LM2902MX/NOPB Equivalent & Substitute Parts

Part Overview

The LM2902MX/NOPB is a general-purpose operational amplifier manufactured by Texas Instruments, featuring four independent circuits in a 14-SOIC surface-mount package. This LinCMOS™ series device operates across a wide supply voltage range of 3V to 32V and is designed for applications requiring low input bias current and moderate bandwidth performance. The part is currently in Active product status with 1499 units in stock.

Substitute parts become necessary when the primary part reaches end-of-life status, when alternative packaging formats are required for manufacturing processes, or when enhanced electrical specifications are needed for specific application requirements. The LM2902 base product family offers multiple variants across different manufacturers and package configurations to accommodate diverse design requirements.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Gain Bandwidth Product	1 MHz	MHz
Current - Input Bias	45 nA	nA
Voltage - Input Offset	2 mV	mV
Current - Supply	1.5 mA	mA
Current - Output / Channel	40 mA	mA
Voltage - Supply Span (Min)	3 V	V
Voltage - Supply Span (Max)	32 V	V
Operating Temperature	-40°C to 85°C	°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Product Status	Active	—

Substitute Part Grouping Explanation

Substitution compatibility for the LM2902MX/NOPB is determined by the following critical parameters:

Primary Substitution Criteria:

Number of circuits (must be 4)
Package type (14-SOIC or 14-SOPJ mechanical equivalents)
Supply voltage range compatibility (minimum 3V, maximum ≥30V)
Operating temperature range (minimum -40°C, maximum ≥85°C)
Mounting type (Surface Mount)
RoHS compliance status

Secondary Compatibility Factors:

Gain Bandwidth Product (1 MHz baseline; higher values acceptable)
Input bias current (45 nA baseline; lower values acceptable)
Input offset voltage (2 mV baseline; lower values acceptable)
Output current per channel (40 mA baseline; higher values acceptable)
Supply current (1.5 mA baseline; lower values acceptable)

Substitute parts are grouped into three categories based on product status and electrical performance:

Category 1: Active Status Substitutes — Direct replacements with current manufacturing support and full compliance certifications. These parts maintain or exceed the electrical specifications of the primary part.

Category 2: Last Time Buy Status Substitutes — Parts with limited remaining inventory and no future production. Suitable for applications where long-term supply is not critical.

Category 3: Obsolete Status Substitutes — Discontinued parts with available inventory. Use only when specific electrical characteristics or package formats are required and alternative active parts do not meet design constraints.

Parameter Comparison

Part Number	Manufacturer	Product Status	GBW (MHz)	Input Bias (nA)	Input Offset (mV)	Output Current (mA)	Supply Current (mA)	Temp Range (°C)	Supply Max (V)	Package	RoHS
LM2902MX/NOPB	Texas Instruments	Active	1.0	45	2	40	1.5	-40 to 85	32	14-SOIC	ROHS3
LM2902DR	Rohm Semiconductor	Obsolete	1.2	20	1	30	1.0	-40 to 125	32	14-SOIC	ROHS3
LM2902D	onsemi	Obsolete	1.2	20	3	30	1.4	-40 to 125	26	14-SOIC	Non-compliant
LM2902KAVQDR	Texas Instruments	Active	1.2	20	3	30	1.4	-40 to 125	30	14-SOIC	ROHS3
LM2902KAVQDRQ1	Texas Instruments	Active	1.2	20	3	60	1.4	-40 to 125	32	14-SOIC	ROHS3
LM2902KDR	Rohm Semiconductor	Obsolete	0.7	20	3	30	1.4	-40 to 125	26	14-SOIC	ROHS3
LM2902KNSR	Texas Instruments	Last Time Buy	1.2	20	3	30	1.4	-40 to 125	26	14-SO	ROHS3
LM2902KVQDR	Rohm Semiconductor	Obsolete	1.2	20	3	30	1.4	-40 to 125	26	14-SOIC	ROHS3
LM2902KVQDRG4	Texas Instruments	Last Time Buy	1.2	20	3	30	1.4	-40 to 125	30	14-SOIC	ROHS3
LM2902KVQDRQ1	Texas Instruments	Active	1.2	20	3	60	1.4	-40 to 125	32	14-SOIC	ROHS3
LM2902NSR	Texas Instruments	Last Time Buy	1.2	20	3	30	1.4	-40 to 125	26	14-SO	ROHS3

Engineering Selection Recommendations

For Active Product Status Requirement:

When continuous supply and manufacturer support are mandatory, select from the following Active status parts:

LM2902KAVQDR (Texas Instruments, Tape & Reel): Provides enhanced specifications with 1.2 MHz gain bandwidth product, 20 nA input bias current, and extended temperature range to 125°C. Supply voltage maximum of 30V meets the primary part requirement. ROHS3 compliant. Suitable for applications requiring improved performance over the baseline LM2902MX/NOPB.
LM2902KAVQDRQ1 (Texas Instruments, Cut Tape & Digi-Reel): Identical electrical specifications to LM2902KAVQDR with the addition of 60 mA output current per channel (versus 40 mA on primary part) and maximum supply voltage of 32V. Automotive grade with AEC-Q100 qualification. ROHS3 compliant. Recommended for applications requiring higher output drive capability and extended supply voltage range.
LM2902KVQDRQ1 (Texas Instruments, Cut Tape & Digi-Reel): Matches LM2902KAVQDRQ1 specifications. Active status with 25,400 units in stock. Automotive qualified. Preferred for new designs requiring automotive-grade components.

For Last Time Buy Consideration:

Parts with Last Time Buy status maintain full electrical specifications and compliance but have limited remaining inventory:

LM2902KNSR (Texas Instruments): 14-SO package variant with 3,722 units available. Suitable only for applications where the wider 5.30mm package width is required and inventory depletion timeline is acceptable.
LM2902KVQDRG4 (Texas Instruments): 14-SOIC package with 2,900 units. Extended temperature range to 125°C and 1.2 MHz bandwidth. Use only when supply continuity beyond current inventory is not required.
LM2902NSR (Texas Instruments): 14-SO package with 2,200 units. Similar constraints as LM2902KNSR.

For Obsolete Status Parts:

Obsolete parts should be used only when specific electrical characteristics or package formats cannot be met by Active status alternatives:

LM2902DR (Rohm Semiconductor): 90,223 units in stock. Obsolete status but highest inventory availability. Electrical specifications exceed primary part (1.2 MHz GBW, 20 nA bias current, 1 mV offset). ROHS3 compliant. Use only when supply from active manufacturers is exhausted and design timeline permits inventory depletion risk.
LM2902KVQDR (Rohm Semiconductor): 5,100 units. Obsolete status. Specifications match LM2902DR. Trophy series designation. Not recommended for new designs.
LM2902KDR (Rohm Semiconductor): 1,600 units. Obsolete status. Reduced gain bandwidth product of 700 kHz and maximum supply voltage of 26V. Use only when lower bandwidth is acceptable and 26V supply maximum is sufficient.
LM2902D (onsemi): 3,155 units. Obsolete status. RoHS non-compliant. Maximum supply voltage limited to 26V. Not recommended due to compliance status.

Packaging Considerations:

The primary part LM2902MX/NOPB uses 14-SOIC package (0.154", 3.90mm width). All recommended Active status substitutes maintain this package format. Parts designated as 14-SO (0.209", 5.30mm width) are mechanically incompatible with standard 14-SOIC PCB layouts and require design modification.

Compliance and Qualification:

All recommended Active status parts maintain ROHS3 compliance. Automotive-qualified variants (LM2902KAVQDRQ1, LM2902KVQDRQ1) carry AEC-Q100 certification and extended temperature range to 125°C, suitable for automotive and industrial applications.

Frequently Asked Questions (FAQ)

Q1: Can LM2902KAVQDRQ1 be used as a direct replacement for LM2902MX/NOPB?

A: Yes, LM2902KAVQDRQ1 is a direct replacement. Both parts feature four circuits in 14-SOIC package, surface-mount configuration, and ROHS3 compliance. LM2902KAVQDRQ1 provides enhanced specifications: 1.2 MHz gain bandwidth product (versus 1.0 MHz), 20 nA input bias current (versus 45 nA), and 60 mA output current per channel (versus 40 mA). The extended operating temperature range (-40°C to 125°C versus -40°C to 85°C) and automotive AEC-Q100 qualification provide additional design margin. Maximum supply voltage of 32V matches the primary part requirement.

Q2: What is the difference between LM2902KAVQDR and LM2902KAVQDRQ1?

A: Both parts are manufactured by Texas Instruments with identical electrical specifications: 1.2 MHz GBW, 20 nA input bias, 3 mV input offset, 1.4 mA supply current, and -40°C to 125°C operating range. The primary difference is output current per channel: LM2902KAVQDR provides 30 mA while LM2902KAVQDRQ1 provides 60 mA. Additionally, LM2902KAVQDR has maximum supply voltage of 30V, while LM2902KAVQDRQ1 extends to 32V. LM2902KAVQDRQ1 includes automotive AEC-Q100 qualification. Select LM2902KAVQDRQ1 for applications requiring higher output drive capability or automotive-grade certification.

Q3: Why is LM2902MX/NOPB listed as Active when substitute parts are Obsolete?

A: The primary part LM2902MX/NOPB remains in Active production status with 1,499 units currently in stock. However, multiple variants within the LM2902 family have reached end-of-life and transitioned to Obsolete status. This is typical for mature product families where manufacturers maintain select variants in production while discontinuing others. The availability of Active status alternatives (LM2902KAVQDR, LM2902KAVQDRQ1, LM2902KVQDRQ1) ensures design continuity without requiring substitution at this time.

Q4: Can I use LM2902DR as a substitute despite Obsolete status?

A: LM2902DR from Rohm Semiconductor is electrically compatible with LM2902MX/NOPB and offers superior specifications (1.2 MHz GBW, 20 nA bias current, 1 mV offset). With 90,223 units in stock, it has the highest inventory availability among all listed parts. However, Obsolete status means no future production. Use LM2902DR only when: (1) Active status parts are unavailable, (2) current inventory depletion timeline is acceptable, and (3) design timeline permits transition planning. For new designs, prioritize Active status parts.

Q5: What does "Last Time Buy" status mean for LM2902KNSR and LM2902KVQDRG4?

A: Last Time Buy status indicates the manufacturer has announced end-of-production with a final order deadline. After this deadline, no additional units will be manufactured. Current inventory (3,722 units for LM2902KNSR, 2,900 units for LM2902KVQDRG4) represents the final available supply. These parts are suitable for applications where: (1) existing designs require these specific variants, (2) inventory depletion timeline aligns with product lifecycle, and (3) transition to Active status alternatives has been planned. Do not select Last Time Buy parts for new designs.

Q6: Why does LM2902KDR have lower gain bandwidth product (700 kHz) than other variants?

A: LM2902KDR from Rohm Semiconductor (Trophy series) is a variant with reduced gain bandwidth product specification of 700 kHz compared to the 1.0-1.2 MHz standard across the LM2902 family. This reduced bandwidth may result from different process technology or intentional design trade-offs. LM2902KDR is Obsolete status with only 1,600 units available. Use only when: (1) application bandwidth requirements are ≤700 kHz, (2) other variants are unavailable, and (3) inventory depletion risk is acceptable.

Q7: What is the significance of the 14-SO package variant (LM2902KNSR, LM2902NSR)?

A: The 14-SO package has a width of 0.209" (5.30mm) compared to the standard 14-SOIC width of 0.154" (3.90mm). This wider package is mechanically incompatible with PCB layouts designed for standard 14-SOIC components. LM2902KNSR and LM2902NSR should be used only when: (1) existing PCB design specifically accommodates the wider 14-SO footprint, or (2) design modification is acceptable. For standard applications, use 14-SOIC package variants (LM2902KAVQDR, LM2902KAVQDRQ1, LM2902KVQDRQ1).

Q8: Is automotive AEC-Q100 qualification necessary for my application?

A: Automotive AEC-Q100 qualification is required only for components used in automotive applications or systems subject to automotive reliability standards. LM2902KAVQDRQ1 and LM2902KVQDRQ1 carry this qualification with extended temperature range (-40°C to 125°C) and enhanced reliability testing. For industrial, consumer, or non-automotive applications, standard ROHS3-compliant parts (LM2902KAVQDR) are sufficient. Automotive-qualified parts may have higher cost; select based on actual application requirements.

Q9: What is the impact of input bias current difference (45 nA vs. 20 nA)?

A: The primary part LM2902MX/NOPB specifies 45 nA input bias current, while most substitute variants specify 20 nA. Lower input bias current reduces input offset current errors and is beneficial for high-impedance input circuits. For applications with input impedances below 1 MΩ, the difference is negligible. For high-impedance applications (>10 MΩ), the 20 nA specification of substitute parts provides improved performance. This is not a limiting factor for substitution; it represents an improvement in most applications.

Q10: Can I mix different LM2902 variants in the same design?

A: Yes, different LM2902 variants can be used in the same design provided they meet the specific electrical requirements of each circuit application. However, for manufacturing consistency and supply chain management, using a single part number across all positions is recommended. If mixing variants, ensure: (1) all variants meet minimum electrical specifications for the application, (2) package types are compatible with PCB layout, (3) supply voltage and temperature ranges encompass all variants, and (4) documentation clearly identifies part number assignments to specific circuit locations.

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