LM35 Analog Temperature Sensor TO-92

LM35 Analog Temperature Sensor TO-92 is a precision IC temperature sensor that provides a linear analog output proportional to the measured temperature in degrees Celsius. Housed in a compact TO-92 package, it is ideal for a wide range of temperature monitoring applications including HVAC, medical, industrial, and consumer electronics.

Key Features:

• Linear Output: Provides 10mV per °C output for easy interfacing.
• Wide Temperature Range: Measures from 0°C to +100°C (TO-92 version).
• High Accuracy: Calibrated directly in Celsius with ±0.5°C typical accuracy at room temperature.
• Low Self-Heating: Less than 0.1°C rise in still air, ensuring accurate readings.
• Low Operating Voltage: Operates from 4V to 30V, suitable for 5V microcontrollers.

Technical Specifications:

• Output Voltage: 10mV/°C
• Operating Temperature Range: 0°C to +100°C (TO-92)
• Supply Voltage: 4V to 30V
• Accuracy: ±0.5°C (typical) at 25°C
• Current Consumption: 60µA (typical)
• Response Time: 10s in still air
• Output Impedance: 0.1Ω

Mechanical Specifications:

• Package Type: TO-92 (Transistor-style)
• Pin Count: 3 Pins
• Pin Pitch: 2.54mm
• Dimensions: 4.5mm × 4.0mm × 5.0mm (approx.)

Pinout and Wiring:

• Pin 1: V_CC (4V to 30V supply)
• Pin 2: V_OUT (Analog temperature output)
• Pin 3: GND
• Wiring: Connect VOUT to ADC pin of microcontroller for temperature reading

Datasheet and Documentation:

• Download LM35 Datasheet (PDF)

Applications:

• HVAC Systems: Temperature control in heating and cooling systems.
• Battery Monitoring: Protects batteries from thermal damage.
• Medical Equipment: Used in non-critical temperature sensing.
• Embedded Systems: Ideal for Arduino, ESP, and Raspberry Pi projects.
• Consumer Electronics: Thermal protection in appliances and gadgets.

Equivalent Models:

• LM35DZ: TO-92 variant with identical electrical specs
• LM34: Fahrenheit-calibrated alternative
• MCP9700: Microchip’s analog temperature sensor alternative
• TMP36: Analog output sensor from Analog Devices

Package Includes:

• 1 x LM35 Analog Temperature Sensor TO-92