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24LC128T-I/MF EEPROM Memory IC Equivalent & Substitute Parts
Part Overview
The 24LC128T-I/MF is a 128Kbit I2C EEPROM memory integrated circuit manufactured by Microchip Technology. This non-volatile memory device operates at 400 kHz clock frequency with 900 ns access time and supports supply voltages from 2.5V to 5.5V. The component is housed in an 8-VDFN Exposed Pad surface mount package and maintains active product status with full RoHS3 compliance. Substitute parts are identified when electrical specifications, memory organization, interface protocol, and package configuration remain identical across manufacturing variants and packaging options.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Memory Size | 128Kbit |
| Memory Organization | 16K 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 | -40°C ~ 85°C |
| Package Type | 8-VDFN Exposed Pad |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
The 24LC128-I/MF qualifies as a direct substitute for the 24LC128T-I/MF based on identical electrical and mechanical parameters. Both parts share the same base product number (24LC128), memory capacity (128Kbit), interface protocol (I2C), clock frequency (400 kHz), access time (900 ns), supply voltage range (2.5V ~ 5.5V), operating temperature range (-40°C ~ 85°C), and package configuration (8-VDFN Exposed Pad). The substitution is valid across all specified electrical parameters and physical form factors. The primary distinction between these parts is packaging format: the main part (24LC128T-I/MF) is supplied in Tape & Reel configuration, while the substitute (24LC128-I/MF) is supplied in Tube packaging. Both maintain identical component-level functionality and are manufactured by Microchip Technology with active product status and full RoHS3 compliance.
Parameter Comparison
| Parameter | 24LC128T-I/MF (Main) | 24LC128-I/MF (Substitute) |
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology |
| Memory Size | 128Kbit | 128Kbit |
| Memory Organization | 16K x 8 | 16K x 8 |
| Memory Interface | I2C | I2C |
| Clock Frequency | 400 kHz | 400 kHz |
| Access Time | 900 ns | 900 ns |
| Write Cycle Time | 5ms | 5ms |
| Voltage Supply | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | 8-VDFN Exposed Pad | 8-VDFN Exposed Pad |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging Format | Tape & Reel (TR) | Tube |
| Product Status | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
Both the 24LC128T-I/MF and 24LC128-I/MF maintain active product status with identical electrical performance characteristics and full regulatory compliance. Selection between these parts is determined by packaging and supply chain requirements rather than functional capability. The Tape & Reel format (24LC128T-I/MF) is optimized for automated assembly processes and high-volume production environments. The Tube packaging format (24LC128-I/MF) is suitable for lower-volume applications, manual assembly, or inventory management scenarios where individual component handling is required. Both parts carry ROHS3 compliance, REACH Unaffected status, and MSL Level 1 rating, confirming suitability for standard manufacturing and storage conditions without moisture sensitivity constraints.
Frequently Asked Questions (FAQ)
Q: Can 24LC128-I/MF replace 24LC128T-I/MF in production assembly? A: Yes. Both parts are functionally identical with matching electrical specifications, memory organization, interface protocol, and package configuration. The difference is packaging format only. Tape & Reel format is standard for automated pick-and-place assembly, while Tube format requires manual handling or compatible tube feeders.
Q: Are there any electrical performance differences between these parts? A: No. Both parts share identical memory capacity (128Kbit), I2C interface, 400 kHz clock frequency, 900 ns access time, 5ms write cycle time, 2.5V to 5.5V supply voltage range, and -40°C to 85°C operating temperature range.
Q: Do both parts meet the same compliance standards? A: Yes. Both 24LC128T-I/MF and 24LC128-I/MF are ROHS3 compliant, REACH Unaffected, and carry MSL Level 1 rating with unlimited moisture sensitivity protection.
Q: What is the primary reason to choose one packaging format over the other? A: Tape & Reel (24LC128T-I/MF) is preferred for automated assembly lines with high-speed pick-and-place equipment. Tube packaging (24LC128-I/MF) is selected for manual assembly, prototyping, or when existing inventory management systems are optimized for tube-based component handling.
Q: Are both parts currently in active production? A: Yes. Both the 24LC128T-I/MF and 24LC128-I/MF maintain active product status from Microchip Technology with confirmed inventory availability.
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