BA2901FV-E2 Equivalent & Substitute Parts

Part Overview

The BA2901FV-E2 is a general-purpose comparator IC manufactured by Rohm Semiconductor, featuring four independent comparators with open-collector outputs in a 14-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), making it suitable for diverse analog signal processing applications. The part is currently in active production status with substantial inventory availability (60,327 units in stock).

Equivalent and substitute parts are necessary when the original BA2901FV-E2 becomes unavailable, when alternative packaging formats are required for manufacturing optimization, or when design requirements necessitate automotive-grade qualification or different thermal operating ranges.

Key Parameters

Parameter	Value
Manufacturer Part Number	BA2901FV-E2
Manufacturer	Rohm Semiconductor
Category	Linear
Type	General Purpose Comparator
Number of Elements	4
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)	2mA
Operating Temperature	-40°C ~ 125°C
Package / Case	14-LSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the BA2901FV-E2 is determined by the following critical parameters:

Core Functional Parameters:

Number of comparator elements: 4
Output type: Open-Collector
Supply voltage range: 2V ~ 36V (single) or ±1V ~ ±18V (dual)
Input offset voltage: ≤7mV @ 5V
Input bias current: ≤0.25µA @ 5V
Output current capability: ≥16mA @ 5V
Quiescent current: ≤2.5mA
Operating temperature range: -40°C to 125°C minimum

Package Compatibility:

Surface-mount package with 14-pin configuration
Pin pitch and footprint compatibility with 14-LSSOP, 14-TSSOP, or 14-SOIC packages

Compliance Requirements:

ROHS3 compliance
MSL rating of 1 or 3 (168 Hours)

Substitute parts are classified into two categories: Direct Substitutes maintain identical electrical specifications and package compatibility, while Similar Substitutes offer equivalent functionality with acceptable variations in non-critical parameters such as packaging format, operating temperature range, or output current specifications.

Parameter Comparison

Part Number	Manufacturer	Package	Supply Voltage	Input Offset (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Product Status	Automotive Grade
BA2901FV-E2	Rohm Semiconductor	14-LSSOP	2V~36V, ±1V~18V	7mV @ 5V	16mA @ 5V	2mA	-40°C ~ 125°C	Active	No
LM2901QPWRG4Q1	Texas Instruments	14-TSSOP	2V~36V, ±1V~18V	7mV @ 5V	20mA	2.5mA	-40°C ~ 125°C	Active	Yes (AEC-Q100)
LM2901QPWRQ1	Texas Instruments	14-TSSOP	2V~36V, ±1V~18V	7mV @ 5V	20mA	2.5mA	-40°C ~ 125°C	Active	Yes (AEC-Q100)
LM2901VQPWR	Rohm Semiconductor	14-TSSOP	2V~36V, ±1V~18V	7mV @ 5V	16nA @ 5V	2mA	-40°C ~ 125°C	Not For New Designs	No
LM2901VQPWRG4Q1	Texas Instruments	14-TSSOP	2V~36V, ±1V~18V	7mV @ 5V	20mA	2.5mA	-40°C ~ 125°C	Active	Yes (AEC-Q100)
LM2901VQPWRQ1	Texas Instruments	14-TSSOP	2V~36V, ±1V~18V	7mV @ 5V	20mA	2.5mA	-40°C ~ 125°C	Active	Yes (AEC-Q100)
AS339MTR-E1	Diodes Incorporated	14-SOIC	2V~36V, ±1V~18V	5mV @ 5V	16mA @ 5V	2mA	-40°C ~ 85°C	Active	No
LM239APT	STMicroelectronics	14-TSSOP	2V~32V, ±1V~16V	2mV @ 30V	16mA @ 5V	2mA	-40°C ~ 105°C	Active	No
LM239DTBR2G	onsemi	14-TSSOP	3V~36V, ±1.5V~18V	5mV @ 5V	16mA @ 5V	2.5mA	-25°C ~ 85°C	Active	No
LM239PT	STMicroelectronics	14-TSSOP	2V~32V, ±1V~16V	5mV @ 30V	16mA @ 5V	2mA	-40°C ~ 105°C	Active	No
LM2901AT14-13	Diodes Incorporated	14-TSSOP	2V~36V, ±1V~18V	2mV @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	Active	No

Engineering Selection Recommendations

Direct Substitutes (Preferred for Pin-Compatible Replacement):

The LM2901QPWRG4Q1, LM2901QPWRQ1, LM2901VQPWRG4Q1, and LM2901VQPWRQ1 from Texas Instruments are the primary direct substitutes. These parts maintain identical electrical specifications and operating temperature range (-40°C to 125°C) as the BA2901FV-E2. The Texas Instruments variants offer automotive-grade qualification (AEC-Q100), which provides additional reliability assurance for demanding applications. The package transition from 14-LSSOP to 14-TSSOP requires PCB layout verification but maintains functional compatibility.

Alternative Substitutes (Package or Specification Variations):

The AS339MTR-E1 from Diodes Incorporated provides equivalent functionality in a 14-SOIC package with a reduced operating temperature range (-40°C to 85°C). This part is suitable for applications not requiring the full 125°C upper temperature limit.

The LM239 series variants (LM239APT, LM239DTBR2G, LM239PT) from STMicroelectronics and onsemi offer comparable performance with minor supply voltage range variations. The LM239DTBR2G operates at a reduced lower temperature limit (-25°C) and is suitable for commercial-grade applications.

The LM2901AT14-13 from Diodes Incorporated maintains full temperature range compatibility and offers superior input offset voltage specification (2mV @ 5V).

Avoid:

The LM2901VQPWR from Rohm Semiconductor carries a "Not For New Designs" status and should not be selected for new applications despite electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can I directly replace BA2901FV-E2 with LM2901QPWRG4Q1 without PCB modifications?

A: The LM2901QPWRG4Q1 uses a 14-TSSOP package versus the 14-LSSOP package of the BA2901FV-E2. While both packages have identical pin pitch (0.173", 4.40mm width) and pin count, PCB footprint verification is required. The TSSOP package has slightly different lead geometry. Consult the respective datasheets for exact footprint dimensions before assembly.

Q: What is the difference between direct and similar substitutes?

A: Direct substitutes maintain identical electrical specifications and temperature ranges. Similar substitutes offer equivalent core functionality but may have variations in supply voltage range, operating temperature limits, or output current specifications. Selection depends on your specific application requirements.

Q: Why do some substitutes have automotive-grade qualification?

A: Automotive-grade parts (AEC-Q100) undergo additional qualification testing for reliability in harsh automotive environments. These are optional unless your application specifically requires automotive certification.

Q: Is the LM2901VQPWR still available for purchase?

A: The LM2901VQPWR carries a "Not For New Designs" status, indicating the manufacturer is phasing out this variant. While inventory may be available (17,100 units), new designs should select active-status alternatives such as the LM2901QPWRG4Q1 or LM2901VQPWRG4Q1.

Q: How do I verify package compatibility for my PCB?

A: Obtain the official datasheets for both the original part and the substitute. Compare the package outline drawings, pin pitch, lead dimensions, and body size. The 14-LSSOP, 14-TSSOP, and 14-SOIC packages have different body widths and lead configurations despite similar pin counts.

Q: Are all listed substitutes ROHS3 compliant?

A: Yes, all parts listed in this document are ROHS3 compliant. Moisture sensitivity levels vary between MSL 1 (Unlimited) and MSL 3 (168 Hours), which affects storage and handling requirements.

Q: What is the significance of input offset voltage differences?

A: Input offset voltage determines the accuracy of the comparator threshold. The BA2901FV-E2 specifies 7mV maximum at 5V. Substitutes with lower specifications (such as 2mV or 5mV) provide improved accuracy but are not required for general-purpose applications. Higher offset voltages would be unacceptable.

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