LM35DZ Analog Temperature Sensor

The LM35DZ is an industry-standard, high-precision integrated-circuit temperature sensor whose output voltage is linearly proportional to the Celsius (Centigrade) temperature. Unlike thermistors that require complex logarithmic calculations in your code, the LM35DZ is factory-calibrated directly in Celsius, making it incredibly easy to interface with microcontrollers like Arduino, Raspberry Pi, and ESP32.

With a linear scale factor of +10.0 mV/°C, reading the temperature is as simple as measuring the analog voltage output. Whether you are building a DIY weather station, a home automation thermostat, or a cooling fan controller, the LM35DZ delivers reliable accuracy without the hassle of external calibration.

Key Features & Benefits

• Directly Calibrated in Celsius: No complex math required with a linear +10.0 mV/°C scale factor.

• Highly Accurate: Rated for 0.6°C accuracy at room temperature.

• Wide Operating Range: Suitable for measuring temperatures from 0°C to +100°C.

• Low Self-Heating: Draws less than 60 microamps from its power supply, ensuring extremely low self-heating.

• Compact TO-92 Package: Easy to breadboard, solder onto prototyping boards, or fit into tight enclosures.

• No External Calibration: The device is trimmed and calibrated during manufacturing, saving you time and components.

Technical Specifications

• Sensor Type: Analog Temperature Sensor

• Package Type: TO-92 (Through-Hole)

• Temperature Sensing Range: 0°C to +100°C

• Output Voltage Scale: +10.0 mV/°C

• Supply Voltage Range (VCC): 4V to 30V

• Accuracy: 0.6°C at room temperature, 0.9°C over full range

• Drain Current: Less than 60 microamps

Pinout Configuration Looking at the flat side of the LM35DZ with the leads pointing downward:

• Pin 1 (VCC): Input Voltage (4V to 30V)

• Pin 2 (VOUT): Analog Output Voltage

• Pin 3 (GND): Ground

Common Applications

• Microcontroller Prototyping: Ideal for Arduino, PIC, AVR, and Raspberry Pi projects.

• Environmental Monitoring: DIY weather stations and greenhouse temperature tracking.

• Thermal Protection: Overheating protection circuits for power supplies and amplifiers.

• HVAC Systems: Simple thermostat controllers and home automation integration.

Pro-Tip for Makers: Because the LM35DZ outputs an analog signal, using a stable voltage reference (like the internal 1.1V reference on an Arduino Uno) will significantly increase your reading accuracy and prevent fluctuations caused by USB power supply noise.

Ensure your order is placed by 2PM to guarantee next-day delivery! Our commitment to prompt service includes a 24-hour delivery system through our network of carriers, aimed at ensuring your package arrives right on schedule.

Please note, a delivery fee of €4.99 applies for orders under €50. For those in remote areas, be aware that our couriers may apply an extra surcharge. This additional fee helps cover the costs of transporting your items to harder-to-reach locations.