIC | Obsolete | RoHS non-compliant |
| 24AA02/SN | Microchip Technology | 2Kbit | 400 kHz | 900 ns | 5 ms | 1.7V ~ 5.5V | 0°C ~ 70°C | 8-SOIC | Active | ROHS3 Compliant |
| 24C02C-E/SN | Microchip Technology | 2Kbit | 100 kHz | 4.6 µs | 1.5 ms | 4.5V ~ 5.5V | -40°C ~ 125°C | 8-SOIC | Active | ROHS3 Compliant |
| 24C02C-I/SN | Microchip Technology | 2Kbit | 400 kHz | 900 ns | 1 ms | 4.5V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| 24C02C/SN | Microchip Technology | 2Kbit | 400 kHz | 4.6 µs | 1.5 ms | 4.5V ~ 5.5V | 0°C ~ 70°C | 8-SOIC | Active | ROHS3 Compliant |
| 24C02CT/SN | Microchip Technology | 2Kbit | 400 kHz | 4.6 µs | 1.5 ms | 4.5V ~ 5.5V | 0°C ~ 70°C | 8-SOIC | Active | ROHS3 Compliant |
| 24C02CT-E/SN | Microchip Technology | 2Kbit | 100 kHz | 4.6 µs | 1.5 ms | 4.5V ~ 5.5V | -40°C ~ 125°C | 8-SOIC | Active | ROHS3 Compliant |
| 24C02CT-I/SN | Microchip Technology | 2Kbit | 400 kHz | 900 ns | 1 ms | 4.5V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| BR24C02-MN6TP | Rohm Semiconductor | 2Kbit | 400 kHz | Not specified | 5 ms | 4.5V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | Not For New Designs | ROHS3 Compliant |
| BR24G02F-3GTE2 | Rohm Semiconductor | 2Kbit | 400 kHz | Not specified | 5 ms | 1.6V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| BR24L02FJ-WE2 | Rohm Semiconductor | 2Kbit | 400 kHz | Not specified | 5 ms | 1.8V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
Engineering Selection Recommendations
For direct replacement of the AT24C02N-10SC in active production, 24C02CT-I/SN is the primary selection. This part maintains identical memory capacity, I2C interface, and 8-SOIC packaging while offering improved specifications: faster write cycle time (1 ms vs. 5 ms), extended operating temperature range (-40°C to 85°C), and ROHS3 compliance. The 24C02CT-I/SN is actively produced and verified for programmability.
For applications requiring extended temperature operation beyond 85°C, 24C02CT-E/SN supports -40°C to 125°C with reduced clock frequency (100 kHz). This variant is suitable where thermal headroom is critical.
The 24AA02/SN offers the widest supply voltage range (1.7V to 5.5V) while maintaining 400 kHz operation and 8-SOIC packaging. This part is recommended for low-voltage applications and is actively produced with ROHS3 compliance.
Rohm Semiconductor alternatives (BR24C02-MN6TP, BR24G02F-3GTE2, BR24L02FJ-WE2) provide cross-manufacturer options. BR24G02F-3GTE2 and BR24L02FJ-WE2 are active products with extended voltage ranges (1.6V and 1.8V minimum respectively). BR24C02-MN6TP is marked "Not For New Designs" and should be avoided for new development.
All recommended substitutes are ROHS3 compliant, addressing the non-compliance status of the original AT24C02N-10SC.
Frequently Asked Questions (FAQ)
Q: Can 24C02CT-I/SN directly replace AT24C02N-10SC in existing designs?
A: Yes. Both parts share identical memory capacity (2Kbit), I2C interface, 8-SOIC package dimensions, and 400 kHz clock frequency. The 24C02CT-I/SN offers superior write performance (1 ms vs. 5 ms) and extended temperature range (-40°C to 85°C vs. 0°C to 70°C), making it a compatible upgrade.
Q: What is the difference between 24C02CT/SN and 24C02CT-I/SN?
A: Both parts operate at 400 kHz with 8-SOIC packaging. The 24C02CT-I/SN has faster write cycle time (1 ms vs. 1.5 ms) and extended operating temperature (-40°C to 85°C vs. 0°C to 70°C). The 24C02CT/SN is suitable for standard industrial temperature ranges, while 24C02CT-I/SN is preferred for wider thermal environments.
Q: Why does 24C02C-E/SN operate at 100 kHz instead of 400 kHz?
A: The 24C02C-E/SN is a lower-speed variant designed for extended temperature operation (-40°C to 125°C). Reduced clock frequency is a design trade-off for enhanced thermal stability. This part is suitable only where the lower I2C speed is acceptable.
Q: Are Rohm Semiconductor parts compatible with Microchip Technology parts?
A: Yes, from a functional standpoint. All listed Rohm parts (BR24C02-MN6TP, BR24G02F-3GTE2, BR24L02FJ-WE2) maintain 2Kbit capacity, I2C interface, and 8-SOIC packaging. However, BR24C02-MN6TP is marked "Not For New Designs" and should not be selected for new development. BR24G02F-3GTE2 and BR24L02FJ-WE2 are active alternatives with extended voltage ranges.
Q: What does "Not For New Designs" mean for BR24C02-MN6TP?
A: This designation indicates the part is in end-of-life phase. While existing inventory may be available, the manufacturer does not recommend this part for new circuit designs. Use active alternatives such as BR24G02F-3GTE2 or BR24L02FJ-WE2 instead.
Q: Is RoHS compliance important for this substitution?
A: Yes. The original AT24C02N-10SC is RoHS non-compliant. All recommended substitutes are ROHS3 compliant, meeting current environmental and regulatory requirements for electronics manufacturing and distribution.
Q: Can 24AA02/SN be used in 5V-only systems?
A: Yes. The 24AA02/SN supports 1.7V to 5.5V supply range, which encompasses 5V operation. Its wider voltage range makes it suitable for both 5V and lower-voltage applications while maintaining 400 kHz I2C performance and 8-SOIC packaging.
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