60 V, 3 A Schottky — the numbers that matter
The ROHM RBR3LAM60ATFTR is a Schottky barrier rectifier rated for 60 V DC reverse and 3 A average rectified current, with a maximum forward voltage of 660 mV at 3 A. That Vf figure at full rated current is the key number for conduction loss — at 3 A the forward drop stays under 0.66 V, which keeps the junction temperature manageable in a SOD-128 package.
AEC-Q101 — built for the automotive environment
The RBR3LAM60ATFTR is qualified to AEC-Q101, the automotive stress-test standard for discrete semiconductors. That means it has passed the full suite of reliability tests — high-temperature reverse bias, temperature cycling, and humidity — required for under-hood and chassis-domain electronics. The maximum junction temperature is 150 °C, so the part can handle the thermal cycling typical of engine-bay or transmission-mounted modules.
SOD-128 package — footprint and thermal path
The part comes in a SOD-128 surface-mount package (ROHM designates the supplier package as PMDTM). This is a compact, low-profile body — smaller than a standard SMA but larger than a SOD-123 — and the cathode tab on the top side provides the primary heat path to the PCB copper pad. For a 3 A continuous load, the board layout should use a generous copper area under the cathode tab to keep the junction-to-ambient thermal resistance within the design margin.