Equivalent & Substitute Parts for 34AA02-I/MS

Part Overview

The 34AA02-I/MS is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 900 ns access time. This non-volatile memory device is packaged in 8-MSOP surface mount configuration and operates across a supply voltage range of 1.7V to 5.5V with temperature range of -40°C to 85°C. The part is currently in active product status and ROHS3 compliant. Substitute parts are necessary to address inventory availability, extended temperature requirements, automotive qualification needs, or higher clock frequency applications while maintaining core memory functionality.

Key Parameters

Parameter	Value
Memory Size	2Kbit
Memory Organization	256 x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5ms
Voltage Supply Range	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-MSOP
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict parameter matching across memory capacity, interface protocol, clock frequency, voltage supply range, operating temperature, and package compatibility. Parts are grouped into the following categories:

Parametric Equivalents (Full Compatibility): Parts matching all critical parameters including 2Kbit capacity, I2C interface, 400 kHz clock frequency, 5ms write cycle time, and identical voltage/temperature ranges. These parts are direct replacements with no functional or electrical differences.

Manufacturer Recommended Substitutes (Conditional Compatibility): Parts from alternative manufacturers (Rohm Semiconductor, STMicroelectronics) that maintain core memory specifications but may differ in voltage supply minimum (1.6V vs 1.7V), temperature range extensions (up to 105°C or 125°C), clock frequency enhancements (1 MHz vs 400 kHz), or package variants (8-VSSOP, 8-TSSOP). These require design verification for specific application requirements.

Key Parameters for Substitution:

Memory Size: 2Kbit (non-negotiable)
Memory Organization: 256 x 8 (non-negotiable)
Memory Interface: I2C (non-negotiable)
Clock Frequency: 400 kHz minimum (higher frequencies acceptable)
Voltage Supply: Minimum 1.7V (lower minimums acceptable with verification)
Operating Temperature: -40°C to 85°C minimum range (extended ranges acceptable)
Package: 8-MSOP or compatible 8-pin surface mount variants

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Voltage Supply	Operating Temp	Package	Product Status	Inventory
34AA02-I/MS	Microchip Technology	2Kbit	400 kHz	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	907 Pcs
24AA02-I/MS	Microchip Technology	2Kbit	400 kHz	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	1620 Pcs
24AA025-I/MS	Microchip Technology	2Kbit	400 kHz	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	783 Pcs
BR24A02FVM-WMTR	Rohm Semiconductor	2Kbit	400 kHz	2.5V ~ 5.5V	-40°C ~ 105°C	8-MSOP	Active	1390 Pcs
BR24G02FVJ-3AGTE2	Rohm Semiconductor	2Kbit	1 MHz	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active	1723 Pcs
BR24G02FVJ-3GTE2	Rohm Semiconductor	2Kbit	400 kHz	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Not For New Designs	2600 Pcs
BR24G02FVM-3GTTR	Rohm Semiconductor	2Kbit	400 kHz	1.6V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	2710 Pcs
BR24L02FVM-WTR	Rohm Semiconductor	2Kbit	400 kHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	2200 Pcs
BR24T02FVJ-WE2	Rohm Semiconductor	2Kbit	400 kHz	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Not For New Designs	3700 Pcs
BR34E02FVT-3E2	Rohm Semiconductor	2Kbit	400 kHz	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active	976 Pcs
M24C02-DRDW3TP/K	STMicroelectronics	2Kbit	1 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active	2628 Pcs

Engineering Selection Recommendations

For Direct Replacement (No Design Changes Required): Select 24AA02-I/MS or 24AA025-I/MS from Microchip Technology. Both parts maintain identical electrical specifications, voltage supply range, operating temperature, and 8-MSOP packaging as the 34AA02-I/MS. Both are in active product status. The 24AA02-I/MS offers higher inventory availability (1620 Pcs) compared to the original part.

For Extended Temperature Range Applications: BR24A02FVM-WMTR from Rohm Semiconductor extends operating temperature to 105°C while maintaining 400 kHz clock frequency and 8-MSOP packaging. Note that minimum supply voltage is 2.5V (versus 1.7V for the original part). This part includes automotive qualification (AEC-Q100) and is suitable for industrial temperature environments.

For Higher Clock Frequency Requirements: BR24G02FVJ-3AGTE2 or M24C02-DRDW3TP/K support 1 MHz clock frequency. The Rohm part operates at 1.6V minimum supply voltage with standard temperature range. The STMicroelectronics part extends to 125°C operating temperature with automotive qualification (AEC-Q100) and 1.8V minimum supply voltage. Both require package transition from 8-MSOP to 8-TSSOP.

For New Designs: Avoid BR24G02FVJ-3GTE2 and BR24T02FVJ-WE2, both marked as "Not For New Designs" despite high inventory availability.

For Automotive Applications: M24C02-DRDW3TP/K from STMicroelectronics is AEC-Q100 qualified with extended temperature range (-40°C to 125°C) and 1 MHz operation. BR24A02FVM-WMTR from Rohm Semiconductor is also automotive qualified with extended temperature to 105°C.

Frequently Asked Questions (FAQ)

Q: Can I use 24AA02-I/MS as a direct replacement for 34AA02-I/MS? A: Yes. Both parts are manufactured by Microchip Technology with identical memory capacity (2Kbit), interface (I2C), clock frequency (400 kHz), voltage supply range (1.7V ~ 5.5V), operating temperature (-40°C ~ 85°C), and 8-MSOP packaging. No design changes are required.

Q: What is the difference between 8-MSOP and 8-TSSOP packages? A: Both are 8-pin surface mount packages with different physical dimensions. 8-MSOP has 0.118" width (3.00mm), while 8-TSSOP has 0.173" width (4.40mm). PCB layout and footprint designs differ between these packages. Verify PCB compatibility before substituting between package types.

Q: Can I use BR24G02FVJ-3AGTE2 (1 MHz) in place of 34AA02-I/MS (400 kHz)? A: Yes, from a functional standpoint. The higher clock frequency is backward compatible with 400 kHz I2C bus operation. However, the package changes from 8-MSOP to 8-TSSOP, requiring PCB layout verification. Minimum supply voltage is 1.6V (acceptable for 1.7V designs).

Q: What does "Not For New Designs" mean for BR24G02FVJ-3GTE2 and BR24T02FVJ-WE2? A: These parts are in production but Rohm Semiconductor recommends against using them in new product designs. They remain available for legacy system support and maintenance. For new designs, select active status parts such as BR24G02FVM-3GTTR or BR34E02FVT-3E2.

Q: Is BR24A02FVM-WMTR suitable for my application requiring 1.7V minimum supply voltage? A: No. BR24A02FVM-WMTR requires minimum 2.5V supply voltage, which exceeds the 1.7V minimum of the original 34AA02-I/MS. This part is suitable only for applications with 2.5V or higher supply voltage. For 1.7V minimum requirements, use 24AA02-I/MS, 24AA025-I/MS, or BR34E02FVT-3E2.

Q: Which substitute part offers the best inventory availability? A: BR24T02FVJ-WE2 has the highest inventory (3700 Pcs), followed by BR24G02FVJ-3GTE2 (2600 Pcs) and BR24G02FVM-3GTTR (2710 Pcs). However, BR24T02FVJ-WE2 and BR24G02FVJ-3GTE2 are marked "Not For New Designs." For active status parts with high availability, BR24G02FVM-3GTTR (2710 Pcs) is recommended.

Q: What are the compliance and qualification differences between substitute parts? A: M24C02-DRDW3TP/K and BR24A02FVM-WMTR are AEC-Q100 automotive qualified. All parts listed are ROHS3 compliant and REACH unaffected. Automotive qualification is relevant only for applications requiring automotive-grade components. Standard industrial applications do not require this qualification.

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