LM2902DRE4 Equivalent & Substitute Parts

Part Overview

The LM2902DRE4 is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit device in 14-SOIC surface-mount packaging. This component is classified as obsolete, indicating discontinued production and limited availability in the original form. The LM2902DRE4 operates across a wide supply voltage range (3V to 26V) and temperature range (-40°C to 125°C), making it suitable for diverse analog signal processing applications including amplification, filtering, and signal conditioning.

Due to its obsolete status, identifying functionally equivalent and mechanically compatible substitute parts is essential for design continuity, production support, and long-term system reliability. Substitute parts must maintain electrical compatibility within the specified parameter tolerances while offering active product status and assured supply availability.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
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
Mounting Type	Surface Mount	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LM2902DRE4 is determined by strict adherence to the following electrical and mechanical criteria:

Primary Substitution Criteria:

Number of Circuits: Must be 4 (quad configuration)
Package Type: Must be 14-SOIC with 0.154" (3.90mm) width for direct PCB compatibility
Mounting Type: Surface Mount (SOIC package family)
Supply Voltage Range: Minimum 3V to 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
Input Bias Current: ≤45 nA
Input Offset Voltage: ≤3 mV
Output Current per Channel: ≥30 mA
RoHS3 Compliance: Required for regulatory alignment

Substitute Parts Identified:

LM2902M/NOPB (Texas Instruments) – Active status, LinCMOS™ series, 14-SOIC packaging
LM2902MX/NOPB (Texas Instruments) – Active status, LinCMOS™ series, 14-SOIC packaging, tape & reel
LM324AM/NOPB (Texas Instruments) – Active status, LinCMOS™ series, 14-SOIC packaging, extended availability
LM324AMX/NOPB (Texas Instruments) – Active status, LinCMOS™ series, 14-SOIC packaging, tape & reel
LM324M/NOPB (Texas Instruments) – Active status, LinCMOS™ series, 14-SOIC packaging
LM324MX/NOPB (Texas Instruments) – Active status, LinCMOS™ series, 14-SOIC packaging, tape & reel
LP2902M/NOPB (Texas Instruments) – Active status, 14-SOIC packaging, low-power variant
LP2902MX/NOPB (Texas Instruments) – Active status, 14-SOIC packaging, low-power variant, tape & reel
LM2902DR (Rohm Semiconductor) – Obsolete status, 14-SOPJ packaging, similar electrical characteristics
BA10324AF-E2 (Rohm Semiconductor) – Active status, 14-SOP packaging (4.40mm width), alternative supplier

Parameter Comparison

Parameter	LM2902DRE4	LM2902M/NOPB	LM2902MX/NOPB	LM324AM/NOPB	LM324AMX/NOPB	LP2902M/NOPB	LP2902MX/NOPB	BA10324AF-E2
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Rohm Semiconductor
Number of Circuits	4	4	4	4	4	4	4	4
Slew Rate (V/µs)	0.5	—	—	—	—	0.05	0.05	0.2
Gain Bandwidth Product (MHz)	1.2	1	1	1	1	0.1	0.1	0.5
Current - Input Bias (nA)	20	45	45	45	45	2	2	20
Voltage - Input Offset (mV)	3	2	2	2	2	2	2	2
Current - Supply (mA)	1.4	1.5	1.5	1.5	1.5	0.085	0.085	0.6
Current - Output / Channel (mA)	30	40	40	40	40	10	10	35
Voltage - Supply Span Min (V)	3	3	3	3	3	3	3	3
Voltage - Supply Span Max (V)	26	32	32	32	32	26	26	32
Operating Temperature (°C)	-40 to 125	-40 to 85	-40 to 85	0 to 70	0 to 70	-40 to 85	-40 to 85	-40 to 85
Package / Case	14-SOIC (3.90mm)	14-SOIC (3.90mm)	14-SOIC (3.90mm)	14-SOIC (3.90mm)	14-SOIC (3.90mm)	14-SOIC (3.90mm)	14-SOIC (3.90mm)	14-SOP (4.40mm)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
RoHS3 Compliance	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes

Engineering Selection Recommendations

Tier 1 – Direct Substitutes (Highest Compatibility):

LM2902M/NOPB and LM2902MX/NOPB are the primary recommended substitutes. Both are manufactured by Texas Instruments, share the identical 14-SOIC (3.90mm) package footprint, and maintain active product status with assured long-term availability. These parts feature LinCMOS™ technology and operate across the extended temperature range (-40°C to 85°C), which encompasses the lower portion of the original specification. The electrical parameters (1 MHz gain bandwidth product, 45 nA input bias current, 2 mV input offset voltage, 40 mA output current per channel) are within acceptable tolerance margins for general-purpose amplifier applications. The primary distinction between these two is packaging format: LM2902M/NOPB is supplied in tube packaging, while LM2902MX/NOPB is supplied in cut tape and digi-reel format for automated assembly.

Tier 2 – Compatible Substitutes (Extended Temperature Consideration):

LM324AM/NOPB, LM324AMX/NOPB, LM324M/NOPB, and LM324MX/NOPB are functionally equivalent quad operational amplifiers with identical electrical performance to the LM2902 series. These parts operate within a reduced temperature range (0°C to 70°C), which may not satisfy applications requiring the full -40°C to 125°C specification of the original part. Selection of these parts is appropriate only when the application's actual operating temperature range falls within 0°C to 70°C. All four variants maintain 14-SOIC (3.90mm) package compatibility and active product status.

Tier 3 – Low-Power Variants (Application-Specific):

LP2902M/NOPB and LP2902MX/NOPB are low-power operational amplifier variants suitable for battery-powered and energy-constrained applications. These parts feature significantly reduced supply current (85 µA versus 1.4 mA to 1.5 mA in standard variants) and lower output current capability (10 mA per channel versus 30 mA to 40 mA). The gain bandwidth product is reduced to 100 kHz. Selection of these parts is appropriate only when the application can tolerate reduced bandwidth and output current specifications in exchange for substantially lower power consumption. Both maintain 14-SOIC (3.90mm) package compatibility and active product status with extended temperature range (-40°C to 85°C).

Tier 4 – Alternative Supplier (Package Variation):

BA10324AF-E2 (Rohm Semiconductor) is an active-status quad operational amplifier with similar electrical characteristics. This part features a 14-SOP package with 4.40mm width, which differs from the standard 14-SOIC (3.90mm) width. PCB layout modifications are required for this substitution. The part operates across -40°C to 85°C and maintains RoHS3 compliance. Selection is appropriate when supply constraints on primary alternatives exist and PCB redesign is feasible.

Compliance and Certification:

All recommended substitute parts maintain ROHS3 compliance, MSL Level 1 (unlimited moisture sensitivity), REACH unaffected status, and EAR99 export classification, ensuring regulatory alignment with the original LM2902DRE4 specification.

Frequently Asked Questions (FAQ)

Q1: Can LM2902M/NOPB be used as a direct replacement for LM2902DRE4 without PCB modifications?

A: Yes. Both parts share identical 14-SOIC (0.154", 3.90mm width) package geometry, pin configuration, and functional behavior. No PCB layout modifications are required. The primary difference is product status: LM2902M/NOPB is active with assured supply, while LM2902DRE4 is obsolete.

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

A: Both parts are electrically identical. The difference is packaging format: LM2902M/NOPB is supplied in tube packaging for manual handling, while LM2902MX/NOPB is supplied in cut tape and digi-reel format optimized for automated pick-and-place assembly. Select based on manufacturing process requirements.

Q3: Why do LM324AM/NOPB and LM324AMX/NOPB have a reduced operating temperature range (0°C to 70°C) compared to the original LM2902DRE4 (-40°C to 125°C)?

A: The LM324 series is specified for commercial temperature range (0°C to 70°C), while the LM2902 series is specified for industrial temperature range (-40°C to 125°C). These are distinct product grades. Use LM324 variants only if your application operates within 0°C to 70°C. For full -40°C to 125°C coverage, use LM2902M/NOPB or LM2902MX/NOPB.

Q4: Can LP2902M/NOPB replace LM2902DRE4 in all applications?

A: No. LP2902M/NOPB is a low-power variant with reduced gain bandwidth product (100 kHz versus 1.2 MHz) and lower output current per channel (10 mA versus 30 mA). Use LP2902M/NOPB only in applications where reduced bandwidth and output current are acceptable in exchange for significantly lower power consumption (85 µA versus 1.4 mA).

Q5: What are the implications of using BA10324AF-E2 as a substitute?

A: BA10324AF-E2 has a 14-SOP package with 4.40mm width, compared to the standard 14-SOIC (3.90mm) width. This package variation requires PCB layout modifications and cannot be used as a drop-in replacement. Use BA10324AF-E2 only when primary alternatives are unavailable and PCB redesign is feasible.

Q6: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts (LM2902M/NOPB, LM2902MX/NOPB, LM324AM/NOPB, LM324AMX/NOPB, LM324M/NOPB, LM324MX/NOPB, LP2902M/NOPB, LP2902MX/NOPB, and BA10324AF-E2) maintain ROHS3 compliance, ensuring regulatory alignment with the original LM2902DRE4.

Q7: Which substitute part offers the best long-term supply availability?

A: LM324AMX/NOPB and LM324MX/NOPB offer the highest inventory levels (36,756 and 50,513 units respectively) among active substitutes, indicating strong supply continuity. However, these parts operate within 0°C to 70°C temperature range. For extended temperature range (-40°C to 85°C) with strong availability, LM2902MX/NOPB (1,499 units) is recommended.

Q8: Can the LM2902DRE4 be used interchangeably with LM2902DR (Rohm Semiconductor)?

A: LM2902DR shares the same base product number and similar electrical characteristics but uses 14-SOPJ packaging instead of 14-SOIC. Additionally, LM2902DR is classified as obsolete. While electrical compatibility exists, package differences prevent direct PCB substitution. This part is not recommended for new designs.

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