LM2902PWRG3 Equivalent & Substitute Parts

Part Overview

The LM2902PWRG3 is a general-purpose operational amplifier manufactured by Texas Instruments, featuring four independent circuits in a 14-TSSOP surface-mount package. This device is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. The LM2902PWRG3 operates across a wide supply voltage range (3V to 26V) and temperature range (-40°C to 125°C), making it suitable for general-purpose analog signal processing applications.

Substitute parts are necessary due to the Last Time Buy status of the LM2902PWRG3. Alternative equivalent devices provide continued design support, extended product lifecycles, and access to active inventory from multiple manufacturers including Texas Instruments, Rohm Semiconductor, and onsemi.

Key Parameters

Parameter	Value	Unit
Manufacturer	Texas Instruments	—
Part Number	LM2902PWRG3	—
Category	Linear, Amplifiers	—
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Package / Case	14-TSSOP (0.173", 4.40mm 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 eligibility for the LM2902PWRG3 is determined by the following critical parameters:

Primary Substitution Criteria:

Number of Circuits: 4 (all substitutes must have 4 independent amplifier circuits)
Package Type: 14-TSSOP or compatible 14-pin surface-mount packages
Mounting Type: Surface Mount
Supply Voltage Range: Minimum 3V, Maximum ≥26V
Operating Temperature Range: Must encompass or exceed -40°C to 125°C
Gain Bandwidth Product: 1 MHz or higher
Current - Output / Channel: ≥30 mA

Secondary Compatibility Parameters:

Input Bias Current: ≤90 nA
Input Offset Voltage: ≤3 mV
RoHS3 Compliance: Required
MSL Rating: 1 (Unlimited)

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

Category A - Direct Electrical Equivalents (Active Status): LM2902MTX/NOPB, LM2902VDTBR2G, LM2902DTBR2G, LM324MTX/NOPB, LM324MT/NOPB

These devices maintain the 4-circuit configuration, 14-TSSOP package, and meet all primary electrical criteria. All are currently in active production status with extended inventory availability.

Category B - Functional Equivalents (Obsolete or Alternative Package): LM2902PWR, LM2902PT, BA2902SFV-E2, BA10324AFV-E2

These devices provide functional equivalence with 4 circuits and compatible electrical performance. Some are classified as Obsolete but remain available in inventory. BA-series parts use 14-SSOP-B package variant, which is mechanically compatible with 14-TSSOP footprints.

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 Max (V)	Temp Range (°C)	Package
LM2902PWRG3	Texas Instruments	Last Time Buy	0.5	1.2	20	3	1.4	30	26	-40 to 125	14-TSSOP
LM2902MTX/NOPB	Texas Instruments	Active	—	1	45	2	1.5	40	32	-40 to 85	14-TSSOP
LM2902MT/NOPB	Texas Instruments	Active	—	1	45	2	1.5	40	32	-40 to 85	14-TSSOP
LM2902VDTBR2G	onsemi	Active	—	1	90	2	—	40	32	-40 to 125	14-TSSOP
LM2902DTBR2G	onsemi	Active	—	1	90	2	—	40	32	-40 to 105	14-TSSOP
LM2902PWR	Rohm Semiconductor	Obsolete	0.3	1.2	20	3	1.4	30	26	-40 to 125	14-TSSOP
LM2902PT	Rohm Semiconductor	Obsolete	0.3	1.3	20	1	1	30	32	-40 to 125	14-TSSOP
LM324MTX/NOPB	Texas Instruments	Active	—	1	45	2	1.5	40	32	0 to 70	14-TSSOP
LM324MT/NOPB	Texas Instruments	Active	—	1	45	2	1.5	40	32	0 to 70	14-TSSOP
BA2902SFV-E2	Rohm Semiconductor	Active	0.2	0.5	20	2	0.7	30	32	-40 to 105	14-SSOP-B
BA10324AFV-E2	Rohm Semiconductor	Active	0.2	0.5	20	2	0.6	35	32	-40 to 85	14-SSOP-B

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

LM2902MTX/NOPB and LM2902MT/NOPB (Texas Instruments, Active Status) are the primary recommended substitutes. Both maintain the 14-TSSOP package, 4-circuit configuration, and are in active production. These devices provide superior supply voltage range (32V maximum vs. 26V) and higher output current capability (40 mA vs. 30 mA). The trade-off is a reduced operating temperature maximum of 85°C compared to the original 125°C specification.

For Extended Temperature Range Applications:

LM2902VDTBR2G (onsemi, Active Status) maintains the full -40°C to 125°C operating range while providing 32V maximum supply voltage and 40 mA output current. Input bias current is higher at 90 nA (within acceptable limits). This device is recommended for applications requiring the original temperature specification.

For Inventory Continuity:

LM2902PWR (Rohm Semiconductor, Obsolete) and LM2902PT (Rohm Semiconductor, Obsolete) provide electrical equivalence with 9,054 and 5,990 units respectively in current inventory. These are suitable for near-term production requirements before transitioning to active-status alternatives.

For Cost-Optimized Designs:

BA2902SFV-E2 (Rohm Semiconductor, Active Status) offers lower supply current (700 µA vs. 1.4 mA) and extended temperature range (-40°C to 105°C). The 14-SSOP-B package is mechanically compatible with 14-TSSOP footprints. Gain bandwidth product is reduced to 500 kHz, suitable for applications not requiring 1 MHz performance.

For Industrial Temperature Range:

LM324MTX/NOPB and LM324MT/NOPB (Texas Instruments, Active Status) are suitable only for applications with 0°C to 70°C operating requirements. These devices are not recommended for the original -40°C to 125°C specification.

All recommended substitutes maintain ROHS3 compliance, MSL 1 rating, and EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can LM2902MTX/NOPB directly replace LM2902PWRG3 in existing designs?

A: LM2902MTX/NOPB is electrically compatible for most applications. The primary difference is the reduced maximum operating temperature (85°C vs. 125°C). If your application operates within 0°C to 85°C, this substitute is fully compatible. The 14-TSSOP package is identical, and all electrical parameters meet or exceed the original specification. Verify your application's maximum operating temperature before selection.

Q: What is the difference between 14-TSSOP and 14-SSOP-B packages?

A: Both packages are 14-pin surface-mount devices with 0.173" width and 4.40mm body width. The SSOP-B variant (used in BA-series parts) has slightly different lead geometry but is mechanically compatible with 14-TSSOP PCB footprints. Consult your PCB layout tool to confirm footprint compatibility before design implementation.

Q: Why do some substitute parts have higher input bias current (90 nA vs. 20 nA)?

A: Input bias current variation is within acceptable limits for general-purpose amplifier applications. The LM2902VDTBR2G and LM2902DTBR2G specify 90 nA maximum, which remains suitable for most signal conditioning and filtering applications. Applications requiring ultra-low input bias current should select LM2902PWR, LM2902PT, or BA2902SFV-E2 (all 20 nA maximum).

Q: Is LM324 a suitable substitute for LM2902PWRG3?

A: LM324 devices (LM324MTX/NOPB, LM324MT/NOPB) are functionally equivalent 4-circuit operational amplifiers in 14-TSSOP packages. However, the operating temperature range is limited to 0°C to 70°C, which does not meet the original -40°C to 125°C specification. LM324 substitutes are suitable only for commercial-temperature applications.

Q: What is the significance of "Last Time Buy" status?

A: Last Time Buy indicates that Texas Instruments has discontinued production of LM2902PWRG3 and will not accept new orders after a specified date. Current inventory (9,054 units) represents the final available stock. Designs should transition to active-status alternatives such as LM2902MTX/NOPB or LM2902VDTBR2G to ensure long-term supply continuity.

Q: Can I use BA2902SFV-E2 in high-frequency applications?

A: BA2902SFV-E2 has a gain bandwidth product of 500 kHz, which is half that of the original LM2902PWRG3 (1.2 MHz). This device is suitable for applications with bandwidth requirements up to 500 kHz. For applications requiring 1 MHz or higher bandwidth, select LM2902MTX/NOPB, LM2902VDTBR2G, or LM2902PT instead.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this document are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. All devices are suitable for lead-free soldering processes and meet environmental compliance requirements.

Q: What is the recommended substitute for applications requiring -40°C to 125°C operation?

A: LM2902VDTBR2G (onsemi, Active Status) is the primary recommendation. This device maintains the full -40°C to 125°C operating range, provides 32V maximum supply voltage, and 40 mA output current per channel. Alternative options include LM2902PWR and LM2902PT (both Rohm Semiconductor, Obsolete status), which are available in current inventory but have limited long-term availability.

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