NJM12903L Comparator Equivalent & Substitute Parts

Part Overview

The NJM12903L is a dual general-purpose comparator manufactured by Nisshinbo Micro Devices Inc., classified as a linear integrated circuit. This device is designated as Last Time Buy, indicating discontinued production with limited remaining inventory of 988 pieces. The NJM12903L serves as a voltage comparison circuit element in applications requiring open-collector output configuration. Identification of equivalent and substitute parts is necessary due to product discontinuation and to ensure design continuity and supply chain reliability.

Substiute Parts

NJM12903L

Nisshinbo Micro Devices Inc.In Stock: 998NJM12903L Datasheet

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AS393GTR-E1

Diodes IncorporatedIn Stock: 23179AS393GTR-E1 Datasheet

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AS393MMTR-G1

Diodes IncorporatedIn Stock: 18471AS393MMTR-G1 Datasheet

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AZV393MMTR-E1

Diodes IncorporatedIn Stock: 1127AZV393MMTR-E1 Datasheet

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BA2903SFV-E2

ROHM SemiconductorIn Stock: 6300BA2903SFV-E2 Datasheet

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LM393DT

STMicroelectronicsIn Stock: 505116LM393DT Datasheet

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LMV393IDDUR

Texas InstrumentsIn Stock: 15338LMV393IDDUR Datasheet

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LMV393IPWR

National SemiconductorIn Stock: 65296LMV393IPWR Datasheet

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LMV393MM

National SemiconductorIn Stock: 1913LMV393MM Datasheet

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LMV393MMX/NOPB

Texas InstrumentsIn Stock: 4386LMV393MMX/NOPB Datasheet

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LMV393MX

Texas InstrumentsIn Stock: 1505LMV393MX Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the NJM12903L are selected based on the following electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

• Type: General Purpose Comparator
• Number of Elements: 2 (Dual)
• Output Type: Open-Collector
• Voltage Supply Range: Compatibility with 2V ~ 36V single supply or ±1V ~ 18V dual supply
• Input Offset Voltage (Max): 5mV to 7mV @ 5V
• Input Bias Current (Max): 0.25µA @ 5V
• Output Current (Typ): 16mA to 84mA @ 5V
• Operating Temperature: -40°C ~ 85°C or wider range
• Package Type: 8-pin surface mount configurations (SOIC, TSSOP, MSOP, SSOP, VSSOP)
• RoHS3 Compliance: Required for modern supply chain compatibility

Substitute parts are grouped by manufacturer and package type while maintaining functional equivalence within the specified electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Active Status Parts:

For new designs and long-term supply assurance, select from parts with Active product status:

• AS393GTR-E1 (Diodes Incorporated, 8-TSSOP): Highest inventory availability (23,100 pcs), matching electrical specifications to NJM12903L, ROHS3 compliant, MSL 3 rating.

• LMV393IPWR (National Semiconductor, 8-TSSOP): Largest active inventory (65,220 pcs), compatible supply voltage range (2.7V ~ 5.5V subset), ROHS3 compliant, suitable for low-voltage applications.

• BA2903SFV-E2 (ROHM Semiconductor, 8-LSSOP): Extended operating temperature range (-40°C ~ 105°C), MSL 1 rating (superior moisture resistance), ROHS3 compliant, suitable for high-temperature environments.

Secondary Recommendation - Last Time Buy Parts:

• LMV393IDDUR (Texas Instruments, 8-VSSOP): Remaining inventory (15,310 pcs), Last Time Buy status, compact package option, ROHS3 compliant.

• LMV393MX (Texas Instruments, 8-SOIC): Limited inventory (1,405 pcs), Last Time Buy status, ROHS3 compliant, suitable for existing SOIC-based designs.

Compliance Considerations:

All recommended substitute parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory compatibility with modern manufacturing and supply chain requirements.

Frequently Asked Questions (FAQ)

Q1: Can AS393GTR-E1 directly replace NJM12903L in existing designs?

A: AS393GTR-E1 provides functional equivalence as a dual general-purpose comparator with open-collector output. Both devices support 2V ~ 36V single supply and ±1V ~ 18V dual supply operation. The primary design consideration is package compatibility: AS393GTR-E1 uses 8-TSSOP packaging. PCB layout modifications may be required if the original design uses a different package type.

Q2: What is the difference between LMV393IPWR and LMV393IDDUR?

A: Both are dual general-purpose comparators from the LMV393 family with identical electrical specifications (2.7V ~ 5.5V supply, 7mV input offset, 84mA output current). The primary differences are packaging (LMV393IPWR uses 8-TSSOP; LMV393IDDUR uses 8-VSSOP) and product status (LMV393IPWR is Active with 65,220 pcs inventory; LMV393IDDUR is Last Time Buy with 15,310 pcs inventory). Select based on package requirements and supply continuity needs.

Q3: Why does BA2903SFV-E2 have an extended operating temperature range?

A: BA2903SFV-E2 operates from -40°C ~ 105°C compared to the standard -40°C ~ 85°C range of most alternatives. This extended range is a specified characteristic of the ROHM BA2903 series and is suitable for applications requiring operation in elevated temperature environments. All other electrical parameters remain compatible with NJM12903L substitution requirements.

Q4: What does "Last Time Buy" status mean for LMV393IDDUR and LMV393MX?

A: Last Time Buy designation indicates that the manufacturer has discontinued production and will not accept new orders after a specified date. Existing inventory remains available for purchase, but supply is finite. For long-term design continuity, prioritize Active status parts such as AS393GTR-E1 or LMV393IPWR.

Q5: Are there package-specific considerations when selecting a substitute?

A: Yes. The NJM12903L package type is not specified in available documentation. Substitute selection must align with PCB layout and assembly capabilities:

• 8-TSSOP (AS393GTR-E1, LMV393IPWR): Standard surface-mount pitch
• 8-MSOP (AS393MMTR-G1, AZV393MMTR-E1): Narrower body width (3.00mm)
• 8-SOIC (LM393DT, LMV393MX): Wider body width (3.90mm)
• 8-VSSOP (LMV393IDDUR, LMV393MMX/NOPB): Smallest body width (2.30mm)

Verify PCB footprint compatibility before final part selection.

Q6: Which substitute offers the best supply chain security?

A: LMV393IPWR (National Semiconductor) provides the highest inventory level (65,220 pcs) with Active product status, ensuring sustained availability. AS393GTR-E1 (Diodes Incorporated) offers the second-best option with 23,100 pcs in Active status. Both parts are suitable for immediate procurement and long-term design implementation.