The LM35DZ is a precision analog temperature sensor IC supplied in a compact three-pin TO-92 package. It gives a linear voltage output that is directly proportional to temperature in degrees Celsius, so you can read the value without calibration tables or complex maths. It's a popular pick for hobby electronics, school and university projects, Arduino and microcontroller builds, weather stations, incubators, and any DIY setup that needs reliable temperature sensing.
Key features
- Genuine LM35DZ precision temperature sensor.
- Standard TO-92 through-hole package for easy breadboard and PCB use.
- Linear, Celsius-scaled analog output that's simple to read with an ADC.
- Three pins only, with no external calibration components required.
- Compatible with Arduino, ESP, PIC and most common microcontrollers.
Typical uses
- Arduino and microcontroller temperature-reading projects.
- Smart greenhouse, incubator and grow-room monitoring.
- Weather stations and ambient temperature loggers.
- Student electronics and graduation projects.
How to choose / tips
- Confirm the package matches your board layout — this is the through-hole TO-92 version.
- Connect it to an analog (ADC) input pin for direct readings.
- Keep wiring short and stable for cleaner, low-noise measurements.
- Buy a spare for prototyping so a wiring mistake doesn't stall your project.
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