Active production — no end-of-life risk on this BOM line
The ADT7461AR-REEL7: Note the RoHS non-compliant marking — this part uses lead-bearing solder terminations, which is acceptable under most industrial and telecom exemptions (RoHS Annex III) but must be flagged for any BOM that requires full RoHS compliance. If the assembly line is restricted to Pb-free only, a pin-compatible RoHS variant from the same family is the migration path.
Local and remote temperature sensing with SMBus interface
The ADT7461AR-REEL7 is a digital temperature sensor that monitors both its own die temperature (local) and an external diode-connected transistor (remote) over a two-wire SMBus interface. The 8-bit resolution delivers 1°C per LSB — adequate for thermal management and fan-speed control loops where ±3°C accuracy (highest) is the system budget. Local sensing covers -40°C to 120°C, matching the IC's own operating temperature range. The remote channel extends to -55°C to 150°C, allowing the external diode to sit on a hot component like a CPU core or power MOSFET while the sensor IC stays on a cooler part of the board. The SMBus interface shares the same bus as other power-management or monitoring ICs, keeping the board wiring to two lines (SDA, SCL) plus the remote diode pair.
Configurable features for power-sensitive monitoring
The part includes One-Shot mode for a single conversion on demand, Standby Mode to reduce quiescent current between readings, a Programmable Limit register for overtemperature alert, and an Output Switch (usually an open-drain THERM pin) that asserts when the measured temperature exceeds the limit. These features let the system controller poll the bus only when an event occurs, rather than continuously streaming data. The 8-SOIC package (0.154-inch width, 3.90mm body) is a standard surface-mount footprint — no special reflow profile beyond the standard JEDEC Pb-free or SnPb curve. The Bulk packaging means the parts ship in tubes or trays, not tape-and-reel; for high-volume pick-and-place, confirm the feeder compatibility or request a reeled variant from the same family.