BA10393 Equivalent & Substitute Parts

Part Overview

The BA10393 is a general-purpose dual comparator IC manufactured by Rohm Semiconductor in 8-DIP through-hole packaging. This device features open-collector output configuration with a wide supply voltage range of 2V to 36V (single supply) or ±1V to ±18V (dual supply), making it suitable for analog signal comparison applications across diverse voltage domains.

The BA10393 is classified as obsolete. Identifying functionally equivalent and mechanically compatible substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance of systems utilizing this component.

Key Parameters

Parameter	Value
Manufacturer Part Number	BA10393
Manufacturer	Rohm Semiconductor
Category	Linear Comparator
Package / Case	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Number of Elements	2
Output Type	Open-Collector
Voltage - Supply, Single/Dual (±)	2V ~ 36V, ±1V ~ 18V
Voltage - Input Offset (Max)	5mV @ 5V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	16mA @ 5V
Current - Quiescent (Max)	1mA
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the BA10393 is determined by strict alignment of the following critical parameters:

Mandatory Compatibility Criteria:

Number of Elements: 2 (dual comparator)
Output Type: Open-Collector
Voltage - Supply Range: Must support 2V ~ 36V single supply or ±1V ~ 18V dual supply
Voltage - Input Offset (Max): 5mV or lower @ 5V
Current - Input Bias (Max): 0.25µA or lower @ 5V
Current - Output (Typ): 16mA or higher @ 5V
Current - Quiescent (Max): 1mA or lower
Operating Temperature: -40°C ~ 85°C minimum

Package Substitution Categories:

Direct Package Match (8-DIP Through-Hole): Parts maintaining identical 8-DIP (0.300", 7.62mm) through-hole packaging for pin-compatible board-level replacement without layout modification.
Surface-Mount Alternatives (8-SOIC / 8-VSSOP): Parts in 8-SOIC or 8-VSSOP surface-mount packages offering functional equivalence with modified PCB assembly requirements.

Substitute parts are grouped by package type and electrical parameter alignment. All listed substitutes meet or exceed the electrical specifications of the BA10393 within their respective package categories.

Parameter Comparison

Part Number	Manufacturer	Package	Mounting	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent Current (Max)	Temp Range	Product Status
BA10393	Rohm Semiconductor	8-DIP	Through Hole	2V~36V, ±1V~18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Obsolete
AS393P-E1	Diodes Incorporated	8-DIP	Through Hole	2V~36V, ±1V~18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Active
LM393N/NOPB	Texas Instruments	8-DIP	Through Hole	2V~36V, ±1V~18V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	Active
LM393P	Texas Instruments	8-DIP	Through Hole	2V~36V, ±1V~18V	5mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	Active
LM2903P	Texas Instruments	8-DIP	Through Hole	2V~36V, ±1V~18V	7mV @ 30V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	Active
LM393AP	Texas Instruments	8-DIP	Through Hole	2V~36V, ±1V~18V	2mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	Active
AS393AMTR-G1	Diodes Incorporated	8-SOIC	Surface Mount	2V~36V, ±1V~18V	3mV @ 1.4V	0.4µA @ 5V	16mA	1mA	-40°C ~ 85°C	Active
AS393MTR-G1	Diodes Incorporated	8-SOIC	Surface Mount	2V~36V, ±1V~18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Active
LMV393IDGKR	Texas Instruments	8-VSSOP	Surface Mount	2.7V~5.5V, N/A	7mV @ 5V	0.25µA @ 5V	84mA @ 5V	250µA	-40°C ~ 85°C	Active
LM393F-E2	Rohm Semiconductor	8-SOP	Surface Mount	3V~32V, ±1.5V~16V	4.5mV @ 32V	0.25µA @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Active
AZV393MTR-E1	Diodes Incorporated	8-SOIC	Surface Mount	2.5V~5.5V, N/A	7mV @ 5V	0.25µA @ 5V	84mA @ 5V	200µA	-40°C ~ 85°C	Active

Engineering Selection Recommendations

Through-Hole 8-DIP Direct Substitutes (Pin-Compatible):

The AS393P-E1 (Diodes Incorporated) is the primary direct substitute. It maintains identical electrical specifications, package geometry, and operating temperature range as the BA10393. Product status is active with high inventory availability (40,200 units), ensuring supply chain continuity.

The LM393N/NOPB and LM393P (Texas Instruments) are functionally compatible alternatives in 8-DIP packaging. Both are active products with extensive inventory. The LM393P offers slightly higher output current (20mA vs. 16mA). Operating temperature range is narrower (0°C ~ 70°C vs. -40°C ~ 85°C), which may be a constraint in extended-temperature applications. Quiescent current is higher (2.5mA vs. 1mA).

The LM2903P (Texas Instruments) extends the upper operating temperature to 125°C, suitable for high-temperature environments. It maintains full voltage range compatibility and meets all electrical criteria. Quiescent current is 2.5mA.

The LM393AP (Texas Instruments) provides superior input offset specification (2mV @ 30V) and is suitable for precision comparison applications. Operating temperature range is 0°C ~ 70°C.

Surface-Mount Alternatives (8-SOIC / 8-VSSOP):

The AS393AMTR-G1 and AS393MTR-G1 (Diodes Incorporated) in 8-SOIC packaging provide functional equivalence with surface-mount assembly. Both maintain the full voltage range (2V~36V, ±1V~18V) and operating temperature (-40°C ~ 85°C). The AS393MTR-G1 has higher inventory (300,400 units) and matches the BA10393 electrical specifications precisely.

The LMV393IDGKR (Texas Instruments) in 8-VSSOP packaging is restricted to 2.7V~5.5V supply range and is not suitable for applications requiring the full 2V~36V range of the BA10393. This part is appropriate only for low-voltage, single-supply designs.

The LM393F-E2 (Rohm Semiconductor) in 8-SOP packaging offers a narrower supply range (3V~32V, ±1.5V~16V) compared to the BA10393 (2V~36V, ±1V~18V). It is suitable for applications within this reduced voltage envelope.

The AZV393MTR-E1 (Diodes Incorporated) is restricted to 2.5V~5.5V supply range and is not a general substitute for the BA10393 in wide-voltage applications.

Compliance & Certification:

All listed substitutes are ROHS3 compliant and REACH unaffected, meeting modern environmental and regulatory requirements. All carry EAR99 ECCN classification.

Frequently Asked Questions (FAQ)

Q: Can I use AS393P-E1 as a direct replacement for BA10393 without PCB modification?

A: Yes. The AS393P-E1 is pin-compatible in 8-DIP (0.300", 7.62mm) through-hole packaging and maintains identical electrical specifications. No PCB layout changes are required for board-level substitution.

Q: What is the key difference between through-hole and surface-mount alternatives?

A: Through-hole parts (8-DIP) mount vertically through PCB holes and are suitable for existing through-hole designs. Surface-mount parts (8-SOIC, 8-VSSOP) require SMD assembly equipment and modified PCB footprints. Electrical functionality is equivalent within specified voltage ranges.

Q: Why do some substitutes have narrower voltage ranges than the BA10393?

A: Parts such as LMV393IDGKR and AZV393MTR-E1 are optimized for low-voltage, single-supply applications (2.5V~5.5V or 2.7V~5.5V). They are not suitable for applications requiring the full 2V~36V range of the BA10393. Verify your application's voltage requirements before selection.

Q: Is the LM393P suitable for applications requiring -40°C operation?

A: No. The LM393P operating temperature range is 0°C ~ 70°C. For applications requiring -40°C operation, use AS393P-E1, AS393AMTR-G1, AS393MTR-G1, or LM2903P.

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

A: Input offset voltage determines the accuracy of voltage comparison. The BA10393 specifies 5mV @ 5V. Substitutes with lower offset (e.g., LM393AP at 2mV @ 30V) provide higher precision. Substitutes with higher offset (e.g., LMV393IDGKR at 7mV @ 5V) are acceptable for applications with larger comparison thresholds.

Q: Can I use LMV393IDGKR in a ±18V dual-supply application?

A: No. The LMV393IDGKR is rated for 2.7V~5.5V single supply only and does not support dual-supply operation. It is restricted to low-voltage applications.

Q: Which substitute offers the best high-temperature performance?

A: The LM2903P extends the upper operating temperature to 125°C, compared to 85°C for most alternatives. It is suitable for high-temperature environments while maintaining full voltage range compatibility (2V~36V, ±1V~18V).

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitutes carry ROHS3 compliance certification, meeting modern environmental standards for lead-free manufacturing and hazardous substance restrictions.

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