NJM3403AM Equivalent & Substitute Parts

Part Overview

The NJM3403AM is a general-purpose operational amplifier manufactured by Nisshinbo Micro Devices Inc., configured as a 4-circuit integrated circuit in a 14-DMP surface mount package. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement.

The NJM3403AM serves applications requiring low-power, general-purpose amplification across industrial and commercial temperature ranges. The obsolete status of this component requires engineers to evaluate substitute parts that maintain electrical and mechanical compatibility with existing designs.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Slew Rate	1.2	V/µs
Gain Bandwidth Product	1.2	MHz
Current - Input Bias	70	nA
Voltage - Input Offset	2	mV
Current - Supply	3	mA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 85	°C
Mounting Type	Surface Mount	—
Package / Case	14-SOIC (0.197", 5.00mm Width)	—

Substitute Part Grouping Explanation

Substitution of the NJM3403AM is determined by the following critical parameters:

Electrical Compatibility Criteria:

Amplifier Type: General Purpose (all candidates match)
Number of Circuits: 4 (all candidates match)
Gain Bandwidth Product: 1.2 MHz (all candidates match)
Current - Output / Channel: 30 mA minimum (primary constraint)
Voltage - Supply Span: Must encompass 4 V to 36 V range or be compatible with application requirements

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount (all candidates match)
Package / Case: 14-SOIC variants (physical footprint compatibility required)

Substitution Categories:

Direct Substitutes (Identical Electrical and Mechanical Specifications):

NJM3403AM# (Nisshinbo Micro Devices Inc.) — Active product status, RoHS compliant, identical specifications

Functional Equivalents (Matching Core Electrical Parameters with Package Variations):

LM2902QDRG4Q1 (Texas Instruments) — Automotive qualified, 60 mA output capability, 14-SOIC package
LM2902QDRQ1 (Texas Instruments) — Automotive qualified, 60 mA output capability, 14-SOIC package
LM2902DRG3 (Texas Instruments) — Last Time Buy status, 14-SOIC package
LM2902NSR (Texas Instruments) — Last Time Buy status, 14-SO package variant
LM2902D (onsemi) — Automotive qualified, 14-SOIC package, obsolete status
LM2902DR (Rohm Semiconductor) — RoHS3 compliant, 14-SOIC package

Partial Equivalents (Different Electrical Characteristics):

MC3403D (STMicroelectronics) — 1 MHz bandwidth, reduced operating temperature range (0°C to 70°C)
MC3403DR (Texas Instruments) — 1 MHz bandwidth, reduced operating temperature range (0°C to 70°C)
MC3403NSR (Texas Instruments) — 1 MHz bandwidth, reduced operating temperature range (0°C to 70°C)

Parameter Comparison

Part Number	Manufacturer	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Input Offset (mV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status
NJM3403AM	Nisshinbo	1.2	1.2	70	2	3	30	4	36	-40 to 85	14-SOIC (5.00mm)	Obsolete
NJM3403AM#	Nisshinbo	1.2	1.2	70	2	3	30	4	36	-40 to 85	14-SOIC (5.00mm)	Active
LM2902QDRG4Q1	Texas Instruments	0.5	1.2	20	3	1.4	60	3	26	-40 to 125	14-SOIC (3.90mm)	Last Time Buy
LM2902QDRQ1	Texas Instruments	0.5	1.2	20	3	1.4	60	3	26	-40 to 125	14-SOIC (3.90mm)	Active
LM2902DRG3	Texas Instruments	0.5	1.2	20	3	1.4	30	3	26	-40 to 125	14-SOIC (3.90mm)	Last Time Buy
LM2902NSR	Texas Instruments	0.5	1.2	20	3	1.4	30	3	26	-40 to 125	14-SO (5.30mm)	Last Time Buy
LM2902D	onsemi	0.5	1.2	20	3	1.4	30	3	26	-40 to 125	14-SOIC (3.90mm)	Obsolete
LM2902DR	Rohm Semiconductor	0.3	1.2	20	1	1	30	3	32	-40 to 125	14-SOIC (3.90mm)	Obsolete
MC3403D	STMicroelectronics	0.5	1	40	1	2.8	30	3	36	0 to 70	14-SOIC (3.90mm)	Obsolete
MC3403DR	Texas Instruments	0.6	1	200	2	2.8	30	5	30	0 to 70	14-SOIC (3.90mm)	Active
MC3403NSR	Texas Instruments	0.6	1	200	2	2.8	30	5	30	0 to 70	14-SO (5.30mm)	Last Time Buy

Engineering Selection Recommendations

Primary Recommendation: NJM3403AM#

The NJM3403AM# from Nisshinbo Micro Devices Inc. is the direct equivalent substitute. This part maintains identical electrical specifications and mechanical packaging to the original NJM3403AM. The NJM3403AM# carries Active product status, ensuring long-term availability and supply chain stability. RoHS compliance status differs from the original (RoHS Compliant vs. RoHS non-compliant), which may require design documentation updates for regulatory compliance tracking.

Secondary Recommendations: LM2902 Series (Texas Instruments)

The LM2902QDRQ1 and LM2902QDRG4Q1 represent functionally compatible alternatives with the following considerations:

Both devices maintain the 1.2 MHz gain bandwidth product specification
Both provide enhanced output current capability (60 mA vs. 30 mA), offering design margin
Both include AEC-Q100 automotive qualification, providing additional reliability assurance
Operating temperature range extends to 125°C, exceeding the original -40°C to 85°C specification
Supply voltage maximum reduces from 36 V to 26 V, requiring verification against application requirements
Slew rate reduces from 1.2 V/µs to 0.5 V/µs, which may impact high-frequency performance
Input bias current reduces from 70 nA to 20 nA, improving input impedance characteristics

The LM2902QDRQ1 carries Active product status, ensuring continued availability. The LM2902QDRG4Q1 carries Last Time Buy status, indicating limited future availability.

Tertiary Recommendations: LM2902DRG3 and LM2902NSR (Texas Instruments)

These variants provide equivalent electrical performance to the LM2902QDRQ1 with different packaging and availability status:

LM2902DRG3: Tape & Reel packaging, Last Time Buy status
LM2902NSR: Cut Tape & Digi-Reel packaging, Last Time Buy status, 14-SO package variant (5.30mm width)

Not Recommended: MC3403 Series

The MC3403D, MC3403DR, and MC3403NSR devices exhibit reduced gain bandwidth product (1 MHz vs. 1.2 MHz) and restricted operating temperature range (0°C to 70°C vs. -40°C to 85°C). These specifications represent functional degradation relative to the NJM3403AM and are suitable only for applications with relaxed performance and temperature requirements.

Frequently Asked Questions (FAQ)

Q: Can NJM3403AM# be used as a direct replacement for NJM3403AM?

A: Yes. The NJM3403AM# is electrically and mechanically identical to the NJM3403AM. The primary difference is product status (Active vs. Obsolete) and RoHS compliance classification. Verify RoHS compliance requirements for your application before substitution.

Q: What is the key difference between NJM3403AM and LM2902QDRQ1?

A: The LM2902QDRQ1 maintains identical gain bandwidth product (1.2 MHz) and output current per channel (60 mA, exceeding the 30 mA specification). However, the maximum supply voltage reduces from 36 V to 26 V, and slew rate decreases from 1.2 V/µs to 0.5 V/µs. Verify these parameters against your circuit requirements before substitution.

Q: Are there package compatibility issues between NJM3403AM and LM2902 variants?

A: The NJM3403AM uses a 14-SOIC package with 5.00mm width. Most LM2902 variants use 14-SOIC packages with 3.90mm width. While both are SOIC packages, the physical dimensions differ. Verify PCB footprint compatibility before substitution. The LM2902NSR uses a 14-SO package with 5.30mm width, which is closer to the original footprint.

Q: Why is the MC3403 series not recommended as a substitute?

A: The MC3403 series exhibits reduced gain bandwidth product (1 MHz vs. 1.2 MHz) and restricted operating temperature range (0°C to 70°C vs. -40°C to 85°C). These represent functional degradation. Use MC3403 variants only if your application operates within the 0°C to 70°C temperature range and can tolerate 1 MHz bandwidth.

Q: What is the significance of "Last Time Buy" status?

A: Last Time Buy status indicates that the manufacturer has announced end-of-life for the product. Existing inventory may be available for a limited period, but no new production is planned. For long-term designs, select parts with Active status such as NJM3403AM# or LM2902QDRQ1.

Q: Does the LM2902QDRQ1 automotive qualification affect non-automotive applications?

A: No. AEC-Q100 qualification indicates the part meets automotive reliability standards, which exceed typical industrial requirements. Non-automotive applications benefit from this enhanced qualification without penalty.

Q: How do I verify supply voltage compatibility when substituting parts?

A: Compare the maximum supply voltage specification of the substitute part against your circuit's maximum supply voltage. The NJM3403AM supports up to 36 V, while LM2902 variants support up to 26 V. If your circuit requires operation above 26 V, LM2902 variants are not suitable. The MC3403 series supports up to 30 V or 36 V depending on variant.

Q: What is the impact of reduced slew rate on circuit performance?

A: Slew rate determines the maximum rate of output voltage change. The NJM3403AM provides 1.2 V/µs, while LM2902 variants provide 0.5 V/µs. For applications requiring fast transient response or high-frequency signal processing, verify that the reduced slew rate does not compromise performance. Calculate the maximum frequency at which slew rate limiting occurs using the formula: f_max = (Slew Rate × π) / (2 × V_peak).

Q: Are there RoHS compliance implications for substitution?

A: The original NJM3403AM is RoHS non-compliant. The NJM3403AM# is RoHS Compliant, and LM2902 variants are ROHS3 Compliant. If your design documentation or regulatory requirements mandate RoHS compliance, select compliant alternatives. If your application permits non-compliant parts, this is not a limiting factor.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message