The BD12734FJ-GE2: For small-signal gains, the 1 MHz GBW sets the closed-loop bandwidth; a gain of 10 gives roughly 100 kHz of usable bandwidth. Input bias current of 50 nA is moderate; it matters when the source impedance exceeds 100 kΩ, where the voltage drop across the source resistance becomes comparable to the offset.
Surface-mount assembly with tape-and-reel or cut-tape options is supported for prototyping and volume production.
ROHM Semiconductor lists the BD12734FJ-GE2 as Active with no end-of-life notice. The part is RoHS3 compliant (exempt from lead-free restrictions).