LM2902KDB Equivalent & Substitute Parts

Part Overview

The LM2902KDB is a general-purpose operational amplifier manufactured by Texas Instruments, configured as a 4-circuit integrated circuit in a 14-SSOP surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. The LM2902KDB serves applications requiring low-power, general-purpose amplification across industrial, consumer, and automotive domains. Equivalent and substitute parts are necessary due to product discontinuation and to provide alternative packaging, performance, and availability options for ongoing design requirements.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Gain Bandwidth Product	1.2	MHz
Slew Rate	0.5	V/µs
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
Package / Case	14-SSOP (0.209", 5.30mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LM2902KDB is determined by strict alignment of the following critical parameters:

Mandatory Compatibility Parameters:

Amplifier Type: General Purpose
Number of Circuits: 4
Mounting Type: Surface Mount
Supply Voltage Range: Minimum 3V, Maximum ≥26V
Operating Temperature Range: Minimum -40°C, Maximum ≥125°C
RoHS3 Compliance
Moisture Sensitivity Level: 1

Performance Parameters (Secondary Consideration):

Gain Bandwidth Product: 1.0 MHz or higher
Current - Input Bias: ≤45 nA
Voltage - Input Offset: ≤3 mV
Current - Output / Channel: ≥30 mA

Substitute parts are grouped into two categories based on packaging format: Tube packaging (LM2902MT/NOPB) and Tape & Reel packaging (LM2902MTX/NOPB) from Texas Instruments, and alternative manufacturer options (BA2902FV-E2 from Rohm Semiconductor). All substitutes maintain the 4-circuit general-purpose amplifier configuration and surface mount technology, with variations in package dimensions and electrical performance specifications.

Parameter Comparison

Parameter	LM2902KDB	LM2902MT/NOPB	LM2902MTX/NOPB	BA2902FV-E2
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Rohm Semiconductor
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	4	4	4	4
Gain Bandwidth Product (MHz)	1.2	1.0	1.0	0.5
Slew Rate (V/µs)	0.5	—	—	0.2
Current - Input Bias (nA)	20	45	45	20
Voltage - Input Offset (mV)	3	2	2	2
Current - Supply (mA)	1.4	1.5	1.5	0.7
Current - Output / Channel (mA)	30	40	40	30
Voltage - Supply Span Min (V)	3	3	3	3
Voltage - Supply Span Max (V)	26	32	32	32
Operating Temperature (°C)	-40 to 125	-40 to 85	-40 to 85	-40 to 125
Package / Case	14-SSOP (5.30mm)	14-TSSOP (4.40mm)	14-TSSOP (4.40mm)	14-LSSOP (4.40mm)
Packaging Format	Tube	Tube	Tape & Reel	Cut Tape & Digi-Reel
Product Status	Last Time Buy	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1	1	1	1

Engineering Selection Recommendations

LM2902MT/NOPB (Texas Instruments, Tube Packaging)

This substitute is recommended for applications where the LM2902KDB is no longer available. The LM2902MT/NOPB maintains active product status and is supplied in Tube packaging. It operates within the same supply voltage range (3V to 32V) and temperature range (-40°C to 85°C). The maximum operating temperature of 85°C is lower than the LM2902KDB specification of 125°C; therefore, this substitute is suitable only for applications with maximum ambient temperatures not exceeding 85°C. The package footprint differs (14-TSSOP at 4.40mm versus 14-SSOP at 5.30mm), requiring PCB layout verification. All regulatory compliance requirements (ROHS3, MSL 1) are met.

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

This substitute is functionally identical to LM2902MT/NOPB but supplied in Tape & Reel format, suitable for high-volume automated assembly processes. Inventory availability is significantly higher (2900 Pcs). The same temperature and package considerations apply. This option is preferred for production environments requiring continuous supply and automated component handling.

BA2902FV-E2 (Rohm Semiconductor)

This substitute is recommended for applications requiring extended temperature operation (-40°C to 125°C) matching the LM2902KDB specification. The BA2902FV-E2 operates across a wider supply voltage range (3V to 32V) and maintains identical input bias current (20 nA) and input offset voltage (2 mV) specifications. However, the gain bandwidth product is reduced to 500 kHz and slew rate to 0.2 V/µs, making this option suitable only for applications with bandwidth requirements below 500 kHz. The package is 14-LSSOP (4.40mm width), requiring PCB layout verification. All regulatory compliance requirements are met.

Product Status Consideration

The LM2902KDB is classified as Last Time Buy with 930 Pcs in stock. All three substitute parts are classified as Active, ensuring long-term availability and continued manufacturing support. Selection should prioritize Active products for new designs and ongoing production requirements.

Frequently Asked Questions (FAQ)

Q1: Can LM2902MT/NOPB directly replace LM2902KDB in existing designs?

A: Functional replacement is possible with PCB layout verification. The LM2902MT/NOPB is electrically compatible within the specified parameter ranges. However, the package footprint differs: LM2902KDB uses 14-SSOP (5.30mm width) while LM2902MT/NOPB uses 14-TSSOP (4.40mm width). PCB traces and pad layouts must be verified for compatibility. The maximum operating temperature of 85°C must be confirmed acceptable for the application.

Q2: What is the difference between LM2902MT/NOPB and LM2902MTX/NOPB?

A: Both parts are electrically and functionally identical. The primary difference is packaging format: LM2902MT/NOPB is supplied in Tube packaging for manual or semi-automated assembly, while LM2902MTX/NOPB is supplied in Tape & Reel format for fully automated pick-and-place assembly. Selection depends on manufacturing process requirements and volume.

Q3: Is BA2902FV-E2 suitable for high-frequency applications?

A: No. The BA2902FV-E2 has a gain bandwidth product of 500 kHz, compared to 1.2 MHz for LM2902KDB and 1.0 MHz for LM2902MT/NOPB. Applications requiring bandwidth above 500 kHz must use LM2902MT/NOPB or LM2902MTX/NOPB.

Q4: Which substitute supports the full temperature range of LM2902KDB?

A: Only BA2902FV-E2 supports the full operating temperature range of -40°C to 125°C. LM2902MT/NOPB and LM2902MTX/NOPB are limited to -40°C to 85°C. For applications requiring operation above 85°C, BA2902FV-E2 is the only substitute option, provided bandwidth requirements do not exceed 500 kHz.

Q5: Are all substitutes RoHS3 compliant?

A: Yes. All three substitute parts (LM2902MT/NOPB, LM2902MTX/NOPB, and BA2902FV-E2) are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the LM2902KDB specifications.

Q6: What are the package dimension implications for PCB redesign?

A: LM2902KDB uses 14-SSOP with 5.30mm width. Both LM2902MT/NOPB and LM2902MTX/NOPB use 14-TSSOP with 4.40mm width. BA2902FV-E2 uses 14-LSSOP with 4.40mm width. The narrower packages (4.40mm) require PCB layout modifications including pad repositioning and trace routing adjustments. Existing PCB designs cannot accommodate these substitutes without layout revision.

Q7: Which substitute offers the best power efficiency?

A: BA2902FV-E2 offers the lowest supply current at 700µA (compared to 1.4mA for LM2902KDB and 1.5mA for LM2902MT/NOPB). However, this advantage is offset by reduced bandwidth (500 kHz) and slew rate (0.2 V/µs). Power efficiency selection must balance current consumption against application bandwidth requirements.

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