AT24C02C-SSHM-T Equivalent & Substitute Parts

Part Overview

The AT24C02C-SSHM-T is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 1 MHz with 550 ns access time. The device operates across a supply voltage range of 1.7V to 5.5V and temperature range of -40°C to 85°C, packaged in 8-SOIC surface mount configuration. This part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified based on matching memory capacity, interface protocol, package type, and electrical operating parameters to ensure functional compatibility in system designs.

Key Parameters

Parameter	Value
Memory Size	2Kbit
Memory Organization	256 x 8
Memory Interface	I2C
Clock Frequency	1 MHz
Access Time	550 ns
Write Cycle Time	5 ms
Voltage Supply Range	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the AT24C02C-SSHM-T are classified into three categories based on electrical and mechanical compatibility:

Direct Substitutes (Identical Electrical Parameters): Parts matching all key electrical specifications including 2Kbit capacity, I2C interface, 1 MHz clock frequency, 550 ns access time, 1.7V–5.5V supply range, and 8-SOIC package. These parts are pin-compatible and functionally equivalent.

Manufacturer Recommended Substitutes (Reduced Clock Frequency): Parts with 2Kbit capacity, I2C interface, 400 kHz clock frequency, 900 ns access time, 1.7V–5.5V supply range, and 8-SOIC package. These operate at lower clock speeds but maintain full memory capacity and interface compatibility.

Parametric Equivalents (Microchip Variants): Parts from Microchip Technology with identical 2Kbit capacity, I2C interface, 1 MHz clock frequency, 550 ns access time, and 8-SOIC package, with variations in supply voltage range or moisture sensitivity level.

Cross-Manufacturer Substitutes (Rohm Semiconductor): Parts from alternative manufacturers with 2Kbit capacity, I2C interface, 400 kHz clock frequency, and compatible package dimensions, offering functional equivalence with different thermal and packaging characteristics.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Package	Inventory	Product Status
AT24C02C-SSHM-T	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	8-SOIC	200300 Pcs	Active
AT24CS02-SSHM-T	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	8-SOIC	3850 Pcs	Active
24AA024T-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	8-SOIC	3700 Pcs	Active
24AA025T-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	8-SOIC	4138 Pcs	Active
24AA02T-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	8-SOIC	6640 Pcs	Active
AT24C02D-SSHM-T	Microchip Technology	2Kbit	1 MHz	450 ns	1.7V ~ 3.6V	8-SOIC	42300 Pcs	Active
AT34C02D-SSHM-T	Microchip Technology	2Kbit	1 MHz	Not Specified	1.7V ~ 5.5V	8-SOIC	7208 Pcs	Active
AT24HC02C-SSHM-T	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	8-SOIC	1488 Pcs	Active
AT24MAC402-SSHM-T	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	8-SOIC	17100 Pcs	Active
AT24MAC602-SSHM-T	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	8-SOIC	5511 Pcs	Active
BR24G02F-3GTE2	Rohm Semiconductor	2Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	8-SOP	2880 Pcs	Active

Engineering Selection Recommendations

For Direct Replacement (Pin-Compatible, Identical Performance): Select AT24CS02-SSHM-T, AT24HC02C-SSHM-T, AT24MAC402-SSHM-T, or AT24MAC602-SSHM-T. All maintain 1 MHz clock frequency, 550 ns access time, and 1.7V–5.5V supply range in 8-SOIC package. AT24MAC402-SSHM-T offers highest inventory availability at 17100 units with verified DiGi-Electronics programmability and MSL 1 rating.

For Lower Clock Speed Applications (400 kHz Operation): Select 24AA024T-I/SN, 24AA025T-I/SN, or 24AA02T-I/SN. These parts reduce clock frequency to 400 kHz with corresponding 900 ns access time. 24AA02T-I/SN provides highest inventory at 6640 units with verified programmability and MSL 1 rating.

For Reduced Supply Voltage Range (1.7V–3.6V): Select AT24C02D-SSHM-T. This part maintains 1 MHz clock frequency and 450 ns access time but operates within narrower supply voltage range. Highest inventory availability at 42300 units with verified programmability.

For Cross-Manufacturer Compatibility: Select BR24G02F-3GTE2 from Rohm Semiconductor. This part operates at 400 kHz with 8-SOP package (0.173" width versus 0.154" for SOIC) and 1.6V–5.5V supply range. Suitable for designs requiring alternative manufacturer sourcing.

All recommended substitutes maintain ROHS3 compliance and Active product status.

Frequently Asked Questions (FAQ)

Q: Can AT24C02C-SSHM-T be replaced with 24AA02T-I/SN? A: Yes, with operational considerations. Both parts share 2Kbit capacity, I2C interface, 1.7V–5.5V supply range, and 8-SOIC package. The 24AA02T-I/SN operates at 400 kHz clock frequency versus 1 MHz for AT24C02C-SSHM-T, resulting in 900 ns access time versus 550 ns. This substitution is valid for applications not requiring 1 MHz I2C bus speed.

Q: What is the difference between AT24C02D-SSHM-T and AT24C02C-SSHM-T? A: Both parts operate at 1 MHz with 8-SOIC package and ROHS3 compliance. AT24C02D-SSHM-T has reduced supply voltage range (1.7V–3.6V versus 1.7V–5.5V) and faster access time (450 ns versus 550 ns). AT24C02D-SSHM-T is suitable for low-voltage applications with higher performance requirements.

Q: Are Microchip AT24 series parts interchangeable with Rohm BR24 series? A: Functional compatibility exists for 2Kbit EEPROM applications with I2C interface. BR24G02F-3GTE2 operates at 400 kHz versus 1 MHz for AT24C02C-SSHM-T. Package dimensions differ slightly (8-SOP 0.173" width versus 8-SOIC 0.154" width), requiring PCB layout verification. Supply voltage range differs (1.6V–5.5V for BR24G02F-3GTE2).

Q: What does MSL rating indicate for EEPROM selection? A: Moisture Sensitivity Level (MSL) indicates moisture exposure limits during storage and handling. MSL 1 (Unlimited) allows indefinite storage without desiccant. MSL 3 (168 Hours) requires desiccant storage and limits exposure to 168 hours at specified humidity before reflow soldering. AT24MAC402-SSHM-T and AT24MAC602-SSHM-T offer MSL 1 rating for less stringent handling requirements.

Q: Can parts with different clock frequencies operate on the same I2C bus? A: Yes. I2C bus speed is determined by the master controller, not individual slave devices. Parts rated for 400 kHz and 1 MHz can coexist on the same bus. The bus operates at the lowest speed supported by all connected devices. Substituting 1 MHz parts with 400 kHz parts does not affect system functionality but may reduce data transfer speed if the bus is configured for 1 MHz operation.

Q: What inventory considerations apply to substitute selection? A: AT24MAC402-SSHM-T provides highest availability at 17100 units with verified programmability and MSL 1 rating. AT24C02D-SSHM-T offers 42300 units for high-volume applications. 24AA02T-I/SN provides 6640 units for 400 kHz applications. BR24G02F-3GTE2 offers 2880 units for cross-manufacturer sourcing.

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