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NJM12901D1 Equivalent & Substitute Parts
Part Overview
The NJM12901D1 is a general-purpose comparator IC manufactured by Nisshinbo Micro Devices Inc., featuring four independent comparator elements with open-collector output configuration. The device operates across a supply voltage range of 2V to 14V and is packaged in a 14-DIP through-hole format. The NJM12901D1 maintains active product status with RoHS compliance and unlimited moisture sensitivity rating, making it suitable for industrial and commercial applications requiring precision voltage comparison.
Substitute parts are necessary when the original NJM12901D1 becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when extended operating temperature ranges or enhanced electrical specifications are needed for specific application requirements.
Substiute Parts
Key Parameters
| Parameter | NJM12901D1 Specification |
|---|---|
| Number of Elements | 4 |
| Output Type | Open-Collector |
| Voltage - Supply, Single/Dual (±) | 2V ~ 14V |
| Voltage - Input Offset (Max) | 4mV @ 5V |
| Current - Input Bias (Max) | 0.2µA @ 5V |
| Current - Output (Typ) | 10mA @ 5V |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 14-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution compatibility for the NJM12901D1 is determined by the following critical parameters:
Functional Equivalence Criteria:
- Four independent comparator elements
- Open-collector output configuration
- Supply voltage range compatibility (minimum 2V ~ 14V overlap required)
- Input offset voltage within acceptable tolerance
- Input bias current specifications
- Output current capability
Packaging Compatibility Categories:
- Through-hole 14-DIP packages (direct pin-compatible substitutes)
- Surface-mount alternatives (14-SOIC, 14-SSOP, 14-CDIP) for redesigned applications
- Tube and tape-reel packaging formats
Compliance and Environmental Factors:
- RoHS compliance status
- Moisture sensitivity level
- Operating temperature range
- Product status (active vs. obsolete)
The substitute parts listed below maintain functional equivalence through matching element count, output type, and overlapping electrical specifications while offering variations in packaging format, supply voltage range, and operating temperature capabilities.
Parameter Comparison
| Parameter | NJM12901D1 | LM239N | LM239J | LM139J/PB | LM2901N/NOPB | LM339AN/NOPB | AS339MTR-E1 | BA2901FV-E2 |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Nisshinbo Micro Devices | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Diodes Incorporated | Rohm Semiconductor |
| Number of Elements | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Output Type | Open-Collector | Open-Collector | Open-Collector | Open-Collector, Open-Drain | Open-Collector | Open-Collector | Open-Collector | Open-Collector |
| Voltage - Supply (±) | 2V ~ 14V | 2V ~ 30V, ±1V ~ 15V | 2V ~ 36V, ±1V ~ 18V | 2V ~ 36V, ±1V ~ 18V | 2V ~ 36V, ±1V ~ 18V | 2V ~ 36V, ±1V ~ 18V | 2V ~ 36V, ±1V ~ 18V | 2V ~ 36V, ±1V ~ 18V |
| Voltage - Input Offset (Max) | 4mV @ 5V | 5mV @ 30V | 5mV @ 30V | 5mV @ 30V | 7mV @ 30V | 2mV @ 5V | 5mV @ 5V | 7mV @ 5V |
| Current - Input Bias (Max) | 0.2µA @ 5V | 0.25µA @ 5V | 0.25µA @ 5V | 0.1µA @ 5V | 0.25µA @ 5V | 0.25µA @ 5V | 0.25µA @ 5V | 0.25µA @ 5V |
| Current - Output (Typ) | 10mA @ 5V | 20mA | 16mA @ 5V | 16mA @ 5V | 16mA @ 5V | 16mA @ 5V | 16mA @ 5V | 16mA @ 5V |
| Operating Temperature | -40°C ~ 85°C | -25°C ~ 85°C | -25°C ~ 85°C | -55°C ~ 125°C | -40°C ~ 85°C | -25°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 125°C |
| Package / Case | 14-DIP (0.300", 7.62mm) | 14-DIP (0.300", 7.62mm) | 14-CDIP (0.300", 7.62mm) | 14-CDIP (0.300", 7.62mm) | 14-DIP (0.300", 7.62mm) | 14-DIP (0.300", 7.62mm) | 14-SOIC (0.154", 3.90mm) | 14-LSSOP (0.173", 4.40mm) |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Surface Mount | Surface Mount |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | Not Applicable | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 3 (168 Hours) | 1 (Unlimited) |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Through-Hole DIP Package Substitutes (Pin-Compatible):
LM239N and LM2901N/NOPB are direct through-hole alternatives to the NJM12901D1 in 14-DIP packaging. Both maintain active product status with ROHS3 compliance. LM239N offers extended supply voltage range (2V ~ 30V) and is suitable for applications requiring higher voltage operation. LM2901N/NOPB provides identical 14-DIP form factor with extended supply voltage capability (2V ~ 36V) and maintains the -40°C ~ 85°C operating temperature range matching the original device.
Through-Hole CDIP Package Substitutes:
LM239J and LM139J/PB are available in 14-CDIP through-hole packaging with identical 0.300" (7.62mm) pitch. LM139J/PB extends the operating temperature range to -55°C ~ 125°C and includes open-drain output capability in addition to open-collector configuration. Both devices maintain active product status and ROHS3 compliance.
Surface-Mount Alternatives:
AS339MTR-E1 (14-SOIC) and BA2901FV-E2 (14-LSSOP) provide surface-mount implementations for redesigned PCB layouts. AS339MTR-E1 offers extended supply voltage range (2V ~ 36V, ±1V ~ 18V) with active product status and ROHS3 compliance. BA2901FV-E2 extends the operating temperature range to -40°C ~ 125°C with MSL 1 rating and ROHS3 compliance, suitable for high-temperature applications.
Compliance Considerations:
All listed substitutes maintain RoHS compliance status. LM339AN/NOPB and LM339N are available from multiple manufacturers with active product status. Devices with MSL 1 rating (unlimited moisture sensitivity) are preferred for applications without controlled storage environments.
Frequently Asked Questions (FAQ)
Q: Can LM239N directly replace NJM12901D1 in existing PCB designs?
A: LM239N is pin-compatible in 14-DIP through-hole packaging and maintains the same functional configuration with four open-collector comparators. The extended supply voltage range (2V ~ 30V) encompasses the NJM12901D1 operating range (2V ~ 14V). Direct substitution is functionally compatible for applications operating within the NJM12901D1 voltage specifications.
Q: What is the difference between 14-DIP and 14-CDIP packaging?
A: Both 14-DIP and 14-CDIP packages maintain identical 0.300" (7.62mm) pitch and pin configuration for through-hole mounting. The CDIP designation indicates ceramic dual in-line package construction, while standard DIP may use plastic or ceramic materials. Pin compatibility remains identical for circuit board applications.
Q: Are surface-mount alternatives (AS339MTR-E1, BA2901FV-E2) suitable for through-hole PCB designs?
A: Surface-mount packages require different PCB layout and soldering processes than through-hole designs. AS339MTR-E1 and BA2901FV-E2 are not direct substitutes for through-hole applications without PCB redesign. These alternatives are specified for new designs utilizing surface-mount assembly processes.
Q: Which substitute offers the widest operating temperature range?
A: LM139J/PB and BA2901FV-E2 both extend the operating temperature range to -55°C ~ 125°C and -40°C ~ 125°C respectively, compared to the NJM12901D1 range of -40°C ~ 85°C. Selection depends on specific application temperature requirements and packaging format needs.
Q: What does MSL 1 (Unlimited) moisture sensitivity rating indicate?
A: MSL 1 rating indicates unlimited shelf life without moisture control requirements. Devices with this rating do not require desiccant packaging or controlled storage environments. NJM12901D1, LM239J, LM139J/PB, LM2901N/NOPB, LM339AN/NOPB, and BA2901FV-E2 all carry MSL 1 ratings, providing flexibility in inventory management and storage conditions.
Q: Can substitutes with higher output current ratings (16mA vs. 10mA) be used in existing designs?
A: Higher output current capability is a superset specification. Substitutes with 16mA typical output current (LM239N, LM239J, LM139J/PB, LM2901N/NOPB, LM339AN/NOPB, AS339MTR-E1, BA2901FV-E2) are functionally compatible with designs specified for 10mA output. The higher current rating provides additional design margin without affecting circuit operation.
Q: What is the significance of ROHS3 compliance versus RoHS compliance?
A: ROHS3 represents the current RoHS Directive 2011/65/EU implementation with updated substance restrictions. All listed substitutes maintain ROHS3 compliance, ensuring compatibility with current regulatory requirements and procurement standards. The original NJM12901D1 carries RoHS Compliant status, which is compatible with ROHS3 requirements.
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