Package and mounting
The ROHM LMR821G-GTR is a single-channel general-purpose op-amp in a 5-pin SC-74A / SOT-753 surface-mount package. Its 5 MHz gain-bandwidth product and 2 V/µs slew rate put it in the workhorse class for signal conditioning — audio line-level filtering, sensor buffering, or ADC front-end drive where you need clean gain up to a few hundred kilohertz. The 300 µA supply current per channel keeps the power budget light for multi-rail portable designs.
Package and footprint — SC-74A / SOT-753
The SC-74A (SOT-753) is a 5-lead small-outline package, 2.9 mm × 1.6 mm typical body, with a 0.95 mm pitch. It's a common footprint for op-amps and linear regulators, so the board layout is straightforward. Surface-mount rework with hot air is manageable; the package is MSL 1 per typical ROHM handling, but confirm the moisture sensitivity level on the reel label before reflow.