TMP390A2DRLR from Texas Instruments, in a SOT-563. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	SETA	input	Channel A temperature set point. Connect a standard E96 resistor (1% tolerance) between SETA and GND to program the trip point. SETA resistor range 1.05 kΩ to 909 kΩ.
2	SETB	input	Channel B temperature and hysteresis set point. Connect a standard E96 resistor (1% tolerance) between SETB and GND. SETB resistor range 10.5 kΩ to 909 kΩ.
3	GND	power_in	Device ground reference.
4	OUTB	output	Channel B open-drain active-low logic output. If unused, may be left floating or tied to GND. Requires external pull-up (1 kΩ to 10 kΩ) to VDD or VDDIO when used.
5	VDD	power_in	Supply voltage input, 1.62 V to 5.5 V (3.3 V nominal). Absolute maximum 6 V.
6	OUTA	output	Channel A open-drain active-low logic output. If unused, may be left floating or tied to GND. Requires external pull-up (1 kΩ to 10 kΩ) to VDD or VDDIO when used.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOT-563
Category	Sensor
Pins	6

Ordering variants

Same part, different packaging or reel option.

TMP390A2DRLR
TMP390A2DRLRDRLT

CAD (KiCad official)

Symbol: TMP390A2DRLR
Footprint: Package_TO_SOT_SMD:SOT-563
3D model: SOT-563 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tmp390a2drlr.step`	448 KB	You want the bare part, or you mark your own boards.
`tmp390a2drlr-etched.step`	2.4 MB	You want the part with `TMP390A2DRLR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 526 faces against 54 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: Texas Instruments datasheet (27 pp, sha256 36195749121cf15f, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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