Equivalent & Substitute Parts for 24LC025T/SN

Part Overview

The 24LC025T/SN is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 900 ns access time. Packaged in 8-SOIC surface mount configuration, this non-volatile memory device operates across a 2.5V to 5.5V supply range and supports industrial temperature applications from 0°C to 70°C. The part is ROHS3 compliant and currently in active production status with 972 units in stock.

Equivalent and substitute parts are necessary when the original 24LC025T/SN becomes unavailable, when alternative temperature ranges or supply voltage specifications are required, or when different packaging formats better suit manufacturing requirements. Substitute parts maintain functional compatibility through identical memory capacity, organization, interface protocol, and package footprint while potentially offering extended operating parameters or improved availability.

Key Parameters

Parameter	24LC025T/SN
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	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 24LC025T/SN is determined by strict adherence to the following electrical and mechanical parameters:

Core Compatibility Requirements:

Memory capacity: 2Kbit (256 x 8 organization)
Interface protocol: I2C
Clock frequency: 400 kHz minimum
Access time: 900 ns or faster
Write cycle time: 5ms or faster
Package: 8-SOIC with 0.154" (3.90mm) width
Mounting: Surface mount

Acceptable Parameter Variations:

Supply voltage range may extend beyond 2.5V ~ 5.5V (lower minimum or higher maximum acceptable)
Operating temperature range may extend beyond 0°C ~ 70°C (wider range acceptable)
Packaging format may differ (Tape & Reel, Cut Tape, Tube acceptable)
Moisture Sensitivity Level may vary (MSL 1, 3 acceptable)

Non-Substitutable Parameters:

Memory size, organization, and interface protocol must remain identical
Clock frequency cannot be lower than 400 kHz
Access time cannot exceed 900 ns
Package footprint and pin configuration must match 8-SOIC standard

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temperature	Package	Packaging Format	RoHS Status
24LC025T/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	0°C ~ 70°C	8-SOIC	Tape & Reel	ROHS3
24AA024T-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tape & Reel	ROHS3
24AA025T-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tape & Reel	ROHS3
24AA02T-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Cut Tape & Digi-Reel	ROHS3
24AA02T/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	0°C ~ 70°C	8-SOIC	Tape & Reel	ROHS3
24LC024HT-I/SN	Microchip Technology	2Kbit	1 MHz	400 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tape & Reel	ROHS3
24LC024T-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Cut Tape & Digi-Reel	ROHS3
24LC02B-I/SNG	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tube	ROHS3
24LC02BT-E/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC	Cut Tape & Digi-Reel	ROHS3
24LC02BT-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Cut Tape & Digi-Reel	ROHS3
24LC22A-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tube	ROHS3

Engineering Selection Recommendations

All listed substitute parts maintain ROHS3 compliance and active product status, ensuring regulatory alignment and long-term availability. Selection between equivalent parts depends on specific application requirements:

For applications requiring extended low-temperature operation: 24AA024T-I/SN, 24AA025T-I/SN, and 24AA02T-I/SN support -40°C minimum operating temperature compared to the 0°C minimum of 24LC025T/SN, with extended upper temperature limits to 85°C.

For applications requiring extended high-temperature operation: 24LC02BT-E/SN extends the upper operating temperature to 125°C while maintaining the 2.5V ~ 5.5V supply range and 400 kHz I2C operation.

For applications requiring lower supply voltage operation: 24AA024T-I/SN, 24AA025T-I/SN, and 24AA02T-I/SN support 1.7V minimum supply voltage, enabling operation in low-power applications where 24LC025T/SN's 2.5V minimum is insufficient.

For applications requiring faster I2C operation: 24LC024HT-I/SN operates at 1 MHz clock frequency with 400 ns access time, providing improved performance while maintaining 2Kbit capacity and 8-SOIC packaging.

For packaging format flexibility: Cut Tape & Digi-Reel format (24LC024T-I/SN, 24LC02BT-I/SN, 24LC02BT-E/SN, 24AA02T-I/SN) and Tube format (24LC02B-I/SNG, 24LC22A-I/SN) alternatives are available to accommodate different manufacturing and procurement workflows.

Frequently Asked Questions (FAQ)

Q: Can 24AA024T-I/SN replace 24LC025T/SN in all applications?

A: 24AA024T-I/SN is electrically compatible as a direct substitute, offering identical 2Kbit capacity, I2C interface at 400 kHz, and 8-SOIC packaging. The primary differences are extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and lower minimum supply voltage (1.7V versus 2.5V). These differences are compatible with applications designed for 24LC025T/SN.

Q: What is the difference between 24LC024HT-I/SN and 24LC025T/SN?

A: Both parts share identical 2Kbit capacity and 8-SOIC packaging. The 24LC024HT-I/SN operates at 1 MHz I2C clock frequency with 400 ns access time, compared to 24LC025T/SN's 400 kHz operation with 900 ns access time. The faster 24LC024HT-I/SN is suitable for applications requiring higher I2C bus speeds while maintaining backward compatibility with 400 kHz systems.

Q: Are packaging format differences significant for substitution?

A: Packaging format (Tape & Reel, Cut Tape & Digi-Reel, Tube) affects procurement and manufacturing processes but does not impact electrical or mechanical compatibility. All formats deliver identical 8-SOIC components with the same pin configuration and footprint. Format selection depends on production volume, handling equipment, and inventory management requirements.

Q: Can 24LC02BT-E/SN be used in applications requiring only 0°C to 70°C operation?

A: Yes. 24LC02BT-E/SN extends the upper operating temperature to 125°C and maintains all other electrical specifications compatible with 24LC025T/SN. Extended temperature capability does not restrict operation within narrower temperature ranges.

Q: What does MSL (Moisture Sensitivity Level) variation mean for substitution?

A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity restrictions and requires no special handling. MSL 3 (168 Hours) requires storage in controlled humidity environments and has a 168-hour floor life after moisture exposure. Both levels are acceptable for substitution; MSL 3 parts require appropriate moisture control during storage and assembly.

Q: Are all substitute parts verified as programmable by DiGi-Electronics?

A: Programmability verification status varies across the substitute parts list. 24AA024T-I/SN, 24AA02T-I/SN, 24LC024T-I/SN, 24LC02B-I/SNG, and 24LC02BT-I/SN are verified as programmable. 24AA025T-I/SN and 24LC022A-I/SN are not verified. Verification status does not affect functional compatibility; it indicates testing completion status within DiGi-Electronics' quality assurance process.

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