LM2902DRG3 Equivalent & Substitute Parts

Part Overview

The LM2902DRG3 is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit device in a 14-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The LM2902DRG3 operates across a wide supply voltage range of 3V to 26V and maintains performance across industrial temperature ranges from -40°C to 125°C. Equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain resilience, and provide access to components with extended product lifecycles or improved availability.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	LM2902DRG3	—
Manufacturer	Texas Instruments	—
Category	Linear, Amplifiers	—
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Slew Rate	0.5	V/µs
Gain Bandwidth Product	1.2	MHz
Current - Input Bias	20	nA
Voltage - Input Offset	3	mV
Current - Supply (x4 Channels)	1.4	mA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	26	V
Operating Temperature	-40 to 125	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—
Product Status	Last Time Buy	—

Substitute Part Grouping Explanation

Substitution of the LM2902DRG3 is determined by strict alignment of electrical and mechanical parameters within the general-purpose operational amplifier category. The critical substitution criteria are:

Primary Compatibility Parameters:

Number of circuits: 4 (mandatory)
Package type: 14-SOIC surface mount (mandatory)
Amplifier type: General Purpose (mandatory)
Supply voltage range: Minimum 3V, Maximum ≥26V
Operating temperature range: Must encompass or exceed -40°C to 125°C
Gain bandwidth product: 1.0 MHz to 1.2 MHz range
Current output per channel: ≥30 mA
Input bias current: ≤20 nA
Input offset voltage: ≤3 mV

Regulatory Compliance:

RoHS3 compliance (mandatory)
MSL rating: 1 (Unlimited)
REACH unaffected status

Substitute parts are grouped into two categories: Direct Electrical Equivalents (matching all critical parameters within specified tolerances) and Functional Alternatives (meeting core operational requirements with minor parameter variations acceptable for most applications).

Parameter Comparison

Part Number	Manufacturer	Product Status	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
LM2902DRG3	Texas Instruments	Last Time Buy	0.5	1.2	20	3	1.4	30	3	26	-40 to 125	14-SOIC
LM2902M/NOPB	Texas Instruments	Active	—	1.0	45	2	1.5	40	3	32	-40 to 85	14-SOIC
LM2902MX/NOPB	Texas Instruments	Active	—	1.0	45	2	1.5	40	3	32	-40 to 85	14-SOIC
LM324AM/NOPB	Texas Instruments	Active	—	1.0	45	2	1.5	40	3	32	0 to 70	14-SOIC
LM324AMX/NOPB	Texas Instruments	Active	—	1.0	45	2	1.5	40	3	32	0 to 70	14-SOIC
LM324M/NOPB	Texas Instruments	Active	—	1.0	45	2	1.5	40	3	32	0 to 70	14-SOIC
LM324MX/NOPB	Texas Instruments	Active	—	1.0	45	2	1.5	40	3	32	0 to 70	14-SOIC
LP2902M/NOPB	Texas Instruments	Active	0.05	0.1	2	2	0.085	10	3	26	-40 to 85	14-SOIC
LP2902MX/NOPB	Texas Instruments	Active	0.05	0.1	2	2	0.085	10	3	26	-40 to 85	14-SOIC
BA10324AF-E2	Rohm Semiconductor	Active	0.2	0.5	20	2	0.6	35	3	32	-40 to 85	14-SOP
LM2902DR	Rohm Semiconductor	Obsolete	0.3	1.2	20	1	1.0	30	3	32	-40 to 125	14-SOIC

Engineering Selection Recommendations

Tier 1: Direct Substitutes (Preferred)

LM2902M/NOPB and LM2902MX/NOPB are the primary substitutes for LM2902DRG3. Both are manufactured by Texas Instruments with Active product status, ensuring long-term availability and supply chain stability. These parts maintain the 4-circuit general-purpose amplifier configuration in 14-SOIC packaging. The gain bandwidth product of 1.0 MHz is within acceptable tolerance of the original 1.2 MHz specification. Supply voltage range extends to 32V, exceeding the original 26V maximum. Output current per channel increases to 40 mA, providing enhanced drive capability. The primary limitation is the reduced operating temperature range (-40°C to 85°C versus -40°C to 125°C), which restricts use in high-temperature applications. Both parts are ROHS3 compliant with MSL rating of 1.

Tier 2: Functional Alternatives

LM324AM/NOPB, LM324AMX/NOPB, LM324M/NOPB, and LM324MX/NOPB are functionally equivalent general-purpose 4-circuit operational amplifiers in 14-SOIC packaging with Active product status. These parts share identical electrical specifications with LM2902M/NOPB variants. The operating temperature range is further restricted to 0°C to 70°C, limiting applicability to commercial and consumer temperature environments. These parts are suitable for applications not requiring extended temperature performance.

Tier 3: Low-Power Alternative

LP2902M/NOPB and LP2902MX/NOPB provide low-power operation with supply current of 85µA per device versus 1.4mA for the original part. These are appropriate for battery-powered or power-constrained applications. The gain bandwidth product of 100 kHz and output current of 10 mA per channel represent significant reductions in performance capability. Supply voltage range matches the original specification (3V to 26V). Operating temperature range is -40°C to 85°C. These parts are suitable only for applications with relaxed bandwidth and output current requirements.

Tier 4: Alternative Manufacturer

BA10324AF-E2 (Rohm Semiconductor) and LM2902DR (Rohm Semiconductor) provide substitution from alternative manufacturers. BA10324AF-E2 is Active with 14-SOP packaging (4.40mm width versus 3.90mm for SOIC), requiring PCB layout verification for mechanical compatibility. LM2902DR is Obsolete status, offering no supply chain advantage. Both parts are ROHS3 compliant with MSL rating of 1.

Compliance and Certification:

All recommended substitute parts maintain ROHS3 compliance and MSL rating of 1 (Unlimited moisture sensitivity). REACH unaffected status is consistent across all alternatives. ECCN classification remains EAR99 for all parts.

Frequently Asked Questions (FAQ)

Q1: Can LM2902M/NOPB directly replace LM2902DRG3 in all applications?

LM2902M/NOPB is electrically compatible with LM2902DRG3 for applications operating within -40°C to 85°C temperature range. The reduced maximum operating temperature (85°C versus 125°C) is the primary constraint. Verify application temperature requirements before substitution. Both parts are 14-SOIC surface mount packages with identical pinout and electrical characteristics within specified tolerances.

Q2: What is the difference between LM2902M/NOPB and LM2902MX/NOPB?

The primary difference is packaging format. LM2902M/NOPB is supplied in Tube packaging, while LM2902MX/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format. Electrical specifications, performance characteristics, and 14-SOIC package dimensions are identical. Selection depends on assembly process requirements and quantity needs.

Q3: Why is LM324AM/NOPB listed as a substitute if the temperature range is narrower?

LM324AM/NOPB meets the core functional requirements for general-purpose 4-circuit operational amplifier applications in 14-SOIC packaging. The narrower operating temperature range (0°C to 70°C) restricts use to commercial and consumer environments. For applications within this temperature window, LM324AM/NOPB provides equivalent performance with extended product lifecycle and superior availability.

Q4: Is BA10324AF-E2 mechanically compatible with LM2902DRG3?

BA10324AF-E2 uses 14-SOP packaging with 4.40mm width, compared to 14-SOIC with 3.90mm width for LM2902DRG3. While both are surface mount packages with 14 pins, the physical dimensions differ. PCB layout and footprint verification is required before substitution. Pin spacing and lead configuration must be confirmed for mechanical compatibility.

Q5: When should LP2902M/NOPB or LP2902MX/NOPB be selected?

LP2902 variants are appropriate for power-constrained applications such as battery-powered devices or systems with strict power budgets. Supply current of 85µA per device is significantly lower than LM2902DRG3 at 1.4mA. The trade-off is reduced gain bandwidth product (100 kHz versus 1.2 MHz) and lower output current per channel (10 mA versus 30 mA). Applications requiring high-speed signal processing or high-current output should not use LP2902 variants.

Q6: What is the significance of "Last Time Buy" status for LM2902DRG3?

Last Time Buy status indicates Texas Instruments has discontinued production of LM2902DRG3 with limited inventory remaining. Current stock of 3900 pieces will eventually deplete. Substitution to Active product status parts (LM2902M/NOPB, LM324 variants) ensures long-term design sustainability and supply chain continuity. Design migration should be planned to transition to Active alternatives.

Q7: Are all substitute parts ROHS3 compliant?

All substitute parts listed in this reference maintain ROHS3 compliance and MSL rating of 1 (Unlimited). REACH unaffected status is consistent across all alternatives. Regulatory compliance documentation is available from respective manufacturers.

Q8: What packaging options are available for LM2902 substitutes?

LM2902M/NOPB is supplied in Tube packaging. LM2902MX/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format. LM324 variants are available in both Tube and Cut Tape formats. LP2902M/NOPB is supplied in Tube; LP2902MX/NOPB is supplied in Tape & Reel (TR). Selection depends on assembly process, quantity requirements, and supply chain logistics.

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