Active AEC-Q100 temperature sensor for automotive BOMs
The TMP102AQDRLRQ1: The sensor communicates over I²C/SMBus with 11-bit resolution, reporting local die temperature across a -40°C to 125°C sensing range. Accuracy is ±2°C (typical) and ±3°C over the full automotive temperature window.
AEC-Q100 Grade 0 qualification means the part is characterized for -40°C to 150°C ambient — the full under-hood temperature band. The operating temperature spec of -55°C to 150°C gives additional margin for thermal transients in engine bay or exhaust-adjacent placements. The I²C/SMBus interface with 11-bit output means the host MCU reads temperature as a digital word — no ADC channel needed. Built-in features include a One-Shot mode for single readings to save power, an Output Switch (ALERT pin) for overtemperature interrupts, and a Shutdown Mode that drops quiescent current to near-zero between measurements.
Housed in a SOT-563 or SOT-666 package (supplier device package SOT-5X3), the part is surface-mount and hand-solderable with a fine-tip iron and magnification. The 1.6 mm × 1.6 mm footprint fits tight sensor nodes on automotive ECU or BMS boards. The base product number TMP102 covers multiple accuracy and package variants — confirm the full suffix for your BOM.