BA2902F-E2 Equivalent & Substitute Parts

Part Overview

The BA2902F-E2 is a general purpose operational amplifier integrated circuit manufactured by Rohm Semiconductor. This device contains four independent amplifier circuits in a 14-pin surface mount package and is designed for applications requiring low-power, general-purpose amplification. The BA2902F-E2 is currently in active product status with 5300 units in stock.

Substitute parts are necessary when the primary device becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for compatible alternatives from different manufacturers. The substitute parts listed maintain functional equivalence through matching circuit count, package type compatibility, and electrical parameter alignment.

Key Parameters

Parameter	BA2902F-E2 Value
Manufacturer	Rohm Semiconductor
Amplifier Type	General Purpose
Number of Circuits	4
Package / Case	14-SOIC (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Slew Rate	0.2 V/µs
Gain Bandwidth Product	500 kHz
Current - Input Bias	20 nA
Voltage - Input Offset	2 mV
Current - Supply	700 µA
Current - Output / Channel	30 mA
Voltage - Supply Span (Min)	3 V
Voltage - Supply Span (Max)	32 V
Operating Temperature	-40°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution compatibility for the BA2902F-E2 is determined by the following critical parameters:

Circuit Configuration: All substitute parts must contain four independent amplifier circuits to maintain functional equivalence in multi-stage amplification designs.

Package Compatibility: The BA2902F-E2 uses a 14-SOIC surface mount package. Substitute parts must use compatible 14-pin SOIC or 14-SOP packages to ensure PCB footprint compatibility and automated assembly process alignment.

Electrical Performance Envelope: Substitute parts must operate within the specified supply voltage range (3 V to 32 V minimum), maintain input bias current specifications at or below 20 nA, and support output current delivery of at least 30 mA per channel.

Environmental Specifications: All substitute parts must support the operating temperature range of -40°C to 125°C or a subset thereof, maintain RoHS3 compliance, and have unlimited moisture sensitivity rating (MSL 1).

Regulatory Compliance: All substitute parts must maintain ROHS3 compliance and REACH unaffected status to ensure regulatory alignment with the original component.

The substitute parts are grouped into two categories based on product status: active production parts suitable for new designs and legacy parts available for existing inventory requirements.

Parameter Comparison

Parameter	BA2902F-E2	AS324MTR-G1	LM124D	LM124DG4	LM124DR	LM124DRG4	LM224AD	LM224ADR	LM224ADRG4	LM224D	LM224DR
Manufacturer	Rohm	Diodes Inc.	STMicro	TI	TI	TI	STMicro	TI	TI	STMicro	UMW
Number of Circuits	4	4	4	4	4	4	4	4	4	4	4
Package / Case	14-SOIC (0.173")	14-SOIC (0.154")	14-SOIC (0.154")	14-SOIC (0.154")	14-SOIC (0.154")	14-SOIC (0.154")	14-SOIC (0.154")	14-SOIC (0.154")	14-SOIC (0.154")	14-SOIC (0.154")	14-SOIC (0.154")
Slew Rate (V/µs)	0.2	—	0.4	0.5	0.5	0.5	0.4	0.5	0.5	0.4	0.5
Gain Bandwidth Product (kHz)	500	—	1200	1200	1200	1200	1200	1200	1200	1200	1200
Current - Input Bias (nA)	20	20	20	20	20	20	20	15	15	20	20
Voltage - Input Offset (mV)	2	2	2	3	3	3	2	2	2	2	3
Current - Supply (µA)	700	1000	1500	1400	1400	1400	1500	1400	1400	1500	700
Current - Output / Channel (mA)	30	40	30	30	30	30	30	30	30	40	30
Voltage - Supply Span Min (V)	3	3	3	3	3	3	3	3	3	3	3
Voltage - Supply Span Max (V)	32	36	30	30	30	30	30	30	30	30	32
Operating Temperature (°C)	-40 ~ 125	-40 ~ 85	-55 ~ 125	-55 ~ 125	-55 ~ 125	-55 ~ 125	-40 ~ 105	-25 ~ 85	-25 ~ 85	-40 ~ 105	-20 ~ 85
RoHS Status	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3
Product Status	Active	Active	Obsolete	Last Time Buy	Active	Discontinued	Obsolete	Active	Obsolete	Active	Active

Engineering Selection Recommendations

For Active Production Designs: The AS324MTR-G1 (Diodes Incorporated), LM124DR (Texas Instruments), LM224ADR (Texas Instruments), LM224D (STMicroelectronics), and LM224DR (UMW) are recommended as primary substitutes. These parts maintain active product status and ensure long-term availability for manufacturing continuity.

For Extended Temperature Range Applications: The BA2902F-E2 and LM124D support the full -40°C to 125°C operating range. The LM124DG4 and LM124DR extend the lower temperature limit to -55°C, providing enhanced performance in extreme cold environments. Applications requiring temperatures above 85°C should prioritize the BA2902F-E2, LM124D, LM124DG4, LM124DR, LM224AD, or LM224D.

For Maximum Supply Voltage Tolerance: The AS324MTR-G1 supports supply voltages up to 36 V, exceeding the BA2902F-E2 specification of 32 V. The BA2902F-E2 and LM224DR both support 32 V maximum supply voltage. All other substitutes are limited to 30 V maximum.

For Low-Power Supply Current Applications: The BA2902F-E2 and LM224DR both specify 700 µA supply current, the lowest among all listed parts. The AS324MTR-G1 specifies 1000 µA, while LM124 and LM224 variants specify 1400 to 1500 µA.

For Output Current Capability: The AS324MTR-G1 and LM224D both support 40 mA output current per channel, exceeding the BA2902F-E2 specification of 30 mA. All other substitutes maintain the 30 mA specification.

For Regulatory Compliance: All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original BA2902F-E2 component.

For Legacy System Support: Parts with obsolete or last-time-buy status (LM124D, LM124DG4, LM224AD, LM224ADRG4) should be used only for maintenance and repair of existing systems. New designs should avoid these parts due to limited future availability.

Frequently Asked Questions (FAQ)

Q: Can the AS324MTR-G1 directly replace the BA2902F-E2 on existing PCBs?

A: The AS324MTR-G1 uses a 14-SOIC package with 0.154" width compared to the BA2902F-E2's 0.173" width. While both are 14-pin SOIC packages, the physical dimensions differ. PCB footprint compatibility must be verified before substitution. The narrower AS324MTR-G1 may fit on a BA2902F-E2 footprint, but this requires design validation.

Q: What is the primary difference between LM124 and LM224 series parts?

A: The LM124 series supports differential output configuration and extended temperature range (-55°C to 125°C), while the LM224 series provides standard output configuration with more limited temperature ranges. Both contain four circuits and are compatible with the BA2902F-E2 in terms of circuit count and basic electrical specifications.

Q: Are there any slew rate limitations when substituting the BA2902F-E2?

A: The BA2902F-E2 specifies 0.2 V/µs slew rate. Most substitute parts (LM124D, LM124DG4, LM124DR, LM224ADR, LM224ADRG4, LM224D, LM224DR) specify 0.4 to 0.5 V/µs, which is faster. The AS324MTR-G1 does not specify slew rate. Faster slew rates are generally compatible with designs requiring the BA2902F-E2 slew rate, but applications sensitive to slew rate performance should verify compatibility.

Q: Which substitute part has the lowest input bias current?

A: The LM224ADR and LM224ADRG4 both specify 15 nA input bias current, which is lower than the BA2902F-E2's 20 nA specification. All other parts maintain the 20 nA specification. Lower input bias current reduces input offset current effects in high-impedance applications.

Q: Can I use LM224DR as a substitute if my design requires -40°C operation?

A: The LM224DR specifies an operating temperature range of -20°C to 85°C, which does not include -40°C. For applications requiring -40°C operation, use the BA2902F-E2, LM124D, LM124DG4, LM124DR, LM224AD, or LM224D instead.

Q: What is the difference between cut tape and tube packaging?

A: Cut tape (CT) and Digi-Reel packaging are suitable for automated pick-and-place assembly equipment. Tube packaging is typically used for manual assembly or lower-volume applications. The BA2902F-E2 is available in cut tape format. Substitute parts are available in multiple packaging formats; verify that your assembly process supports the selected packaging type.

Q: Is the LM224ADRG4 suitable for new product designs?

A: The LM224ADRG4 has obsolete product status, indicating it is no longer in active production. New product designs should use active status parts such as LM224ADR, LM224D, or LM224DR to ensure long-term component availability and manufacturing support.

Q: What is the significance of the "G4" suffix in part numbers like LM124DG4?

A: The "G4" suffix indicates a specific packaging or tape configuration variant. Parts with and without the G4 suffix may have different packaging formats or reel specifications. Verify packaging compatibility with your assembly equipment before substitution.

Q: Can I substitute the BA2902F-E2 with a part that has higher gain bandwidth product?

A: Yes. The BA2902F-E2 specifies 500 kHz gain bandwidth product. Substitute parts with higher gain bandwidth product (1200 kHz for LM124 and LM224 series) are compatible and provide improved frequency response. However, higher bandwidth may introduce increased noise in some applications; verify performance in your specific circuit design.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original BA2902F-E2 component for use in regulated markets and applications.

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