Equivalent & Substitute Parts for 24LC01BH-I/MS

Part Overview

The 24LC01BH-I/MS is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 900 ns access time. This device is designed for non-volatile data storage applications requiring low-power, serial communication in compact surface-mount packages. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when design requirements change, inventory constraints occur, or when alternative manufacturers offer compatible solutions meeting the same electrical and mechanical specifications.

Key Parameters

Parameter	Value
Memory Size	1Kbit
Memory Organization	128 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-MSOP
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 24LC01BH-I/MS are classified based on strict adherence to the following critical parameters:

Primary Substitution Criteria:

Memory Size: 1Kbit (128 x 8 organization)
Memory Interface: I2C protocol
Memory Type: Non-Volatile EEPROM
Package Type: 8-MSOP or 8-TSSOP (mechanically compatible)
Operating Temperature Range: -40°C ~ 85°C
Write Cycle Time: 5ms

Secondary Compatibility Parameters:

Clock Frequency: 400 kHz (primary) or 1 MHz (higher performance variant)
Access Time: 900 ns (primary) or faster
Voltage Supply Range: Must encompass 2.5V ~ 5.5V minimum
RoHS3 Compliance: Required for new designs
MSL Rating: 1 or 2 acceptable

Substitutes are grouped into two categories: direct equivalents (matching all primary parameters) and parametric equivalents (matching core functionality with enhanced performance specifications).

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Package	Product Status	MSL Rating
24LC01BH-I/MS	Microchip Technology	1Kbit	400 kHz	900 ns	2.5V ~ 5.5V	8-MSOP	Active	1
24AA01-I/MS	Microchip Technology	1Kbit	400 kHz	3500 ns	1.7V ~ 5.5V	8-MSOP	Active	2
24LC014H-I/MS	Microchip Technology	1Kbit	1 MHz	400 ns	2.5V ~ 5.5V	8-MSOP	Active	2
24LC01B-I/MS	Microchip Technology	1Kbit	400 kHz	4.6 µs	2.5V ~ 5.5V	8-MSOP	Active	1
24LC014-I/MS	Microchip Technology	1Kbit	400 kHz	900 ns	2.5V ~ 5.5V	8-MSOP	Active	1
BR24G01FVJ-3GTE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	8-TSSOP	Not For New Designs	1
BR24G01FVM-3AGTTR	Rohm Semiconductor	1Kbit	1 MHz	Not Specified	1.6V ~ 5.5V	8-MSOP	Active	1

Engineering Selection Recommendations

Direct Equivalents (Microchip Technology):

The 24LC014-I/MS is a parametric equivalent offering identical electrical performance to the 24LC01BH-I/MS with matching 400 kHz clock frequency, 900 ns access time, and 2.5V ~ 5.5V supply range. Both devices maintain MSL rating 1 and RoHS3 compliance. This part is suitable for direct substitution in active production designs.

The 24LC01B-I/MS is functionally compatible with verified programmability status and MSL rating 1. It operates at 400 kHz with extended access time (4.6 µs) and identical supply voltage range. This part is appropriate for applications where access time is not performance-critical.

Extended Voltage Range Alternative:

The 24AA01-I/MS extends the lower voltage supply limit to 1.7V, enabling operation in ultra-low-power applications. It maintains 400 kHz operation and 1Kbit capacity but features MSL rating 2 (1 Year) and slower access time (3500 ns). This part is suitable for battery-powered or energy-harvesting designs.

Higher Performance Variants:

The 24LC014H-I/MS and BR24G01FVM-3AGTTR both operate at 1 MHz clock frequency with faster access times (400 ns), providing enhanced performance for time-sensitive applications. Both maintain 1Kbit capacity and RoHS3 compliance. The Microchip part (24LC014H-I/MS) is active production status; the Rohm part (BR24G01FVM-3AGTTR) is also active but from an alternative manufacturer.

Legacy Consideration:

The BR24G01FVJ-3GTE2 from Rohm Semiconductor is marked "Not For New Designs" and should be avoided in new product development. It is listed only for reference in legacy system maintenance scenarios.

Frequently Asked Questions (FAQ)

Q: Can I substitute 24LC01BH-I/MS with 24LC014-I/MS?

A: Yes. Both parts share identical electrical specifications: 1Kbit capacity, 128 x 8 organization, I2C interface, 400 kHz clock frequency, 900 ns access time, 2.5V ~ 5.5V supply range, 8-MSOP package, and RoHS3 compliance. They are parametric equivalents suitable for direct substitution.

Q: What is the difference between 24LC01BH-I/MS and 24LC014H-I/MS?

A: The primary difference is clock frequency and access time. The 24LC014H-I/MS operates at 1 MHz with 400 ns access time, compared to 400 kHz and 900 ns for the 24LC01BH-I/MS. Both maintain identical 1Kbit capacity, I2C interface, and 8-MSOP packaging. The 24LC014H-I/MS is suitable for applications requiring faster data access.

Q: Is the BR24G01FVJ-3GTE2 suitable for new designs?

A: No. This part is marked "Not For New Designs" by the manufacturer. It should only be used for legacy system maintenance or repair. For new product development, select from active production alternatives such as 24LC014-I/MS or 24LC014H-I/MS.

Q: Can I use 24AA01-I/MS in a 2.5V application?

A: Yes. The 24AA01-I/MS supply voltage range is 1.7V ~ 5.5V, which encompasses 2.5V operation. However, it features MSL rating 2 (1 Year) compared to MSL rating 1 (Unlimited) for the 24LC01BH-I/MS, and slower access time (3500 ns vs. 900 ns). Verify that slower access time is acceptable for your application timing requirements.

Q: Are 8-MSOP and 8-TSSOP packages mechanically interchangeable?

A: Both packages are 8-pin surface-mount configurations with similar footprints (0.118" width, 3.00mm). However, verify PCB layout compatibility before substitution. The BR24G01FVJ-3GTE2 uses 8-TSSOP-BJ variant; confirm pad spacing and solder reflow profile compatibility with your manufacturing process.

Q: What does MSL rating mean for component selection?

A: MSL (Moisture Sensitivity Level) indicates the maximum time a component can be stored in ambient conditions before requiring baking. MSL 1 (Unlimited) allows indefinite storage without baking. MSL 2 (1 Year) requires baking if stored longer than one year. For high-volume manufacturing with extended inventory, MSL 1 rated parts reduce process complexity.

Q: Can I substitute based on clock frequency alone?

A: No. Clock frequency is one parameter among many. All substitutes must maintain 1Kbit capacity, I2C interface, 128 x 8 organization, 8-pin surface-mount package, and compatible voltage supply range. Verify access time, write cycle time, operating temperature range, and compliance certifications before selection.

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