BA3404FJ-GE2 Equivalent & Substitute Parts

Part Overview

The BA3404FJ-GE2 is a general purpose operational amplifier manufactured by Rohm Semiconductor, configured as a dual-channel (2 circuit) device in an 8-SOIC surface mount package. This part features push-pull output configuration and operates across a wide supply voltage range of 4V to 36V. The BA3404FJ-GE2 is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. Substitute parts must maintain functional compatibility while meeting the same electrical performance envelope and package specifications.

Key Parameters

Parameter	BA3404FJ-GE2 Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Push-Pull	—
Slew Rate	1.2	V/µs
Gain Bandwidth Product	1.2	MHz
Current - Input Bias	70	nA
Voltage - Input Offset	2	mV
Current - Supply	2	mA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 85	°C
Mounting Type	Surface Mount	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BA3404FJ-GE2 are evaluated based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

Number of Circuits: Must be 2 (dual-channel configuration)
Package / Case: Must be 8-SOIC (0.154", 3.90mm Width) for mechanical and electrical compatibility
Mounting Type: Must be Surface Mount
Voltage - Supply Span: Minimum 4V to maximum 36V (or compatible subset)
Operating Temperature: Must support -40°C to 85°C range or extended range

Secondary Performance Parameters:

Slew Rate: 1.2 V/µs or greater
Gain Bandwidth Product: 1.2 MHz or greater
Current - Input Bias: 70 nA or lower
Voltage - Input Offset: 2 mV or lower
Current - Supply: 2 mA or lower per device
Current - Output / Channel: 30 mA or greater

Substitute parts are grouped into two categories: direct general purpose amplifier substitutes (BA3472FJ-GE2, AS358MTR-E1, AS358MTR-G1, LM1458M/NOPB, LM1458MX/NOPB, LM158DT, LM258D) and J-FET amplifier alternatives (ADA4062-2ARZ, ADA4062-2ARZ-R7, ADA4062-2BRZ) that offer superior input bias current performance at the cost of higher minimum supply voltage requirements.

Parameter Comparison

Parameter	BA3404FJ-GE2	BA3472FJ-GE2	ADA4062-2ARZ	ADA4062-2ARZ-R7	ADA4062-2BRZ	AS358MTR-E1	AS358MTR-G1	LM1458M/NOPB	LM1458MX/NOPB	LM158DT	LM258D
Amplifier Type	General Purpose	General Purpose	J-FET	J-FET	J-FET	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Slew Rate (V/µs)	1.2	10	3.3	3.3	3.3	—	—	0.5	0.5	0.6	0.6
Gain Bandwidth Product (MHz)	1.2	4	1.4	1.4	1.4	—	—	1	1	1.1	1.1
Current - Input Bias (nA)	70	100	0.002	0.002	0.002	20	20	200	200	20	20
Voltage - Input Offset (mV)	2	1.5	0.00075	0.00075	0.0005	2	2	1	1	5	5
Current - Supply (mA)	2	4	0.165	0.165	0.165	0.7	0.7	3	3	0.7	0.7
Current - Output / Channel (mA)	30	30	20	20	20	40	40	—	—	40	40
Voltage - Supply Span Min (V)	4	3	8	8	8	3	3	36	36	3	3
Voltage - Supply Span Max (V)	36	36	36	36	36	36	36	36	36	30	30
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 125	-40 to 125	-40 to 125	-40 to 85	-40 to 85	0 to 70	0 to 70	-55 to 125	-40 to 105
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct General Purpose Substitutes (Recommended Primary Options):

The BA3472FJ-GE2 from Rohm Semiconductor is the closest functional equivalent, maintaining the same manufacturer lineage and package configuration. It offers superior performance with 10 V/µs slew rate and 4 MHz gain bandwidth product while supporting the full 3V to 36V supply range. This part is active and ROHS3 compliant.

The AS358MTR-E1 and AS358MTR-G1 (Diodes Incorporated) provide general purpose amplification with enhanced output current capability (40 mA per channel) and lower input bias current (20 nA). Both variants support 3V to 36V operation and are available in high inventory quantities. These parts differ only in packaging format (Cut Tape & Digi-Reel versus Tape & Reel).

The LM158DT (STMicroelectronics) offers automotive-grade qualification (AEC-Q100) with extended temperature range (-55°C to 125°C) and is suitable for applications requiring automotive reliability standards. Supply voltage is limited to 3V to 30V maximum.

The LM258D (STMicroelectronics) provides similar performance to LM158DT with standard industrial temperature range (-40°C to 105°C) and 3V to 30V supply operation.

The LM1458M/NOPB and LM1458MX/NOPB (Texas Instruments and National Semiconductor respectively) are legacy general purpose amplifiers with lower slew rate (0.5 V/µs) and fixed 36V supply requirement. These are suitable only for applications with relaxed bandwidth requirements.

J-FET Alternative Options (Low Input Bias Current Applications):

The ADA4062-2ARZ, ADA4062-2ARZ-R7, and ADA4062-2BRZ (Analog Devices Inc.) are J-FET input amplifiers offering exceptional input bias current performance (2 pA) and extended operating temperature range (-40°C to 125°C). These parts require minimum 8V supply voltage and deliver lower output current (20 mA per channel). The ADA4062-2BRZ variant features tighter input offset voltage specification (500 µV). The ADA4062-2ARZ-R7 variant is available in significantly higher inventory (17,915 units).

Compliance and Certification Status:

All recommended substitute parts are ROHS3 compliant and REACH unaffected. The LM158DT carries AEC-Q100 automotive qualification. All parts maintain MSL rating of 1 (unlimited moisture sensitivity) or MSL 3 (168 hours), consistent with industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can the BA3472FJ-GE2 directly replace the BA3404FJ-GE2 without circuit modifications?

A: The BA3472FJ-GE2 is mechanically and electrically compatible as a direct replacement. Both devices are housed in 8-SOIC packages with identical pinouts and support the same 3V to 36V supply range. The BA3472FJ-GE2 offers improved performance specifications (higher slew rate and gain bandwidth product) and is active in production, making it the preferred substitute for the obsolete BA3404FJ-GE2.

Q: What is the key difference between general purpose and J-FET amplifier substitutes?

A: General purpose amplifiers (BA3472FJ-GE2, AS358 series, LM158/LM258 series) use bipolar input stages with input bias currents in the range of 20 to 200 nanoamperes. J-FET amplifiers (ADA4062 series) use field-effect transistor input stages with input bias currents in the picoampere range (2 pA), making them suitable for high-impedance signal sources and applications requiring minimal input loading. J-FET devices require higher minimum supply voltages (8V minimum versus 3V to 4V for general purpose types).

Q: Are there packaging format differences among the substitute parts?

A: All substitute parts are housed in 8-SOIC (0.154", 3.90mm Width) surface mount packages, ensuring mechanical compatibility with the BA3404FJ-GE2 footprint. Packaging format variations (Cut Tape, Digi-Reel, Tube, Tape & Reel) refer to supply and handling methods only and do not affect electrical or mechanical performance. Selection should be based on procurement and assembly requirements.

Q: Which substitute part offers the best performance for high-speed applications?

A: The BA3472FJ-GE2 provides the highest slew rate (10 V/µs) and gain bandwidth product (4 MHz) among general purpose substitutes, making it optimal for applications requiring fast signal response and wider bandwidth. For applications requiring both high speed and extremely low input bias current, the ADA4062 series J-FET amplifiers offer 3.3 V/µs slew rate and 1.4 MHz bandwidth with 2 pA input bias current.

Q: What is the operating temperature range limitation for the LM1458 series?

A: The LM1458M/NOPB and LM1458MX/NOPB are specified for 0°C to 70°C operating temperature, which is narrower than the BA3404FJ-GE2 range of -40°C to 85°C. These parts are suitable only for applications operating within the 0°C to 70°C window and should not be selected for designs requiring full -40°C to 85°C temperature coverage.

Q: Can the ADA4062 J-FET amplifiers operate at 4V supply voltage like the BA3404FJ-GE2?

A: No. The ADA4062 series requires a minimum supply voltage of 8V, making them incompatible with applications designed for 4V to 7V operation. The BA3472FJ-GE2, AS358 series, and LM258D support operation down to 3V and are appropriate substitutes for low-voltage applications.

Q: What is the significance of the ADA4062-2BRZ variant with 500 µV input offset voltage?

A: The ADA4062-2BRZ features a tighter input offset voltage specification (500 µV) compared to the ADA4062-2ARZ and ADA4062-2ARZ-R7 variants (750 µV). This tighter specification is beneficial for precision analog applications requiring minimal DC offset errors. All three ADA4062 variants are otherwise electrically identical.

Q: Is the LM158DT automotive qualification relevant for non-automotive applications?

A: The LM158DT carries AEC-Q100 automotive qualification, which certifies the part for automotive temperature and reliability standards. For non-automotive applications, this qualification is not required but does not prevent use. The LM158DT is suitable for any application within its specified operating range (-55°C to 125°C) and may be selected for its extended temperature capability.

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