FT24C02A-UMR-B Equivalent & Substitute Parts

Part Overview

The FT24C02A-UMR-B is a 2Kbit EEPROM memory IC manufactured by Fremont Micro Devices Ltd, featuring I2C interface operation at 1 MHz with 550 ns access time. The device is packaged in 8-MSOP surface mount configuration and operates across a supply voltage range of 1.8V to 5.5V with temperature range of -40°C to 85°C. This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers for ongoing design support and production requirements.

Key Parameters

Parameter	Value
Memory Type	Non-Volatile EEPROM
Memory Size	2Kbit
Memory Organization	256 x 8
Interface	I2C
Clock Frequency	1 MHz
Access Time	550 ns
Write Cycle Time	5 ms
Supply Voltage	1.8V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package	8-MSOP / 8-TSSOP
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Primary Compatibility Criteria:

Memory capacity: 2Kbit (256 x 8 organization)
Interface protocol: I2C
Package type: 8-MSOP or 8-TSSOP (0.118", 3.00mm width)
Supply voltage range: Must encompass or be compatible with 1.8V ~ 5.5V
Operating temperature: -40°C minimum and 85°C maximum
Write cycle time: 5 ms
RoHS3 compliance

Secondary Consideration:

Clock frequency: The main part operates at 1 MHz. Substitute parts operating at 400 kHz are functionally compatible as they meet the same memory access requirements with longer access times (900 ns vs. 550 ns), which does not preclude substitution in most applications.

All listed substitute parts meet these criteria and are sourced from active manufacturers with verified product status.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Supply Voltage	Temp Range	Package	Product Status
FT24C02A-UMR-B	Fremont Micro Devices	2Kbit	1 MHz	550 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Discontinued
24AA02-I/MS	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
24AA024-I/MS	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
24AA024H-I/MS	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
24AA025-I/MS	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
24AA02H-I/MS	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
24AA52-I/MS	Microchip Technology	2Kbit	400 kHz	900 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
24LC02BT-I/MS	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
34AA02-E/MS	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 125°C	8-MSOP	Active
34AA02-I/MS	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
BR24G02FVJ-3AGTE2	Rohm Semiconductor	2Kbit	1 MHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active

Engineering Selection Recommendations

Primary Recommendation: BR24G02FVJ-3AGTE2

The BR24G02FVJ-3AGTE2 from Rohm Semiconductor is the closest functional equivalent to the FT24C02A-UMR-B. Both devices operate at 1 MHz clock frequency, matching the original part's performance specification. The Rohm device is ROHS3 compliant, carries active product status, and is available in 8-TSSOP packaging (mechanically compatible with 8-MSOP footprint). Supply voltage range of 1.6V to 5.5V encompasses the original specification. This part provides direct performance parity without performance degradation.

Secondary Recommendations: Microchip 24AA02 Series

The Microchip Technology 24AA02-I/MS, 24AA024-I/MS, 24AA024H-I/MS, 24AA025-I/MS, and 24AA02H-I/MS are functionally compatible alternatives. These parts operate at 400 kHz with 900 ns access time, representing a performance reduction from the original 1 MHz / 550 ns specification. However, all maintain identical memory capacity, I2C interface, 8-MSOP packaging, and temperature range. All are ROHS3 compliant with active product status. These options are suitable for applications where reduced clock frequency does not impact system performance.

Extended Temperature Option: 34AA02-E/MS

The 34AA02-E/MS from Microchip Technology extends the operating temperature range to -40°C to 125°C, providing enhanced thermal capability for high-temperature applications. This part maintains 2Kbit capacity, I2C interface, and 8-MSOP packaging with ROHS3 compliance and active status.

Voltage-Constrained Applications: 24LC02BT-I/MS

The 24LC02BT-I/MS operates with minimum supply voltage of 2.5V, making it suitable only for applications where the lower voltage range (1.8V to 2.5V) is not required. This part is available in Cut Tape and Digi-Reel packaging formats.

Frequently Asked Questions (FAQ)

Q: Can I directly replace FT24C02A-UMR-B with a 400 kHz Microchip part?

A: Yes. The 400 kHz Microchip devices (24AA02 series) are functionally compatible. The reduced clock frequency results in longer access time (900 ns vs. 550 ns), but both meet the same 5 ms write cycle time specification. Substitution is valid for applications where this performance difference does not create timing constraints.

Q: What is the difference between 24AA02-I/MS and 24AA024-I/MS?

A: Both parts are electrically identical 2Kbit I2C EEPROM devices with 400 kHz operation, 256 x 8 organization, and 8-MSOP packaging. The part number suffix indicates internal device variant designations from Microchip Technology. Functional substitution between these parts is direct.

Q: Is the 8-TSSOP package of BR24G02FVJ-3AGTE2 compatible with 8-MSOP footprints?

A: Yes. Both 8-TSSOP and 8-MSOP packages share the same 0.118" (3.00mm) width and pin pitch specifications, making them mechanically and electrically interchangeable on standard PCB layouts.

Q: Why does 34AA02-E/MS have a higher temperature range?

A: The 34AA02-E/MS is rated to -40°C to 125°C, compared to -40°C to 85°C for standard variants. This extended range is achieved through enhanced device design and qualification. Use this part only when the extended temperature capability is required, as it may carry different pricing or lead time characteristics.

Q: Can I use 24LC02BT-I/MS in a 1.8V application?

A: No. The 24LC02BT-I/MS minimum supply voltage is 2.5V. For applications requiring operation below 2.5V, use 24AA02-I/MS, 24AA024-I/MS, 24AA024H-I/MS, 24AA025-I/MS, 24AA02H-I/MS, 34AA02-E/MS, or 34AA02-I/MS, all of which support 1.7V minimum supply voltage.

Q: Which substitute part has the fastest access time?

A: The BR24G02FVJ-3AGTE2 operates at 1 MHz matching the original FT24C02A-UMR-B specification. All Microchip 24AA02 and 34AA02 series parts operate at 400 kHz with 900 ns access time, representing reduced performance compared to the original part.

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