A precision analog temperature sensor in a TO-92 that outputs a voltage directly proportional to Celsius temperature: 10 mV per degree C, so 250 mV means 25 C. Unlike a thermistor it is linear and needs no calibration or linearization, and unlike the digital DS18B20 it feeds an ADC directly with three pins (+VS, VOUT, GND). It reads -55 to +150 C (the full range needs a small negative-bias resistor) with about plus/minus 0.5 C accuracy, drawing only 60 uA so self-heating is negligible. Runs from 4 to 30 V.

Pinout

Pin	Name	Type	Function
1	+VS	power_in	Positive supply pin. Recommended operating range 4 V to 30 V; absolute max 35 V. Quiescent current is typ. 60 µA (LM35A at 5 V, 25°C).
2	VOUT	output	Analog temperature output. Linear scale factor +10 mV/°C referenced to GND (0 V at 0°C). Low-impedance output (~0.1 Ω at 1 mA load); rated output current 10 mA; output voltage range −1 V to +6 V (absolute max).
3	GND	power_in	Device ground pin; connect to power-supply negative terminal (or to the −VS rail in a full-range dual-supply configuration).

Key specifications

Parameter	Value
Type	Analog temperature sensor
Output	10 mV/°C (linear, direct Celsius)
Range	-55 to +150 °C
Accuracy	±0.5 °C (typical)
Calibration	none required
Supply current	~60 µA
Supply voltage	4-30 V
Package	TO-92 (3-lead)

Ordering variants

Same part, different packaging or reel option.

LM35DZ (TO-92, 0 to 100 °C)
LM35CZ (TO-92, -40 to 110 °C)

CAD (KiCad official)

Symbol: Sensor_Temperature:LM35-LP
Footprint: Package_TO_SOT_THT:TO-92_Inline
3D model: TO-92 (KiCad packages3D)

Provenance

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

Datasheet: Texas Instruments datasheet (38 pp, sha256 1884601dffcbe160, 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