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BA10339F-E2 Equivalent & Substitute Parts
Part Overview
The BA10339F-E2 is a general-purpose comparator IC manufactured by Rohm Semiconductor, featuring four independent comparators with open-collector outputs in a 14-SOP surface-mount package. This device operates across a wide supply voltage range of 3V to 36V (single supply) or ±1.5V to ±18V (dual supply), with an input offset voltage of 5mV at 5V and a maximum quiescent current of 2mA. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).
Substitute parts are necessary when the BA10339F-E2 becomes unavailable due to supply constraints, when alternative packaging formats are required, or when design specifications allow for compatible alternatives with enhanced performance characteristics or extended temperature ratings.
Substiute Parts
Key Parameters
| Parameter | BA10339F-E2 Specification |
|---|---|
| Manufacturer | Rohm Semiconductor |
| Package Type | 14-SOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| Number of Comparators | 4 |
| Output Type | Open-Collector |
| Supply Voltage Range (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 |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution compatibility for the BA10339F-E2 is determined by the following critical parameters:
Electrical Compatibility Requirements:
- Four independent comparators with open-collector output configuration
- Supply voltage range must encompass or exceed 3V ~ 36V (single) or ±1.5V ~ 18V (dual)
- Input offset voltage, input bias current, and output current specifications must be within acceptable design tolerances
- Quiescent current must not exceed 2.5mA to maintain power budget compliance
- Operating temperature range must support -40°C minimum operation
Mechanical Compatibility Requirements:
- 14-pin SOIC package format (0.154" or 0.173" width variants acceptable for PCB layout compatibility)
- Surface-mount technology
- Tape & Reel or Cut Tape packaging formats
Regulatory & Environmental Requirements:
- ROHS3 compliance mandatory
- MSL rating of 1 or 3 acceptable (MSL 3 requires controlled moisture exposure during assembly)
Substitute parts are grouped into two categories: direct pin-compatible replacements with identical or superior electrical performance, and functionally equivalent alternatives with extended operating temperature ranges or automotive-grade qualifications.
Parameter Comparison
| Part Number | Manufacturer | Package | Supply Voltage (Single/Dual) | Input Offset (Max) | Output Current (Typ) | Quiescent Current (Max) | Operating Temp | MSL | Product Status |
|---|---|---|---|---|---|---|---|---|---|
| BA10339F-E2 | Rohm Semiconductor | 14-SOP (4.40mm) | 3V~36V / ±1.5V~18V | 5mV @ 5V | 16mA @ 5V | 2mA | -40°C ~ 85°C | 1 | Active |
| AS339AMTR-E1 | Diodes Incorporated | 14-SOIC (3.90mm) | 2V~36V / ±1V~18V | 3mV @ 5V | 16mA @ 5V | 2mA | -40°C ~ 85°C | 1 | Active |
| AS339MTR-E1 | Diodes Incorporated | 14-SOIC (3.90mm) | 2V~36V / ±1V~18V | 5mV @ 5V | 16mA @ 5V | 2mA | -40°C ~ 85°C | 3 | Active |
| AS339MTR-G1 | Diodes Incorporated | 14-SOIC (3.90mm) | 2V~36V / ±1V~18V | 5mV @ 5V | 16mA | 2mA | -40°C ~ 85°C | 3 | Active |
| LM2901AVQDR | Texas Instruments | 14-SOIC (3.90mm) | 2V~32V / ±1V~16V | 2mV @ 32V | 20mA | 2.5mA | -40°C ~ 125°C | 1 | Active |
| LM2901AVQDRG4 | Texas Instruments | 14-SOIC (3.90mm) | 2V~32V / ±1V~16V | 2mV @ 32V | 20mA | 2.5mA | -40°C ~ 125°C | 1 | Discontinued at DiGi Electronics |
| LM2901AVQDRG4Q1 | Texas Instruments | 14-SOIC (3.90mm) | 2V~36V / ±1V~18V | 2mV @ 5V | 20mA | 2.5mA | -40°C ~ 125°C | 1 | Last Time Buy |
| LM2901AVQDRQ1 | Texas Instruments | 14-SOIC (3.90mm) | 2V~36V / ±1V~18V | 2mV @ 5V | 20mA | 2.5mA | -40°C ~ 125°C | 1 | Active |
| LM2901QDRG4Q1 | Texas Instruments | 14-SOIC (3.90mm) | 2V~36V / ±1V~18V | 7mV @ 5V | 20mA | 2.5mA | -40°C ~ 125°C | 1 | Last Time Buy |
| LM2901QDRQ1 | Texas Instruments | 14-SOIC (3.90mm) | 2V~36V / ±1V~18V | 7mV @ 5V | 20mA | 2.5mA | -40°C ~ 125°C | 1 | Active |
| LM2901VQDR | Rohm Semiconductor | 14-SOIC (3.90mm) | 2V~36V / ±1V~18V | 7mV @ 5V | 16nA @ 5V | 2mA | -40°C ~ 125°C | 1 | Obsolete |
Engineering Selection Recommendations
Primary Substitutes (Active Status, Full Compatibility):
AS339AMTR-E1 and AS339MTR-E1 from Diodes Incorporated are direct functional equivalents with identical electrical performance to the BA10339F-E2. Both devices feature four open-collector comparators, matching quiescent current specifications, and identical operating temperature range. AS339AMTR-E1 offers superior input offset voltage (3mV vs. 5mV) with MSL 1 rating. AS339MTR-E1 maintains the 5mV offset specification but carries MSL 3 rating, requiring controlled moisture exposure during assembly. Both are currently in active production with ROHS3 compliance.
Extended Temperature Substitutes (Active Status, Enhanced Performance):
LM2901AVQDRQ1 from Texas Instruments provides extended operating temperature range (-40°C to 125°C vs. -85°C) with automotive-grade AEC-Q100 qualification. This device supports the full supply voltage range of the BA10339F-E2 (2V~36V / ±1V~18V) and features superior input offset voltage (2mV @ 5V). Higher output current capability (20mA vs. 16mA) and slightly elevated quiescent current (2.5mA vs. 2mA) remain within acceptable design margins. Currently in active production with MSL 1 rating.
LM2901QDRQ1 offers identical electrical and thermal specifications to LM2901AVQDRQ1 with automotive qualification, currently in active production.
Alternative Substitutes (Limited Availability or Obsolete Status):
LM2901AVQDRG4 is discontinued at DiGi Electronics but remains available through alternative channels. LM2901AVQDRG4Q1 and LM2901QDRG4Q1 carry Last Time Buy status, indicating production discontinuation is imminent. LM2901VQDR from Rohm Semiconductor is obsolete and should not be selected for new designs despite extended temperature capability.
Packaging Consideration:
All substitute parts utilize 14-SOIC package format with 3.90mm width, compared to the BA10339F-E2's 14-SOP format with 4.40mm width. PCB layout verification is required to confirm mechanical compatibility, though both packages maintain identical pin pitch and electrical interface.
Frequently Asked Questions (FAQ)
Q: Can AS339AMTR-E1 directly replace BA10339F-E2 without PCB modifications?
A: Electrical substitution is direct. Both devices feature identical pin configuration, four open-collector comparators, and matching electrical specifications. Package width differs (3.90mm vs. 4.40mm), requiring PCB layout verification to confirm mechanical fit within the existing footprint. Pin-to-pin compatibility is confirmed.
Q: What is the difference between AS339MTR-E1 and AS339AMTR-E1?
A: Both are functionally equivalent Diodes Incorporated comparators with identical electrical performance and operating temperature range. The primary difference is MSL rating: AS339AMTR-E1 carries MSL 1 (unlimited moisture sensitivity), while AS339MTR-E1 carries MSL 3 (168-hour moisture exposure limit). MSL 3 requires controlled humidity storage and assembly environment management. AS339AMTR-E1 is preferred for applications without moisture-controlled assembly infrastructure.
Q: Why does LM2901AVQDRQ1 show higher quiescent current (2.5mA vs. 2mA)?
A: The 0.5mA increase in maximum quiescent current remains within acceptable design tolerances for most applications. This specification difference reflects Texas Instruments' device characterization and does not indicate functional degradation. Power budget impact is negligible in typical circuit implementations.
Q: Is LM2901VQDR suitable for new designs despite extended temperature range?
A: No. LM2901VQDR is marked as obsolete and should not be selected for new designs. Although it offers extended operating temperature capability (-40°C to 125°C), obsolete status indicates production has ended and future availability cannot be guaranteed. Active alternatives such as LM2901AVQDRQ1 provide equivalent or superior performance with confirmed long-term availability.
Q: What does "Last Time Buy" status mean for LM2901AVQDRG4Q1 and LM2901QDRG4Q1?
A: Last Time Buy indicates the manufacturer has announced production discontinuation. These parts remain available for a limited period, typically 6-12 months from announcement. Existing inventory may be procured, but these parts should not be selected for new designs. Active alternatives such as LM2901AVQDRQ1 or LM2901QDRQ1 are recommended.
Q: Can I use LM2901AVQDR (non-Q1 variant) as a substitute?
A: LM2901AVQDR is functionally compatible but carries "Discontinued at DiGi Electronics" status, indicating limited availability through primary distribution channels. While electrical specifications match the BA10339F-E2 requirements, procurement risk is elevated. LM2901AVQDRQ1 (active status) is the preferred alternative.
Q: What is the significance of the "Q1" suffix in part numbers like LM2901AVQDRQ1?
A: The Q1 suffix indicates automotive-grade qualification to AEC-Q100 standard. These devices undergo enhanced reliability testing and are suitable for automotive and high-reliability applications. Non-Q1 variants (such as LM2901AVQDR) are industrial-grade equivalents without automotive qualification.
Q: Are there any electrical performance differences between Diodes and Texas Instruments comparators?
A: Input offset voltage differs: Diodes AS339 series specifies 3-5mV, while Texas Instruments LM2901 series specifies 2mV. Output current capability is higher in LM2901 (20mA vs. 16mA). These differences are within acceptable design tolerances for general-purpose comparator applications. Selection should be based on supply availability and product status rather than these minor performance variations.
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