AT24C02N-10SC-2.5 Equivalent & Substitute Parts

Part Overview

The AT24C02N-10SC-2.5 is a 2Kbit EEPROM memory IC with I2C interface operating at 400 kHz, manufactured by Microchip Technology in 8-SOIC surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The device provides non-volatile memory storage with 256 x 8 organization and 900 ns access time, suitable for applications requiring small-capacity serial EEPROM 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	2.5V ~ 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

Substitute parts for the AT24C02N-10SC-2.5 are selected based on strict electrical and mechanical parameter matching. The critical parameters determining substitutability are:

Memory capacity: 2Kbit with 256 x 8 organization
Interface protocol: I2C at 400 kHz
Access time: 900 ns
Write cycle time: 5ms
Package type: 8-SOIC surface mount
Supply voltage compatibility: minimum 2.5V operation

Substitutes are grouped into four categories based on their relationship to the original part:

Direct Manufacturer Equivalents maintain identical electrical specifications from the same manufacturer (Microchip Technology).

MFR Recommended Substitutes are manufacturer-endorsed alternatives with enhanced specifications such as extended temperature ranges or improved compliance status.

Parametric Equivalents match all critical electrical parameters but may originate from different manufacturers or have minor specification variations.

Cross-Manufacturer Alternatives provide functional equivalence from alternative suppliers such as Rohm Semiconductor and onsemi, with verified I2C EEPROM 2Kbit functionality.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Interface	Clock Freq	Access Time	Voltage Supply	Temp Range	Package	Product Status	RoHS Status
AT24C02N-10SC-2.5	Microchip	2Kbit	I2C	400 kHz	900 ns	2.5V ~ 5.5V	0°C ~ 70°C	8-SOIC	Obsolete	Non-compliant
24AA02/SN	Microchip	2Kbit	I2C	400 kHz	900 ns	1.7V ~ 5.5V	0°C ~ 70°C	8-SOIC	Active	ROHS3 Compliant
24LC025-E/SN	Microchip	2Kbit	I2C	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC	Active	ROHS3 Compliant
24LC02B-I/SN	Microchip	2Kbit	I2C	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active	ROHS3 Compliant
24LC024/SN	Microchip	2Kbit	I2C	400 kHz	900 ns	2.5V ~ 5.5V	0°C ~ 70°C	8-SOIC	Active	ROHS3 Compliant
24LC025/SN	Microchip	2Kbit	I2C	400 kHz	900 ns	2.5V ~ 5.5V	0°C ~ 70°C	8-SOIC	Active	ROHS3 Compliant
24LC02B/SN	Microchip	2Kbit	I2C	400 kHz	900 ns	2.5V ~ 5.5V	0°C ~ 70°C	8-SOIC	Active	ROHS3 Compliant
BR24C02-MN6TP	Rohm	2Kbit	I2C	400 kHz	—	4.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Not For New Designs	ROHS3 Compliant
BR24G02F-3GTE2	Rohm	2Kbit	I2C	400 kHz	—	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active	ROHS3 Compliant
BR24L02FJ-WE2	Rohm	2Kbit	I2C	400 kHz	—	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active	ROHS3 Compliant
CAV24C02WE-GT3	onsemi	2Kbit	I2C	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC	Active	ROHS3 Compliant

Engineering Selection Recommendations

For RoHS Compliance Requirements: Select from active Microchip parts (24AA02/SN, 24LC025-E/SN, 24LC02B-I/SN, 24LC024/SN, 24LC025/SN, 24LC02B/SN) or cross-manufacturer alternatives (BR24C02-MN6TP, BR24G02F-3GTE2, BR24L02FJ-WE2, CAV24C02WE-GT3). All listed substitutes carry ROHS3 compliance status.

For Extended Temperature Operation: 24LC025-E/SN and CAV24C02WE-GT3 support -40°C to 125°C range. CAV24C02WE-GT3 includes AEC-Q100 automotive qualification.

For Narrow Supply Voltage Margin: BR24C02-MN6TP operates within 4.5V to 5.5V only and is marked "Not For New Designs." Avoid for new applications.

For Low-Voltage Applications: BR24G02F-3GTE2 (1.6V minimum) and BR24L02FJ-WE2 (1.8V minimum) support lower supply voltages than the original part.

For Direct Pin Compatibility: All listed parts maintain 8-SOIC package format with 0.154" width (3.90mm), ensuring mechanical interchangeability on standard PCB layouts.

For Production Continuity: 24LC02B-I/SN offers the highest inventory (77,890 pcs) and verified DiGi-Electronics programmability status.

Frequently Asked Questions (FAQ)

Q: Can I use 24AA02/SN as a direct replacement for AT24C02N-10SC-2.5?

A: Yes, 24AA02/SN is electrically compatible. It matches all critical parameters: 2Kbit capacity, I2C 400 kHz interface, 900 ns access time, and 8-SOIC package. The 24AA02/SN has a lower minimum supply voltage (1.7V vs 2.5V) and is ROHS3 compliant, making it suitable for new designs.

Q: What is the difference between 24LC025-E/SN and 24LC02B-I/SN?

A: Both are 2Kbit I2C EEPROMs in 8-SOIC packages with identical electrical performance. The primary differences are operating temperature range (24LC025-E/SN: -40°C to 125°C; 24LC02B-I/SN: -40°C to 85°C) and inventory availability (24LC02B-I/SN has significantly higher stock).

Q: Are Rohm BR24 series parts compatible with Microchip AT24C02 designs?

A: Yes, BR24C02-MN6TP, BR24G02F-3GTE2, and BR24L02FJ-WE2 are functionally equivalent. All maintain 2Kbit capacity, I2C 400 kHz interface, and 8-SOIC packaging. Verify supply voltage requirements: BR24C02-MN6TP requires 4.5V minimum, while BR24G02F-3GTE2 and BR24L02FJ-WE2 support lower voltages.

Q: Is CAV24C02WE-GT3 suitable for automotive applications?

A: Yes, CAV24C02WE-GT3 carries AEC-Q100 automotive qualification and supports -40°C to 125°C operating range. It is the only part in this list with explicit automotive grade designation.

Q: Why is BR24C02-MN6TP marked "Not For New Designs"?

A: This designation indicates the part is in mature or declining production phase. While functionally equivalent and currently in stock, Rohm recommends using alternative parts for new designs. BR24G02F-3GTE2 or BR24L02FJ-WE2 are preferred Rohm alternatives.

Q: Do all substitute parts have identical package dimensions?

A: All listed parts use 8-SOIC packaging with 0.154" width (3.90mm), except BR24G02F-3GTE2 which uses 8-SOIC with 0.173" width (4.40mm). Verify PCB footprint compatibility before selection.

Q: What is the significance of "DiGi-Electronics Programmable" status?

A: This indicates whether the part has been verified for programming compatibility with DiGi-Electronics equipment. 24LC02B-I/SN and 24LC024/SN carry verified status, while others are not verified or unspecified. This affects production programming workflows.

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