LM50CIM3X from Texas Instruments, in a SOT-23. 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	+Vs	power_in	Positive supply input. Operating range 4.5 V to 10 V (absolute max +12 V). Quiescent current is typically 130 µA (max 180 µA).
2	VO	output	Analog temperature output. VOUT = (10 mV/°C x Temp °C) + 500 mV, giving +100 mV at -40°C, +750 mV at +25°C, and +1.75 V at +125°C. Output resistance typically 2 kΩ (max 4 kΩ).
3	GND	power_in	Ground / supply return. The die backside is directly attached to this pin for good thermal conductivity to the PCB.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOT-23
Category	Sensor
Pins	3

Ordering variants

Same part, different packaging or reel option.

LM50CIM3X
LM50CIM3XQIM3
LM50CIM3XQIM3X
LM50CIM3XBIM3
LM50CIM3XBIM3X

CAD (KiCad official)

Symbol: LM50CIM3X
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`lm50cim3x.step`	59 KB	You want the bare part, or you mark your own boards.
`lm50cim3x-etched.step`	1.5 MB	You want the part with `LM50CIM3X` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 385 faces against 69 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 (15 pp, sha256 dc1fdab2ae4b8f03, 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