Replacement Components to BA2904SFV-E2: LM2904PT and LM358APWR

Original Part

BA2904SFV-E2

Rohm Semiconductor

Standard Amplifier 2 Circuit 8-SSOP-B

Alternative Part

LM2904PT

STMicroelectronics

Standard Amplifier 2 Circuit Single-Ended 8-TSSOP

LM358APWR

Texas Instruments

Standard Amplifier 2 Circuit 8-TSSOP

1. LM2904PT Substitution Conclusion The LM2904PT can generally serve as a drop-in replacement for the original part, though the impact of performance deviations must be considered. Key differences include: higher slew rate (0.6 V/µs vs. 0.2 V/µs) and gain bandwidth product (800 kHz vs. 500 kHz), which significantly improve dynamic response and frequency handling, making it suitable for faster signal variations; slightly higher quiescent current (700 µA vs. 500 µA), leading to a marginal increase in power dissipation; and a moderately lower maximum supply voltage rating (30 V vs. 32 V), which may limit its use in applications operating close to 32 V. The package remains an 8-pin SSOP/TSSOP with pin-to-pin compatibility, but PCB layout suitability should be verified. In summary, if the application operates at or below 30 V and can tolerate slightly higher power consumption, the LM2904PT represents a viable performance‑enhanced substitute.

2. LM358APWR Substitution Conclusion The LM358APWR can effectively replace the original device, provided critical parameter alignment is evaluated. Notable differences include: improved gain bandwidth product (700 kHz vs. 500 kHz) and slew rate (0.3 V/µs vs. 0.2 V/µs), enhancing mid‑frequency response; stronger output current capability (40 mA vs. 30 mA), offering an advantage when driving capacitive or low‑impedance loads; lower input bias current (15 nA vs. 20 nA), which helps reduce input‑referred errors; and a similarly reduced maximum supply voltage rating of 30 V (original 32 V), requiring exclusion from higher‑voltage applications. The package is pin‑compatible, and quiescent current matches the original part (500 µA). Overall, provided the supply voltage does not exceed 30 V, the LM358APWR is a feasible alternative offering improved performance, comparable power consumption, and enhanced drive capability.

Analysis ID: 41CF-FEC0000

Based on part parameters and for reference only. Not to be used for procurement or production.