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24FC04HT-I/ST EEPROM Memory IC Equivalent & Substitute Parts
Part Overview
The 24FC04HT-I/ST is a 4Kbit EEPROM memory integrated circuit manufactured by Microchip Technology. This non-volatile memory device operates via I2C interface at 1 MHz clock frequency and is housed in an 8-TSSOP surface mount package. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity level rating. Substitute parts are identified when identical electrical specifications and mechanical compatibility are maintained across the product line.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Memory Size | 4Kbit |
| Memory Organization | 256 x 8 x 2 |
| Memory Interface | I2C |
| Clock Frequency | 1 MHz |
| Access Time | 450 ns |
| Write Cycle Time | 5ms |
| Voltage Supply Range | 1.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C |
| Package Type | 8-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
The 24FC04T-I/ST qualifies as a parametric equivalent to the 24FC04HT-I/ST based on the following substitution criteria:
All electrical parameters are identical: 4Kbit memory capacity, 256 x 8 x 2 organization, I2C interface, 1 MHz clock frequency, 450 ns access time, 5ms write cycle time, 1.7V to 5.5V supply voltage range, and -40°C to 85°C operating temperature range.
The mechanical package specification is identical: 8-TSSOP surface mount package with 0.173" width and 4.40mm dimensions.
Compliance certifications match: both parts maintain ROHS3 compliance, MSL 1 rating, REACH unaffected status, and identical ECCN and HTSUS classifications.
The only difference between these parts is the packaging format: the main part (24FC04HT-I/ST) is supplied in Tape & Reel format, while the substitute (24FC04T-I/ST) is supplied in Cut Tape format. This distinction affects procurement and handling but does not alter functional or electrical compatibility.
Parameter Comparison
| Parameter | 24FC04HT-I/ST | 24FC04T-I/ST | Match |
|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Yes |
| Memory Size | 4Kbit | 4Kbit | Yes |
| Memory Organization | 256 x 8 x 2 | 256 x 8 x 2 | Yes |
| Memory Interface | I2C | I2C | Yes |
| Clock Frequency | 1 MHz | 1 MHz | Yes |
| Access Time | 450 ns | 450 ns | Yes |
| Write Cycle Time | 5ms | 5ms | Yes |
| Voltage Supply Range | 1.7V ~ 5.5V | 1.7V ~ 5.5V | Yes |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | Yes |
| Package Type | 8-TSSOP | 8-TSSOP | Yes |
| Mounting Type | Surface Mount | Surface Mount | Yes |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Yes |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | Yes |
| Packaging Format | Tape & Reel (TR) | Cut Tape (CT) | Different |
| Product Status | Active | Active | Yes |
Engineering Selection Recommendations
Both the 24FC04HT-I/ST and 24FC04T-I/ST are active production parts from Microchip Technology with full RoHS3 compliance and identical electrical and mechanical specifications. Selection between these parts should be based on procurement requirements and assembly processes.
The 24FC04HT-I/ST in Tape & Reel format is suitable for high-volume automated assembly operations where tape-fed component handling is standard.
The 24FC04T-I/ST in Cut Tape format is suitable for lower-volume applications, manual assembly processes, or situations where individual component handling is required.
Both parts carry MSL 1 rating, indicating unlimited shelf life under standard storage conditions, and maintain identical REACH and ECCN classifications for regulatory compliance.
Frequently Asked Questions (FAQ)
Q: Can the 24FC04T-I/ST replace the 24FC04HT-I/ST in a circuit design?
A: Yes. Both parts are electrically and mechanically identical. The only difference is the packaging format (Cut Tape versus Tape & Reel). Circuit functionality, performance, and reliability are not affected by this distinction.
Q: What is the difference between Tape & Reel and Cut Tape packaging?
A: Tape & Reel packaging supplies components wound on continuous tape on a reel, optimized for automated pick-and-place assembly. Cut Tape packaging supplies the same components cut from tape in smaller quantities, suitable for manual assembly or lower-volume production.
Q: Are both parts RoHS compliant?
A: Yes. Both the 24FC04HT-I/ST and 24FC04T-I/ST are ROHS3 compliant and carry identical REACH unaffected status.
Q: What is the moisture sensitivity level for these parts?
A: Both parts carry MSL 1 rating, which indicates unlimited shelf life. No special moisture control measures are required during storage or handling.
Q: Can these parts be used interchangeably in existing designs?
A: Yes, from an electrical and mechanical standpoint. However, assembly process compatibility should be confirmed based on your manufacturing equipment and procedures.
Q: What is the I2C clock frequency specification?
A: Both parts operate at 1 MHz clock frequency with 450 ns access time and 5ms write cycle time.
Q: What supply voltage range do these parts support?
A: Both parts operate across a 1.7V to 5.5V supply voltage range, supporting both 3.3V and 5V logic systems.
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