BA2903FV-E2 Equivalent & Substitute Parts

Part Overview

The BA2903FV-E2 is a dual general-purpose comparator manufactured by Rohm Semiconductor in an 8-SSOP surface-mount package. This device operates across a wide supply voltage range of 2V to 36V (single supply) or ±1V to ±18V (dual supply), with open-collector output configuration suitable for logic-level interfacing. The part is currently active in production with 6050 units in stock inventory.

Equivalent and substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging or qualification grades are required for specific applications, or when design flexibility demands parts from different manufacturers with identical electrical performance characteristics.

Key Parameters

Parameter	Value
Number of Elements	2
Output Type	Open-Collector
Voltage - Supply, Single/Dual (±)	2V ~ 36V, ±1V ~ 18V
Voltage - Input Offset (Max)	7mV @ 5V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	16mA @ 5V
Current - Quiescent (Max)	1mA
Operating Temperature	-40°C ~ 125°C
Package / Case	8-LSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the BA2903FV-E2 are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalent (Same Manufacturer, Same Package): Parts that maintain identical electrical specifications and physical packaging. These substitutes are interchangeable at the PCB level without design modification.

Direct Equivalents (Different Manufacturers, Compatible Packages): Parts from alternative manufacturers that meet or exceed the electrical specifications of the BA2903FV-E2. These parts may feature enhanced performance characteristics (such as rail-to-rail output capability) while maintaining backward compatibility with the original design.

Key Parameters Determining Substitution:

Number of comparator elements: 2
Output configuration: Open-Collector
Supply voltage range: 2V ~ 36V (single) or ±1V ~ ±18V (dual)
Input offset voltage: 7mV maximum at 5V
Input bias current: 0.25µA maximum at 5V
Output current capability: Minimum 16mA typical at 5V
Quiescent current: 1mA maximum
Operating temperature range: -40°C to 125°C
Package footprint: 8-pin LSSOP or TSSOP with 0.173" width and 4.40mm body width
Surface-mount configuration

Parameter Comparison

Part Number	Manufacturer	Package	Output Type	Voltage - Supply	Input Offset (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Status	Inventory
BA2903FV-E2	Rohm Semiconductor	8-LSSOP	Open-Collector	2V~36V, ±1V~18V	7mV @ 5V	16mA @ 5V	1mA	-40°C ~ 125°C	Active	6050
BA2903YFV-MGE2	Rohm Semiconductor	8-LSSOP	Open-Collector	2V~36V, ±1V~18V	7mV @ 5V	16mA @ 5V	1mA	-40°C ~ 125°C	Active	2400
LM2903PWR	Texas Instruments	8-TSSOP	Open-Collector, Rail-to-Rail	2V~36V, ±1V~18V	7mV @ 30V	20mA	2.5mA	-40°C ~ 125°C	Active	28150
LM2903PWRG3	Texas Instruments	8-TSSOP	Open-Collector, Rail-to-Rail	2V~36V, ±1V~18V	7mV @ 30V	20mA	2.5mA	-40°C ~ 125°C	Active	100300
LM2903QPWRG4Q1	Texas Instruments	8-TSSOP	Open-Collector, Rail-to-Rail	2V~36V, ±1V~18V	7mV @ 5V	20mA	2.5mA	-40°C ~ 125°C	Active	50174
LM2903QPWRQ1	Texas Instruments	8-TSSOP	Open-Collector, Rail-to-Rail	2V~36V, ±1V~18V	7mV @ 5V	20mA	2.5mA	-40°C ~ 125°C	Active	23300
LM2903VQPWRG4Q1	Texas Instruments	8-TSSOP	Open-Collector, Rail-to-Rail	2V~36V, ±1V~18V	7mV @ 5V	20mA	2.5mA	-40°C ~ 125°C	Active	8300
LM2903VQPWRQ1	Texas Instruments	8-TSSOP	Open-Collector, Rail-to-Rail	2V~36V, ±1V~18V	7mV @ 5V	20mA	2.5mA	-40°C ~ 125°C	Active	5477
AS393AMTR-G1	Diodes Incorporated	8-SOIC	Open-Collector	2V~36V, ±1V~18V	3mV @ 1.4V	16mA	1mA	-40°C ~ 85°C	Active	25475
LM2903PT	STMicroelectronics	8-TSSOP	Open-Collector, Rail-to-Rail	2V~36V, ±1V~18V	7mV @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	Active	325100

Engineering Selection Recommendations

Parametric Equivalent Selection: BA2903YFV-MGE2 is the direct parametric equivalent from Rohm Semiconductor with automotive-grade qualification (AEC-Q100). This part maintains identical electrical specifications and package configuration as the BA2903FV-E2, making it suitable for direct substitution in designs requiring automotive-qualified components.

Direct Equivalent Selection for Standard Applications: LM2903PWRG3 and LM2903PWR from Texas Instruments provide direct electrical equivalence with enhanced output current capability (20mA versus 16mA) and rail-to-rail output configuration. These parts are available in high inventory quantities and are suitable for applications where the increased output current and rail-to-rail capability provide design margin.

Automotive-Qualified Alternatives: LM2903QPWRG4Q1 and LM2903VQPWRG4Q1 are automotive-grade (AEC-Q100) alternatives from Texas Instruments. These parts are recommended for automotive and mission-critical applications requiring formal qualification documentation.

Alternative Package Consideration: AS393AMTR-G1 from Diodes Incorporated provides functional equivalence in an 8-SOIC package with superior input offset voltage specification (3mV versus 7mV). This part is suitable for applications where package footprint flexibility is acceptable and lower input offset voltage is beneficial. Note the reduced operating temperature range (-40°C to 85°C versus -40°C to 125°C).

High-Volume Availability: LM2903PT from STMicroelectronics offers the highest inventory availability (325,100 units) with identical electrical specifications to the BA2903FV-E2 and rail-to-rail output capability. This part is recommended for high-volume production where supply chain continuity is critical.

Frequently Asked Questions (FAQ)

Q: Can I substitute BA2903YFV-MGE2 for BA2903FV-E2 without PCB modification? A: Yes. BA2903YFV-MGE2 is a parametric equivalent with identical package footprint (8-LSSOP), electrical specifications, and pin configuration. Direct substitution is possible without design changes. The primary difference is automotive-grade qualification (AEC-Q100).

Q: What is the difference between 8-LSSOP and 8-TSSOP packages? A: Both packages share the same 0.173" width and 4.40mm body width, making them mechanically compatible on standard PCB layouts. LSSOP (Leaded Shrink Small Outline Package) and TSSOP (Thin Shrink Small Outline Package) differ in lead thickness and overall package height. Verify PCB footprint compatibility before substitution.

Q: Are Texas Instruments LM2903 variants drop-in replacements? A: LM2903 variants from Texas Instruments are electrically compatible but use 8-TSSOP packaging instead of 8-LSSOP. They provide enhanced performance (rail-to-rail output, higher output current) and are suitable substitutes if PCB footprint accommodates the TSSOP package. Verify mechanical compatibility with your PCB design.

Q: What does AEC-Q100 qualification mean? A: AEC-Q100 is an automotive-grade qualification standard. Parts bearing this qualification (BA2903YFV-MGE2, LM2903QPWRG4Q1, LM2903VQPWRG4Q1) meet stringent automotive reliability and quality requirements. Use these parts for automotive applications or when formal qualification documentation is required.

Q: Can I use AS393AMTR-G1 in place of BA2903FV-E2? A: AS393AMTR-G1 is functionally equivalent with superior input offset voltage (3mV versus 7mV). However, it uses an 8-SOIC package instead of 8-LSSOP and has a reduced operating temperature range (-40°C to 85°C). Substitution requires PCB redesign and is suitable only if the lower temperature range meets application requirements.

Q: Which substitute offers the best inventory availability? A: LM2903PT from STMicroelectronics has the highest inventory (325,100 units). For high-volume production or time-sensitive projects, this part provides supply chain security while maintaining electrical compatibility with the BA2903FV-E2.

Q: Do all substitutes maintain the same quiescent current specification? A: No. BA2903FV-E2 and BA2903YFV-MGE2 specify 1mA maximum quiescent current. Texas Instruments LM2903 variants and STMicroelectronics LM2903PT specify 2.5mA maximum. For power-sensitive applications, verify that the higher quiescent current is acceptable.

Q: What is the significance of rail-to-rail output in LM2903 variants? A: Rail-to-rail output capability allows the comparator output to swing closer to the supply rails, providing improved noise margin and signal integrity in low-voltage applications. This is an enhancement over the standard open-collector output of the BA2903FV-E2 and does not affect backward compatibility.

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