BA10339 Equivalent & Substitute Parts

Part Overview

The BA10339 is a quad general-purpose comparator IC manufactured by Rohm Semiconductor in 14-DIP through-hole packaging. This device features open-collector outputs and operates across a wide supply voltage range of 3V to 36V (single supply) or ±1.5V to ±18V (dual supply). The BA10339 is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support.

Key Parameters

Parameter	BA10339 Specification
Manufacturer	Rohm Semiconductor
Package Type	14-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Number of Elements	4
Output Type	Open-Collector
Voltage Supply (Single/Dual)	3V ~ 36V / ±1.5V ~ 18V
Input Offset Voltage (Max)	5mV @ 5V
Input Bias Current (Max)	0.25µA @ 5V
Output Current (Typ)	16mA @ 5V
Quiescent Current (Max)	2mA
Operating Temperature	-40°C ~ 85°C
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the BA10339 is determined by the following critical parameters:

Functional equivalence: Quad general-purpose comparator with open-collector output
Supply voltage compatibility: Minimum 3V to 36V single supply or ±1.5V to ±18V dual supply
Output characteristics: Open-collector topology with 16mA typical output current
Electrical specifications: Input offset voltage ≤5mV, input bias current ≤0.25µA, quiescent current ≤2mA
Operating temperature range: -40°C to 85°C
Compliance: ROHS3 compliant for modern production environments

Substitute parts are grouped into two categories:

Category 1: Through-Hole DIP Packages – Direct pin-compatible replacements maintaining the same 14-DIP footprint for board-level compatibility without layout changes.

Category 2: Surface-Mount Packages – Functionally equivalent alternatives in 14-SOIC or 14-TSSOP packages for designs utilizing surface-mount assembly processes.

Parameter Comparison

Part Number	Manufacturer	Package	Mounting	Supply Voltage	Input Offset (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Status
BA10339	Rohm Semiconductor	14-DIP	Through Hole	3V~36V / ±1.5V~18V	5mV @ 5V	16mA @ 5V	2mA	-40°C ~ 85°C	Obsolete
LM339N/NOPB	Texas Instruments	14-DIP	Through Hole	2V~36V / ±1V~18V	5mV @ 5V	16mA @ 5V	2.5mA	-25°C ~ 85°C	Active
LM339NE3	Texas Instruments	14-DIP	Through Hole	2V~30V / ±1V~15V	5mV @ 30V	20mA	2.5mA	0°C ~ 70°C	Active
LM339AN	Harris Corporation	14-DIP	Through Hole	2V~32V / ±1V~16V	2mV @ 30V	16mA @ 5V	2.5mA	0°C ~ 70°C	Obsolete
LM339F-E2	Rohm Semiconductor	14-SOIC	Surface Mount	3V~32V / ±1.5V~16V	4.5mV @ 32V	16mA @ 5V	2mA	-40°C ~ 85°C	Active
AS339AMTR-E1	Diodes Incorporated	14-SOIC	Surface Mount	2V~36V / ±1V~18V	3mV @ 5V	16mA @ 5V	2mA	-40°C ~ 85°C	Active
AS339MTR-E1	Diodes Incorporated	14-SOIC	Surface Mount	2V~36V / ±1V~18V	5mV @ 5V	16mA @ 5V	2mA	-40°C ~ 85°C	Active
AS339MTR-G1	Diodes Incorporated	14-SOIC	Surface Mount	2V~36V / ±1V~18V	5mV @ 5V	16mA	2mA	-40°C ~ 85°C	Active
LMV339MTX/NOPB	National Semiconductor	14-TSSOP	Surface Mount	2.7V~5.5V	7mV @ 5V	84mA @ 5V	300µA	-40°C ~ 85°C	Active
LP339N/NOPB	Texas Instruments	14-DIP	Through Hole	2V~36V / ±1V~18V	5mV @ 5V	30mA @ 5V	100µA	0°C ~ 70°C	Active
LM2901N	National Semiconductor	14-DIP	Through Hole	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Active

Engineering Selection Recommendations

For Through-Hole DIP Replacement (Direct Pin Compatibility):

LM339N/NOPB (Texas Instruments) is the primary active substitute for BA10339. It maintains 14-DIP packaging, meets all electrical specifications, operates across the required temperature range (-25°C to 85°C), and carries ROHS3 compliance. This part is actively produced and widely available.

LM339NE3 (Texas Instruments) provides an alternative through-hole option with enhanced output current (20mA typical) and ROHS3 compliance, though its operating temperature range is limited to 0°C to 70°C.

LP339N/NOPB (Texas Instruments) offers CMOS/MOS output characteristics with higher output current capability (30mA) in 14-DIP packaging and ROHS3 compliance, suitable for applications requiring lower input bias current (0.025µA).

For Surface-Mount Replacement (Design Flexibility):

AS339AMTR-E1 and AS339MTR-E1 (Diodes Incorporated) provide 14-SOIC packaging with full supply voltage range compatibility (2V to 36V single supply, ±1V to ±18V dual supply) and ROHS3 compliance. Both are actively produced with high inventory availability.

LM339F-E2 (Rohm Semiconductor) maintains the original manufacturer's design in 14-SOIC surface-mount format with ROHS3 compliance and active production status.

LMV339MTX/NOPB (National Semiconductor) is suitable only for applications with restricted supply voltage (2.7V to 5.5V) and offers enhanced output current (84mA) in 14-TSSOP packaging.

Compliance Considerations:

All recommended active substitutes carry ROHS3 compliance certification, meeting modern environmental and regulatory requirements. The BA10339 and LM339AN are obsolete; active alternatives should be prioritized for new designs and long-term production continuity.

Frequently Asked Questions (FAQ)

Q: Can LM339N/NOPB directly replace BA10339 without PCB modifications?

A: Yes. Both parts use 14-DIP through-hole packaging with identical pin configurations. No PCB layout changes are required. Electrical specifications are compatible across the operating range.

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

A: Through-hole substitutes (14-DIP packages) maintain identical PCB footprints and require no layout redesign. Surface-mount substitutes (14-SOIC, 14-TSSOP packages) require PCB redesign and surface-mount assembly processes but offer smaller board area and modern manufacturing compatibility.

Q: Is LMV339MTX/NOPB suitable as a general replacement?

A: No. LMV339MTX/NOPB operates only at 2.7V to 5.5V supply voltage, which is significantly more restrictive than BA10339's 3V to 36V range. Use this part only in applications with fixed low-voltage supplies.

Q: Why is LP339N/NOPB listed as an alternative despite different output current?

A: LP339N/NOPB provides CMOS/MOS output characteristics with lower input bias current (0.025µA versus 0.25µA), making it suitable for high-impedance input applications. Higher output current (30mA) and quiescent current (100µA) must be evaluated against application requirements.

Q: Are all recommended substitutes ROHS3 compliant?

A: All active substitutes listed carry ROHS3 compliance. Obsolete parts (BA10339, LM339AN) do not meet current compliance standards and should not be used in new designs intended for modern supply chains.

Q: What packaging option provides the best inventory availability?

A: AS339AMTR-E1 and AS339MTR-E1 (Diodes Incorporated) show the highest inventory levels (50,100 and 44,546 units respectively) in 14-SOIC surface-mount format with active production status.

Q: Can I use LM2901N as a substitute?

A: LM2901N is listed as active but lacks complete electrical specification data in the provided parameters. Verification of detailed specifications against application requirements is necessary before selection.

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