BA2903SFVM-TR Equivalent & Substitute Parts

Part Overview

The BA2903SFVM-TR is a dual general-purpose comparator manufactured by Rohm Semiconductor in an 8-MSOP surface-mount package. This linear integrated circuit features open-collector output configuration and operates across a wide supply voltage range of 2V to 36V (single supply) or ±1V to ±18V (dual supply). The device is actively produced and ROHS3 compliant, making it suitable for industrial and commercial applications requiring precision voltage comparison functionality.

Substitute parts are necessary when the primary device becomes unavailable, when alternative packaging formats are required for specific PCB layouts, or when enhanced performance specifications are needed for particular application requirements.

Key Parameters

Parameter	BA2903SFVM-TR
Manufacturer	Rohm Semiconductor
Number of Elements	2
Output Type	Open-Collector
Voltage Supply (Single/Dual)	2V ~ 36V, ±1V ~ 18V
Input Offset Voltage (Max)	7mV @ 5V
Input Bias Current (Max)	0.25µA @ 5V
Output Current (Typ)	16mA @ 5V
Quiescent Current (Max)	1mA
Operating Temperature	-40°C ~ 105°C
Package	8-MSOP (0.110", 2.80mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the BA2903SFVM-TR is determined by the following critical parameters:

Functional Equivalence Requirements:

Dual comparator configuration (2 elements)
Open-collector output topology
Supply voltage range: minimum 2V ~ 36V single supply or ±1V ~ ±18V dual supply
Input bias current: 0.25µA @ 5V maximum
Output current capability: 16mA @ 5V minimum

Package Compatibility Considerations:

Surface-mount technology required
8-pin package format (MSOP, SOIC, TSSOP, or PDIP variants acceptable)
Pin-compatible or functionally equivalent pinout

Compliance & Reliability:

ROHS3 compliance mandatory
Active product status preferred
MSL rating of 1 or 3 acceptable for standard applications

Substitute parts are grouped by package type: MSOP/TSSOP variants maintain the smallest footprint; SOIC packages provide standard surface-mount spacing; PDIP packages enable through-hole mounting for legacy designs.

Parameter Comparison

Part Number	Manufacturer	Package Type	Supply Voltage	Input Offset (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Output Type
BA2903SFVM-TR	Rohm Semiconductor	8-MSOP	2V ~ 36V, ±1V ~ 18V	7mV @ 5V	16mA @ 5V	1mA	-40°C ~ 105°C	Open-Collector
AS393MMTR-G1	Diodes Incorporated	8-MSOP	2V ~ 36V, ±1V ~ 18V	5mV @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Open-Collector
AS393MTR-E1	Diodes Incorporated	8-SOIC	2V ~ 36V, ±1V ~ 18V	5mV @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Open-Collector
AS393P-E1	Diodes Incorporated	8-DIP	2V ~ 36V, ±1V ~ 18V	5mV @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Open-Collector
AZV393MTR-G1	Diodes Incorporated	8-SOIC	2.5V ~ 5.5V	7mV @ 5V	84mA	200µA	-40°C ~ 85°C	Open-Collector
LM2903DGKR	Rohm Semiconductor	8-MSOP	2V ~ 36V, ±1V ~ 18V	7mV @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	Open-Collector, Rail-to-Rail
LM2903DMR2G	onsemi	8-MSOP	2V ~ 36V, ±1V ~ 18V	7mV @ 30V	16mA @ 5V	2.5mA	-40°C ~ 105°C	Open-Collector, Rail-to-Rail
LM2903YST	STMicroelectronics	8-MiniSO	2V ~ 36V, ±1V ~ 18V	7mV @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	Open-Collector, Rail-to-Rail
LM293ADGKR	Texas Instruments	8-VSSOP	2V ~ 36V, ±1V ~ 18V	2mV @ 30V	20mA	2.5mA	-25°C ~ 85°C	Open-Collector, Open-Drain, Rail-to-Rail
LM293DGKR	Texas Instruments	8-VSSOP	2V ~ 36V, ±1V ~ 18V	5mV @ 30V	20mA	2.5mA	-25°C ~ 85°C	Open-Collector, Open-Drain, Rail-to-Rail
LM293DMR2G	onsemi	8-MSOP	2V ~ 36V, ±1V ~ 18V	5mV @ 30V	16mA @ 5V	2.5mA	-25°C ~ 85°C	Open-Collector, Open-Drain, Rail-to-Rail

Engineering Selection Recommendations

Direct Package Equivalents (8-MSOP Surface Mount): AS393MMTR-G1, LM2903DGKR, LM2903DMR2G, and LM293DMR2G maintain identical or superior electrical specifications within the same 8-MSOP footprint. These parts are ROHS3 compliant and actively produced. LM2903DGKR and LM2903YST extend operating temperature to 125°C, providing enhanced thermal margin for industrial applications.

Alternative Surface-Mount Packages: AS393MTR-E1 (8-SOIC) and LM293ADGKR/LM293DGKR (8-VSSOP) provide functionally equivalent performance in different surface-mount formats. These accommodate PCB designs requiring larger pitch spacing or alternative footprint geometries. LM293 variants feature enhanced input offset voltage specifications (2mV to 5mV) and higher output current capability (20mA).

Through-Hole Alternative: AS393P-E1 in 8-DIP package enables substitution in legacy through-hole designs while maintaining full electrical compatibility and ROHS3 compliance.

Restricted Substitution: AZV393MTR-G1 operates within a narrower supply voltage range (2.5V ~ 5.5V) and exhibits significantly higher quiescent current (200µA). This part is suitable only for applications operating exclusively within the 2.5V to 5.5V window and where increased power consumption is acceptable.

Compliance Status: All listed substitutes maintain ROHS3 compliance and active product status. MSL ratings of 1 (unlimited moisture exposure) are preferred for standard manufacturing environments; MSL-3 rated parts (168-hour limit) require controlled storage conditions.

Frequently Asked Questions (FAQ)

Q: Can AS393MMTR-G1 directly replace BA2903SFVM-TR in existing designs? A: Yes. AS393MMTR-G1 maintains identical 8-MSOP package dimensions, pinout compatibility, and electrical specifications. The 5mV input offset voltage is superior to the 7mV specification of BA2903SFVM-TR. Operating temperature range is -40°C to 85°C versus -40°C to 105°C; verify application requirements do not exceed 85°C.

Q: What is the difference between LM2903 and LM293 series comparators? A: LM2903 devices feature open-collector output with rail-to-rail capability. LM293 variants add open-drain output configuration and provide enhanced input offset voltage specifications (2mV to 5mV at 30V). Both series support identical supply voltage ranges and quiescent current specifications.

Q: Is LM2903YST suitable for automotive applications? A: LM2903YST carries AEC-Q100 automotive qualification and extends operating temperature to 125°C. It is suitable for automotive-grade applications requiring extended temperature performance. Verify specific automotive qualification requirements with application documentation.

Q: Can I use AZV393MTR-G1 in a ±18V dual-supply application? A: No. AZV393MTR-G1 operates only within 2.5V to 5.5V supply range and cannot support ±18V dual-supply operation. Select AS393 or LM2903 series variants for wide supply voltage applications.

Q: What is the impact of MSL-3 rating on component handling? A: MSL-3 rated parts (AS393 series, LM2903YST) require storage in controlled humidity environments and have a 168-hour floor-life limit after moisture exposure. MSL-1 rated parts (BA2903SFVM-TR, LM2903DGKR) have unlimited moisture exposure tolerance and are preferred for standard manufacturing without special storage requirements.

Q: Are 8-SOIC and 8-MSOP packages pin-compatible? A: No. 8-SOIC (0.154" width) and 8-MSOP (0.110" width) have different physical dimensions and PCB footprints. AS393MTR-E1 (8-SOIC) requires PCB redesign and cannot be used as a drop-in replacement for 8-MSOP designs without layout modification.

Q: Which substitute offers the lowest input offset voltage? A: LM293ADGKR specifies 2mV input offset voltage at 30V, the lowest among all listed substitutes. This enhanced precision is suitable for applications requiring tight voltage threshold accuracy.

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