34AA02-E/SN EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 34AA02-E/SN is a 2Kbit I2C EEPROM memory IC manufactured by Microchip Technology, designed for non-volatile data storage applications requiring I2C serial communication at 400 kHz. The device operates across a wide voltage range of 1.7V to 5.5V and supports industrial temperature ranges from -40°C to 125°C. With an active product status and ROHS3 compliance, this component is suitable for embedded systems, IoT devices, and industrial control applications. Substitute parts are identified based on matching core electrical parameters and package compatibility to ensure functional interchangeability in circuit designs.

Key Parameters

Parameter	Value
Memory Size	2Kbit
Memory Organization	256 x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Write Cycle Time	5ms
Access Time	900 ns
Voltage Supply Range	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
Package Type	8-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 34AA02-E/SN are classified based on strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Memory Size: 2Kbit (256 x 8 organization)
Memory Interface: I2C serial communication
Clock Frequency: 400 kHz minimum
Package Type: 8-SOIC or 8-SOP variants with compatible pinout
Voltage Supply Range: Minimum 1.7V support
RoHS3 Compliance: Required for regulatory equivalence

Substitution Categories:

Direct Parametric Equivalents maintain all electrical specifications including 400 kHz clock frequency, 900 ns access time, and 5ms write cycle time. These parts are sourced from Microchip Technology and STMicroelectronics with identical or superior performance characteristics.

Manufacturer Recommended Alternatives from Rohm Semiconductor and Renesas Electronics provide functional equivalence with minor parameter variations. These parts maintain 2Kbit capacity, I2C interface, and 400 kHz operation but may feature different voltage supply minimums (1.6V or 1.8V) or operating temperature ranges (-40°C to 85°C versus -40°C to 125°C).

Enhanced Performance Options such as the M24C02-DRMN8TP/K from STMicroelectronics offer 1 MHz clock frequency and 450 ns access time, providing superior performance while maintaining backward compatibility with 400 kHz I2C bus operation.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Write Cycle Time	Voltage Supply	Operating Temperature	Package	Inventory
34AA02-E/SN	Microchip Technology	2Kbit	400 kHz	900 ns	5ms	1.7V ~ 5.5V	-40°C ~ 125°C	8-SOIC (0.154")	2128 Pcs
24AA025E48-E/SN	Microchip Technology	2Kbit	400 kHz	900 ns	5ms	1.7V ~ 5.5V	-40°C ~ 125°C	8-SOIC (0.154")	2200 Pcs
M24C02-FMN6TP	STMicroelectronics	2Kbit	400 kHz	900 ns	5ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC (0.154")	27113 Pcs
M24C02-RMN6TP	STMicroelectronics	2Kbit	400 kHz	900 ns	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC (0.154")	705200 Pcs
M24C02-DRMN8TP/K	STMicroelectronics	2Kbit	1 MHz	450 ns	4ms	1.8V ~ 5.5V	-40°C ~ 105°C	8-SOIC (0.154")	3300 Pcs
R1EX24002ASAS0I#S0	Renesas Electronics	2Kbit	400 kHz	900 ns	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC (0.154")	3210 Pcs
BR24G02F-3GTE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	5ms	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOP (0.173")	2880 Pcs
BR24L02FJ-WE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOP-J (0.154")	15154 Pcs
BR24T02F-WE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	5ms	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOP (0.173")	25653 Pcs
BR24T02FJ-WE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	5ms	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOP-J (0.154")	35200 Pcs

Engineering Selection Recommendations

Tier 1 - Direct Equivalents (Highest Compatibility): The 24AA025E48-E/SN from Microchip Technology provides identical electrical and thermal specifications to the 34AA02-E/SN, including the extended operating temperature range of -40°C to 125°C and matching 1.7V minimum supply voltage. This part is recommended for applications requiring no design modifications.

Tier 2 - Verified Alternatives (Standard Compatibility): The M24C02-FMN6TP and M24C02-RMN6TP from STMicroelectronics maintain full electrical equivalence at 400 kHz I2C operation with verified programmable status. The M24C02-FMN6TP supports the original 1.7V minimum voltage, while the M24C02-RMN6TP requires 1.8V minimum. Both are limited to -40°C to 85°C operating temperature. The M24C02-RMN6TP offers significantly higher inventory availability (705,200 units).

Tier 3 - Enhanced Performance (Superior Specifications): The M24C02-DRMN8TP/K from STMicroelectronics provides enhanced performance with 1 MHz clock frequency and 450 ns access time, supporting faster I2C communication while maintaining backward compatibility with 400 kHz bus operation. This part includes automotive-grade qualification (AEC-Q100) and operates to 105°C, suitable for demanding industrial applications.

Tier 4 - Rohm Semiconductor Alternatives (Package Variants): The BR24T02F-WE2 and BR24T02FJ-WE2 from Rohm Semiconductor provide functional equivalence with 400 kHz I2C operation and 5ms write cycle time. The BR24T02FJ-WE2 maintains the 0.154" package width matching the original part, while BR24T02F-WE2 uses a wider 0.173" package. Both require minimum 1.6V supply voltage and operate to 85°C. The BR24T02FJ-WE2 offers the highest inventory level (35,200 units).

Tier 5 - Renesas Electronics Alternative: The R1EX24002ASAS0I#S0 from Renesas Electronics provides 400 kHz I2C operation with 900 ns access time and 5ms write cycle time. This part requires 1.8V minimum supply voltage and operates to 85°C, with moderate inventory availability (3,210 units).

All substitute parts maintain ROHS3 compliance and MSL Level 1 moisture sensitivity rating, ensuring regulatory and environmental compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can the 24AA025E48-E/SN directly replace the 34AA02-E/SN without circuit modifications?

A: Yes. The 24AA025E48-E/SN is a direct parametric equivalent with identical memory capacity (2Kbit), I2C interface (400 kHz), access time (900 ns), write cycle time (5ms), voltage supply range (1.7V ~ 5.5V), and operating temperature range (-40°C ~ 125°C). The 8-SOIC package dimensions are identical, requiring no PCB layout changes.

Q: What is the primary difference between the M24C02-FMN6TP and M24C02-RMN6TP?

A: Both parts operate at 400 kHz I2C with 900 ns access time and 5ms write cycle time. The M24C02-FMN6TP supports 1.7V minimum supply voltage, while the M24C02-RMN6TP requires 1.8V minimum. Both are limited to -40°C to 85°C operating temperature. The M24C02-RMN6TP has significantly higher inventory availability (705,200 units versus 27,113 units).

Q: Is the M24C02-DRMN8TP/K compatible with existing 34AA02-E/SN designs?

A: Yes, with performance enhancement. The M24C02-DRMN8TP/K operates at 1 MHz clock frequency and 450 ns access time, providing faster performance than the original 400 kHz specification. It maintains backward compatibility with 400 kHz I2C bus operation. The part requires 1.8V minimum supply voltage and operates to 105°C. Automotive-grade qualification (AEC-Q100) provides additional reliability certification.

Q: What are the package differences between Rohm Semiconductor alternatives?

A: The BR24T02FJ-WE2 maintains the original 0.154" package width in 8-SOP-J configuration. The BR24T02F-WE2 uses a wider 0.173" package in 8-SOP configuration. Both provide identical electrical performance at 400 kHz I2C operation. Package selection depends on PCB layout constraints and available footprint space.

Q: Do all substitute parts meet the original RoHS3 compliance requirement?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 moisture sensitivity rating, ensuring regulatory equivalence with the 34AA02-E/SN for environmental and compliance requirements.

Q: Which substitute part offers the best inventory availability?

A: The M24C02-RMN6TP from STMicroelectronics provides the highest inventory level at 705,200 units. This part maintains 400 kHz I2C operation, 900 ns access time, and 5ms write cycle time, with the only limitation being 1.8V minimum supply voltage and -40°C to 85°C operating temperature range.

Q: Can the BR24L02FJ-WE2 be used in applications requiring extended temperature operation?

A: The BR24L02FJ-WE2 operates to -40°C to 85°C, which is narrower than the original 34AA02-E/SN range of -40°C to 125°C. This part is suitable for standard industrial applications but not for high-temperature environments exceeding 85°C. The part is verified programmable and offers high inventory availability (15,154 units).

Q: What is the significance of the automotive-grade qualification on the M24C02-DRMN8TP/K?

A: The AEC-Q100 qualification indicates the M24C02-DRMN8TP/K meets automotive industry reliability and quality standards. This certification is relevant for automotive, industrial control, and mission-critical applications requiring enhanced reliability documentation and testing compliance.

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