LM2902N/PB Equivalent & Substitute Parts

Part Overview

The LM2902N/PB is a general-purpose operational amplifier featuring four independent circuits in a 14-DIP package, manufactured by Texas Instruments under the LinCMOS™ series. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The LM2902N/PB operates across a wide supply voltage range of 3V to 32V and maintains low input bias current characteristics suitable for precision analog applications.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Gain Bandwidth Product	1	MHz
Current - Input Bias	45	nA
Voltage - Input Offset	2	mV
Current - Supply	1.5	mA
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	32	V
Operating Temperature	-40 to 85	°C
Package / Case	14-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—

Substitute Part Grouping Explanation

Substitution of the LM2902N/PB is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Number of circuits: 4 independent amplifier stages
Gain bandwidth product: 1 MHz minimum
Voltage - Input Offset: 2 mV maximum
Current - Output / Channel: 40 mA minimum
Voltage - Supply Span: 3V to 32V minimum range
Operating temperature range: -40°C minimum to 85°C minimum
Package compatibility: 14-DIP or equivalent pinout-compatible package

Secondary Compatibility Factors:

Current - Input Bias: 45 nA maximum (lower values acceptable)
Current - Supply: 1.5 mA per channel (lower values acceptable)
RoHS compliance status
Product status (Active preferred over Obsolete)

Substitute parts are grouped into two categories: Direct Pin-Compatible Substitutes (identical 14-DIP package) and Functional Equivalents (alternative packages with equivalent electrical performance).

Parameter Comparison

Parameter	LM2902N/PB (TI)	LM2902N (STMicroelectronics)	LM2902N/NOPB (TI)	LM2902S14-13 (Diodes Inc.)
Manufacturer	Texas Instruments	STMicroelectronics	Texas Instruments	Diodes Incorporated
Product Status	Obsolete	Obsolete	Active	Active
Number of Circuits	4	4	4	4
Gain Bandwidth Product (MHz)	1	1	1	0.7
Current - Input Bias (nA)	45	20	45	20
Voltage - Input Offset (mV)	2	2	2	2
Current - Supply (mA)	1.5	1.5	1.5	1.0
Current - Output / Channel (mA)	40	40	40	40
Voltage - Supply Span (Min - Max)	3 - 32 V	3 - 30 V	3 - 32 V	3 - 36 V
Operating Temperature	-40 to 85°C	-40 to 125°C	-40 to 85°C	-40 to 125°C
Package / Case	14-DIP	14-DIP	14-DIP	14-SOIC
Mounting Type	Through Hole	Through Hole	Through Hole	Surface Mount
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Through-Hole PCB Designs (Preferred Direct Substitutes):

The LM2902N/NOPB (Texas Instruments, Active status) is the primary recommended substitute. This part maintains identical electrical specifications to the LM2902N/PB, operates within the same temperature range (-40°C to 85°C), and is currently in active production with ROHS3 compliance. The 14-PDIP package is mechanically and electrically compatible with existing through-hole designs. Inventory availability is substantial (19,859 pcs).

The LM2902N (STMicroelectronics, Obsolete status) provides functional equivalence with improved input bias current performance (20 nA vs. 45 nA) and extended operating temperature range (-40°C to 125°C). However, the maximum supply voltage is reduced to 30V. This part is also obsolete, limiting long-term procurement viability.

For Surface-Mount PCB Designs (Alternative Package):

The LM2902S14-13 (Diodes Incorporated, Active status) offers functional equivalence in a 14-SOIC surface-mount package. This part meets all critical electrical parameters with the exception of gain bandwidth product (0.7 MHz vs. 1 MHz) and supply current (1 mA vs. 1.5 mA per channel). The extended supply voltage range (3V to 36V) and improved operating temperature range (-40°C to 125°C) provide additional design margin. ROHS3 compliance and active production status ensure procurement continuity. This option is suitable only for new designs or PCB revisions that accommodate surface-mount technology.

Compliance and Procurement Considerations:

For applications requiring RoHS3 compliance, the LM2902N/NOPB or LM2902S14-13 are mandatory selections. The original LM2902N/PB is RoHS non-compliant. All substitute options maintain REACH Unaffected status and EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can the LM2902N/NOPB directly replace the LM2902N/PB in existing designs?

A: Yes. The LM2902N/NOPB is electrically and mechanically identical to the LM2902N/PB. Both use the 14-PDIP through-hole package with identical pinout. The primary difference is product status (Active vs. Obsolete) and packaging format (Tube vs. standard). No circuit modifications are required.

Q: What is the difference between LM2902N/PB and LM2902N/NOPB?

A: The suffix "/NOPB" indicates "No Plumbum" (lead-free) packaging, reflecting RoHS3 compliance. The "/PB" suffix indicates lead-containing solder. Electrical performance is identical. The LM2902N/NOPB is supplied in Tube packaging, while the LM2902N/PB uses standard packaging.

Q: Is the LM2902S14-13 compatible with existing through-hole PCBs designed for the LM2902N/PB?

A: No. The LM2902S14-13 uses a 14-SOIC surface-mount package, which is not compatible with through-hole PCB designs. This part requires PCB redesign or use of surface-mount adapter modules. The LM2902S14-13 is suitable only for new surface-mount designs or PCB revisions.

Q: What is the significance of the 0.7 MHz gain bandwidth product in the LM2902S14-13 compared to the 1 MHz specification of the LM2902N/PB?

A: The gain bandwidth product (GBW) defines the frequency response of the amplifier. A 0.7 MHz GBW indicates lower bandwidth capability compared to the 1 MHz specification. For applications requiring precise frequency response or high-speed signal processing, this reduction may impact performance. For general-purpose low-frequency applications, this difference is typically acceptable.

Q: Can the STMicroelectronics LM2902N substitute for the Texas Instruments LM2902N/PB?

A: Functionally, yes, with limitations. The STMicroelectronics part offers superior input bias current (20 nA vs. 45 nA) and extended operating temperature range (-40°C to 125°C). However, the maximum supply voltage is reduced to 30V (vs. 32V), and the part is classified as obsolete. For new designs, the LM2902N/NOPB is preferred.

Q: What is the MSL (Moisture Sensitivity Level) rating, and why does it matter?

A: MSL indicates moisture sensitivity during storage and handling. The LM2902N/PB and LM2902N/NOPB are rated MSL 1 (Unlimited), meaning no moisture precautions are required. The LM2902S14-13 is rated MSL 3 (168 Hours), requiring controlled storage conditions and baking procedures before reflow soldering. This affects handling and assembly procedures for surface-mount designs.

Q: Are all substitute parts REACH compliant?

A: Yes. All listed substitute parts (LM2902N/NOPB, LM2902N, and LM2902S14-13) maintain REACH Unaffected status, indicating compliance with EU chemical regulations.

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