LM2902KDBRG4 Equivalent & Substitute Parts

Part Overview

The LM2902KDBRG4 is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit device in a 14-SSOP surface-mount package. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design requirements and procurement needs. The LM2902 series provides low-power amplification suitable for general-purpose applications across industrial, consumer, and automotive domains.

Substiute Parts

LM2902KDBRG4

Texas InstrumentsIn Stock: 1220LM2902KDBRG4 Datasheet

Current PartRFQ

LM2902MT/NOPB

Texas InstrumentsIn Stock: 873LM2902MT/NOPB Datasheet

MFR RecommendedRFQ

LM2902MTX/NOPB

Texas InstrumentsIn Stock: 2934LM2902MTX/NOPB Datasheet

MFR RecommendedRFQ

BA2902FV-E2

Rohm SemiconductorIn Stock: 10315BA2902FV-E2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2902KDBRG4 is determined by the following critical parameters:

Functional Equivalence Criteria:

• Number of circuits: 4 channels required
• Amplifier type: General purpose operation
• Supply voltage range: Minimum 3V, maximum 26V or higher
• Input bias current: 20 nA or lower
• Output current per channel: 30 mA or higher
• Input offset voltage: 3 mV or lower

Package Compatibility Considerations:

• Surface-mount technology required
• 14-pin package configuration (SSOP, TSSOP, or LSSOP variants)
• Physical dimensions must accommodate existing PCB layouts

Compliance Requirements:

• RoHS3 compliance mandatory
• MSL rating of 1 (unlimited moisture sensitivity)
• REACH unaffected status

The substitute parts identified meet these criteria while accommodating variations in packaging format (Tube, Tape & Reel, Cut Tape) and minor differences in electrical performance specifications that remain within acceptable operational parameters for general-purpose amplifier applications.

Parameter Comparison

Engineering Selection Recommendations

LM2902MT/NOPB (Texas Instruments, Tube Packaging)

This substitute is an active product from the original manufacturer, providing direct functional compatibility with the obsolete LM2902KDBRG4. The 14-TSSOP package offers a smaller footprint (0.173" width versus 0.209") while maintaining identical pin configuration and electrical performance within acceptable tolerances. The maximum supply voltage extends to 32V, providing enhanced headroom for applications requiring higher voltage operation. This part is suitable for designs where packaging format flexibility and manufacturer continuity are priorities.

LM2902MTX/NOPB (Texas Instruments, Tape & Reel Packaging)

This variant provides identical electrical specifications to the LM2902MT/NOPB with Tape & Reel packaging format. The higher inventory availability (2900 pieces) supports high-volume production requirements. The 14-TSSOP package maintains the same physical dimensions and pin compatibility as the Tube variant. This configuration is appropriate for automated assembly processes and large-scale manufacturing operations.

BA2902FV-E2 (Rohm Semiconductor, Cut Tape & Digi-Reel Packaging)

This cross-manufacturer substitute from Rohm Semiconductor provides functional equivalence with notable performance characteristics. The 14-LSSOP package maintains the same 0.173" width as the TSSOP variants. The BA2902FV-E2 delivers superior power efficiency with 700µA supply current (50% reduction compared to the original part) and maintains identical input bias current (20 nA) and input offset voltage (2 mV) specifications. The operating temperature range extends to 125°C, matching the original part. This substitute is optimal for power-constrained applications and extended temperature environments. The higher inventory availability (10300 pieces) supports immediate procurement needs.

All substitute parts maintain RoHS3 compliance, MSL rating of 1, and REACH unaffected status, ensuring regulatory and environmental compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can the LM2902MT/NOPB replace the LM2902KDBRG4 in existing designs?

A: Yes. Both parts are 4-circuit general-purpose operational amplifiers with identical pin configurations and compatible electrical specifications. The primary difference is the package format: 14-TSSOP (0.173" width) versus 14-SSOP (0.209" width). PCB layout modifications are required to accommodate the narrower package width. All electrical parameters remain within acceptable substitution tolerances.

Q: What is the difference between LM2902MT/NOPB and LM2902MTX/NOPB?

A: These parts are electrically identical. The distinction is packaging format: LM2902MT/NOPB is supplied in Tube packaging, while LM2902MTX/NOPB is supplied in Tape & Reel format. Selection depends on assembly process requirements and volume production needs. Tape & Reel format is standard for automated pick-and-place assembly.

Q: Is the BA2902FV-E2 from Rohm Semiconductor fully compatible with the LM2902KDBRG4?

A: The BA2902FV-E2 provides functional equivalence as a 4-circuit general-purpose operational amplifier with identical pin configuration and compatible electrical specifications. The 14-LSSOP package has the same 0.173" width as the TSSOP variants. Key differences include lower supply current (700µA versus 1.4mA) and reduced slew rate (0.2V/µs versus 0.5V/µs). These differences are acceptable for general-purpose applications where bandwidth and slew rate are not critical performance factors.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: (1) Number of circuits (4 required), (2) Amplifier type (general purpose), (3) Supply voltage range (minimum 3V, maximum 26V or higher), (4) Input bias current (20 nA or lower), (5) Output current per channel (30 mA or higher), (6) Input offset voltage (3 mV or lower), (7) Surface-mount 14-pin package configuration, and (8) RoHS3 compliance with MSL rating of 1.

Q: Does the operating temperature range affect substitution selection?

A: The LM2902KDBRG4 operates from -40°C to 125°C. The LM2902MT/NOPB and LM2902MTX/NOPB operate from -40°C to 85°C, which is a narrower range. The BA2902FV-E2 operates from -40°C to 125°C, matching the original specification. For applications requiring full -40°C to 125°C operation, the BA2902FV-E2 is the appropriate selection.

Q: What packaging considerations apply when selecting a substitute?

A: The original LM2902KDBRG4 uses a 14-SSOP package with 0.209" width. Substitute parts use 14-TSSOP or 14-LSSOP packages with 0.173" width. This narrower footprint requires PCB layout modification. Packaging format (Tube, Tape & Reel, or Cut Tape) affects procurement and assembly processes but does not impact electrical compatibility. Verify PCB pad spacing and solder mask design accommodate the narrower package width before implementation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts (LM2902MT/NOPB, LM2902MTX/NOPB, and BA2902FV-E2) are RoHS3 compliant with MSL rating of 1 (unlimited moisture sensitivity) and REACH unaffected status, maintaining full regulatory and environmental compliance with the original specification.