component

TMP102

Public Made by Adom

by adom

TI digital I2C temperature sensor, SOT-563. 12-bit, ±0.5 C, ALERT output, 4 addresses. Tiny + low power. Datasheet-verified.

componentsensortemperaturei2cdigitalsot-563texas-instruments
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Made with kicad-footprint-generator 10.0 · KiCad file format 20260206
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TMP102

Texas Instruments · I2C digital temperature sensor · SOT-563

A tiny digital temperature sensor with an I2C interface, in a 6-pin SOT-563 barely larger than an 0805. It reports temperature as a 12-bit value (0.0625 C resolution) with plus/minus 0.5 C accuracy and no calibration, so it feeds a microcontroller directly over two wires. A programmable ALERT output flags an over/under-temperature threshold for thermostat-style control, and the ADD0 pin selects one of four I2C addresses so several share the bus. It sips power (a few microamps averaged) which suits battery designs. Runs 1.4-3.6 V.

Pinout

Pin Name Type Function
1 SCL input Serial clock input for the SMBus / two-wire / I2C interface. Requires an external pullup resistor (typ. 5 kΩ). Input high 0.7×V+ min, input low 0.3×V+ max; supports Fast mode (up to 400 kHz) and High-speed mode (up to 2.85 MHz).
2 GND power_in Ground reference for the device. Return path for supply and digital I/O.
3 ALERT output Overtemperature alert output. Open-drain, requires an external pullup resistor. VOL ≤ 0.4 V at IOL = 3 mA (V+ > 2 V). Voltage on ALERT must not exceed V+ + 0.3 V and ≤ 4 V.
4 ADD0 input Address-select input. Connect to GND, V+, SDA, or SCL to select one of four unique I2C slave addresses, allowing up to four TMP102 devices on the same bus.
5 V+ power_in Positive supply voltage input, 1.4 V to 3.6 V (3.3 V nominal). Typical quiescent current 7.5 µA (serial bus inactive). Bypass with a 0.01 µF capacitor to GND at the pin.
6 SDA bidirectional Serial data line for the SMBus / two-wire / I2C interface. Open-drain output; requires an external pullup resistor (typ. 5 kΩ). VOL ≤ 0.4 V at IOL = 3 mA (V+ > 2 V).

Key specifications

Parameter Value
Type I2C digital temperature sensor
Resolution 12-bit (0.0625 °C)
Accuracy ±0.5 °C (-25 to +85 °C)
Interface I2C (SMBus), up to 3.4 MHz
Addresses 4 (via ADD0 pin)
Alert programmable ALERT output
Supply voltage 1.4-3.6 V
Package SOT-563 (6-pin)

Ordering variants

Same part, different packaging or reel option.

  • TMP102AIDRLR (SOT-563)
  • TMP102AIDRLT (SOT-563, small reel)

CAD (KiCad official)

  • Symbol: Sensor_Temperature:TMP102xxDRL
  • Footprint: Package_TO_SOT_SMD:SOT-563
  • 3D model: SOT-563 (KiCad packages3D)
  • 3D model files: tmp102-etched.step / tmp102-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tmp102.step / tmp102.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (33 pp, sha256 c9da6620ef95f75c, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF