NJM12901M Equivalent & Substitute Parts

Part Overview

The NJM12901M is a general-purpose comparator IC manufactured by Nisshinbo Micro Devices Inc., featuring four independent comparator elements with open-collector output configuration in a 14-DMP surface-mount package. The device operates across a supply voltage range of 2V to 14V and is designed for applications requiring precision voltage comparison with low input offset voltage and minimal input bias current.

The NJM12901M is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support long-term production requirements. This reference provides direct and functional equivalents from active manufacturers.

Substiute Parts

NJM12901M

Nisshinbo Micro Devices Inc.In Stock: 1128NJM12901M Datasheet

Current PartRFQ

NJM12901M#

Nisshinbo Micro Devices Inc.In Stock: 796NJM12901M# Datasheet

DirectRFQ

AS339AMTR-G1

Diodes IncorporatedIn Stock: 21965AS339AMTR-G1 Datasheet

SimilarRFQ

AS339GTR-G1

Diodes IncorporatedIn Stock: 53121AS339GTR-G1 Datasheet

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BA10339FV-E2

Rohm SemiconductorIn Stock: 30173BA10339FV-E2 Datasheet

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LM339DT

STMicroelectronicsIn Stock: 445298LM339DT Datasheet

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LMV339IDR

Texas InstrumentsIn Stock: 35220LMV339IDR Datasheet

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LMV339IRUCR

Texas InstrumentsIn Stock: 23492LMV339IRUCR Datasheet

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LMV339M/NOPB

Texas InstrumentsIn Stock: 1153LMV339M/NOPB Datasheet

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LMV339MT/NOPB

Texas InstrumentsIn Stock: 1604LMV339MT/NOPB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the NJM12901M is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Four independent comparator elements (quad configuration)
• Open-collector output topology
• Supply voltage range compatibility with 2V ~ 14V minimum requirement
• Input offset voltage specification of 4mV or lower
• Input bias current specification of 0.2µA or lower
• Output current capability of 10mA or greater
• Operating temperature range encompassing -40°C to 85°C
• Surface-mount package configuration

Substitution Categories:

Direct Equivalent (Same Manufacturer, Different Packaging): NJM12901M# represents the same die and electrical performance as the main part, differentiated only by packaging format (Tube vs. standard packaging) and product status transition from Obsolete to Active.

Functional Equivalents (Different Manufacturers, Compatible Parameters): Parts from Diodes Incorporated (AS339 series), Rohm Semiconductor (BA10339FV-E2), STMicroelectronics (LM339DT), and Texas Instruments (LMV339 series) meet the core functional requirements. These parts maintain quad comparator configuration, open-collector output, and compatible electrical specifications within the substitution envelope.

Parameter Variance Allowances: Substitute parts may exceed the minimum supply voltage range (e.g., 2V ~ 36V vs. 2V ~ 14V), provide lower input offset voltage (e.g., 3mV vs. 4mV), or deliver higher output current (e.g., 16mA or 84mA vs. 10mA). These represent performance improvements and do not restrict substitution. Package form factors vary (14-SOIC, 14-TSSOP, 14-LSSOP, 14-QFN) but all maintain surface-mount compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: NJM12901M#

NJM12901M# is the direct equivalent of the obsolete NJM12901M, manufactured by the same supplier (Nisshinbo Micro Devices Inc.) with identical electrical specifications and performance characteristics. The primary distinction is product status transition from Obsolete to Active and RoHS compliance upgrade. This part maintains the original 14-SOIC package footprint (5.00mm width) and requires no circuit redesign. Selection of NJM12901M# is appropriate for applications requiring exact electrical and mechanical compatibility with the original design.

Secondary Recommendations: Diodes Incorporated AS339 Series

AS339AMTR-G1 (14-SOIC, 3.90mm width) and AS339GTR-G1 (14-TSSOP, 4.40mm width) are active products from Diodes Incorporated with extended supply voltage range (2V ~ 36V) and improved input offset voltage specification (3mV). Both parts maintain open-collector output configuration, quad comparator topology, and -40°C to 85°C operating temperature range. These parts are suitable for applications where package form factor flexibility is acceptable and enhanced performance specifications provide design margin.

Alternative Recommendation: Texas Instruments LMV339 Series

LMV339M/NOPB (14-SOIC) and LMV339MT/NOPB (14-TSSOP) from Texas Instruments offer significantly higher output current capability (84mA vs. 10mA) and extended operating temperature range (-40°C to 125°C). These parts are appropriate for applications requiring higher output drive capability or wider temperature operation. Supply voltage range is restricted to 2.7V ~ 5.5V, which is compatible with the original 2V ~ 14V specification at the 5V nominal operating point but does not support operation below 2.7V or above 5.5V.

Compliance Consideration: RoHS Status

All recommended substitute parts are RoHS3 compliant, addressing regulatory requirements for new designs and production. The original NJM12901M is RoHS non-compliant; transition to compliant alternatives is necessary for applications subject to RoHS directives.

Product Status Consideration:

LMV339IRUCR carries Last Time Buy status, indicating limited future availability. This part should be avoided for new designs requiring long-term component supply assurance.

Frequently Asked Questions (FAQ)

Q1: Can NJM12901M# be used as a direct replacement for NJM12901M?

A: Yes. NJM12901M# is manufactured by the same supplier (Nisshinbo Micro Devices Inc.) and provides identical electrical specifications, operating temperature range, and package footprint. The primary differences are product status (Active vs. Obsolete) and RoHS compliance status. No circuit modifications are required.

Q2: What are the key differences between NJM12901M and the Diodes Incorporated AS339 series?

A: The AS339 series maintains quad comparator configuration, open-collector output, and -40°C to 85°C operating temperature. Key differences include: extended supply voltage range (2V ~ 36V vs. 2V ~ 14V), improved input offset voltage (3mV vs. 4mV for AS339AMTR-G1), and higher output current (16mA vs. 10mA). Package form factors differ: AS339AMTR-G1 uses 14-SOIC (3.90mm width) and AS339GTR-G1 uses 14-TSSOP (4.40mm width), compared to the original 14-SOIC (5.00mm width).

Q3: Are the Texas Instruments LMV339 parts suitable replacements?

A: LMV339 parts are functionally compatible for applications operating at 5V nominal supply voltage. Advantages include significantly higher output current (84mA vs. 10mA) and extended operating temperature range (-40°C to 125°C). Limitation: supply voltage range is restricted to 2.7V ~ 5.5V, which does not support operation below 2.7V or above 5.5V. These parts are appropriate only for designs operating within this narrower voltage window.

Q4: What is the significance of package width differences (5.00mm vs. 3.90mm vs. 4.40mm)?

A: Package width affects PCB layout and component density. The original NJM12901M uses 14-SOIC with 5.00mm width. Substitute parts with 3.90mm width (AS339AMTR-G1, LMV339IDR, LMV339M/NOPB) or 4.40mm width (AS339GTR-G1, LMV339MT/NOPB) require PCB redesign if footprint compatibility is required. Pin pitch and lead configuration remain standard for all 14-pin SOIC variants, but board layout modifications may be necessary.

Q5: Which substitute part offers the best performance improvement?

A: Texas Instruments LMV339 series provides the highest output current capability (84mA vs. 10mA) and widest operating temperature range (-40°C to 125°C). Diodes Incorporated AS339 series offers extended supply voltage range (2V ~ 36V) and lower input offset voltage (3mV). Selection depends on application requirements: prioritize LMV339 for high-current output or wide temperature operation; prioritize AS339 for extended supply voltage range or improved input accuracy.

Q6: Is RoHS compliance mandatory for selecting a substitute part?

A: RoHS compliance is mandatory for applications subject to RoHS directives (EU Directive 2011/65/EU and amendments). All recommended substitute parts are RoHS3 compliant. The original NJM12901M is RoHS non-compliant and should not be used in new designs targeting RoHS-regulated markets.

Q7: Can multiple substitute parts be used interchangeably within the same design?

A: Interchangeability depends on specific application requirements. All recommended parts maintain quad comparator configuration and open-collector output topology. However, differences in supply voltage range, output current capability, and operating temperature must be evaluated against circuit requirements. Parts with different package form factors (SOIC vs. TSSOP vs. QFN) require separate PCB layouts and cannot be used interchangeably on the same board without redesign.

Q8: What is the inventory status of substitute parts?

A: NJM12901M# (696 Pcs), AS339AMTR-G1 (21,890 Pcs), AS339GTR-G1 (53,080 Pcs), BA10339FV-E2 (30,100 Pcs), LM339DT (445,200 Pcs), LMV339IDR (35,200 Pcs), LMV339IRUCR (23,400 Pcs), LMV339M/NOPB (1,078 Pcs), and LMV339MT/NOPB (1,526 Pcs) are available in stock. LM339DT and AS339GTR-G1 offer the highest inventory levels for high-volume applications.