24FC04H-E/SN EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24FC04H-E/SN is a 4Kbit EEPROM memory integrated circuit manufactured by Microchip Technology, designed for non-volatile data storage applications requiring I2C serial interface communication. This device operates at 1 MHz clock frequency with 450 ns access time, supporting supply voltages from 1.7V to 5.5V across industrial temperature ranges. The component is actively produced and widely deployed in embedded systems, IoT devices, and industrial control applications where persistent memory storage is essential. Equivalent and substitute parts are identified based on matching electrical specifications, memory organization, interface protocol, and physical packaging to ensure direct functional replacement without circuit redesign.

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	5 ms
Voltage Supply Range	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
Package Type	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitute parts for the 24FC04H-E/SN are identified through strict parametric matching across the following critical criteria:

Memory Capacity & Organization: Substitute parts must provide identical 4Kbit capacity with 256 x 8 x 2 memory organization to ensure software compatibility and address mapping equivalence.

Interface Protocol: I2C serial interface is mandatory. All substitute parts must support identical I2C communication protocol and clock frequency specifications (1 MHz) to maintain system-level compatibility without firmware modification.

Electrical Characteristics: Supply voltage range (1.7V ~ 5.5V), access time (450 ns), and write cycle time (5 ms) must match exactly to ensure timing-critical operations function identically within the host system.

Physical Package: 8-SOIC surface mount package with 0.154" width (3.90mm) is required for PCB layout compatibility. Pin count and pitch must remain unchanged.

Environmental & Compliance: Operating temperature range (-40°C ~ 125°C), RoHS3 compliance, and MSL rating (3, 168 Hours) must be maintained to satisfy manufacturing and deployment requirements.

Parameter Comparison

Parameter	24FC04H-E/SN (Main Part)	24FC04-E/SN (Substitute)
Manufacturer	Microchip Technology	Microchip Technology
Memory Size	4Kbit	4Kbit
Memory Organization	256 x 8 x 2	256 x 8 x 2
Memory Interface	I2C	I2C
Clock Frequency	1 MHz	1 MHz
Access Time	450 ns	450 ns
Write Cycle Time	5 ms	5 ms
Voltage Supply Range	1.7V ~ 5.5V	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C
Package Type	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount
Product Status	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

The 24FC04-E/SN qualifies as a direct parametric equivalent to the 24FC04H-E/SN based on complete electrical and mechanical specification alignment. Both parts are manufactured by Microchip Technology, maintain active product status, and carry identical RoHS3 and REACH compliance certifications. The substitute part demonstrates equivalent MSL rating (3, 168 Hours), ensuring compatibility with standard surface mount assembly processes and storage requirements.

Selection between these parts may be determined by inventory availability and lead time considerations. The 24FC04-E/SN currently maintains higher inventory levels (1861 Pcs) compared to the main part (972 Pcs), making it suitable for applications where supply chain continuity is a priority. Both parts are suitable for deployment across the specified operating temperature range (-40°C ~ 125°C) and voltage supply envelope (1.7V ~ 5.5V).

Frequently Asked Questions (FAQ)

Q: Can the 24FC04-E/SN be used as a direct replacement for the 24FC04H-E/SN without circuit modification?

A: Yes. The 24FC04-E/SN is a parametric equivalent with identical memory capacity, I2C interface, electrical characteristics, and 8-SOIC package specifications. No circuit redesign or firmware modification is required.

Q: Are there differences in I2C protocol compatibility between these parts?

A: No. Both parts implement identical I2C serial interface at 1 MHz clock frequency with matching access time (450 ns) and write cycle time (5 ms). I2C communication protocols and timing requirements are fully compatible.

Q: What is the significance of the different part number suffixes (H vs. standard)?

A: The parametric specifications provided indicate no functional differences between the 24FC04H-E/SN and 24FC04-E/SN variants. Both parts meet identical electrical, thermal, and compliance requirements for this application category.

Q: Are PCB layout modifications necessary when substituting these parts?

A: No. Both parts use identical 8-SOIC surface mount packaging with 0.154" width (3.90mm). Pin count, pitch, and footprint are unchanged, allowing direct PCB placement without layout revision.

Q: Do these parts have different moisture sensitivity or storage requirements?

A: No. Both parts carry identical MSL rating of 3 (168 Hours), requiring equivalent moisture control and storage conditions during manufacturing and assembly processes.

Q: Can these parts be used interchangeably in high-temperature industrial applications?

A: Yes. Both parts support the full operating temperature range of -40°C ~ 125°C and maintain RoHS3 compliance across this range, making them suitable for industrial control and embedded system deployments.

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