What the supply range and temp grade mean for your BOM
The MCP9700BT-E/LT: Local sensing matches the same -40°C to 125°C span, so the sensor tracks the board temperature without an external thermistor or bias network.
Analog output — no bus overhead, but you need an ADC channel
Output is an analog voltage with a 10 mV/°C nominal slope — the firmware reads it directly on an MCU ADC pin, no I2C or SMBus transaction overhead. The shutdown mode pulls the quiescent current to near zero, useful for battery-powered nodes that sleep between temperature readings.
SC-70-5 package — reflow and footprint check
SC-70-5 (SOT-353) is a standard 5-lead package with 0.65 mm pitch — the footprint is well-established, and the small body suits dense mixed-signal boards. Surface-mount assembly on Tape & Reel means it feeds directly into a pick-and-place machine; the reel quantity is typically 3000 pieces for this package size.