Description
The LM35 is a precision analog temperature sensor IC that provides an output voltage directly proportional to temperature in degrees Celsius (Centigrade). Unlike many conventional temperature sensors, the LM35 is factory calibrated and does not require external calibration or trimming, making it an ideal choice for accurate and reliable temperature measurement applications.
The sensor features a highly linear output of 10mV/°C, allowing it to interface directly with microcontrollers, ADCs, Arduino, Raspberry Pi (via ADC), STM32, ESP32, PLCs, and various industrial control systems. Its low output impedance and excellent linearity simplify circuit design while ensuring accurate temperature monitoring.
Designed for both industrial and embedded applications, the LM35 operates over a wide temperature range of -55°C to +150°C with low self-heating characteristics, making it suitable for continuous temperature monitoring in electronic equipment, automation systems, HVAC, battery management, laboratory instruments, and IoT devices.
The LM35 is available in the compact TO-92 through-hole package, making it easy to integrate into breadboards, prototype PCBs, and production designs.
Note: Product images are for reference only. The actual product may vary in appearance, manufacturer marking, or logo depending on stock availability. For complete electrical characteristics and application information, please refer to the datasheet available in the Attachment section.
Features
- Factory calibrated directly in degrees Celsius (°C)
- Linear output of 10mV/°C
- No external calibration required
- Typical accuracy of ±0.5°C at 25°C
- Wide operating temperature range from -55°C to +150°C
- Operating voltage from 4V to 30V
- Low output impedance for easy interfacing
- Very low self-heating (approximately 0.08°C)
- Low non-linearity for accurate measurements
- Suitable for remote temperature sensing applications
- Compatible with Arduino, ESP32, STM32 and ADC-based systems
- Compact TO-92 through-hole package
Benefits
- Provides accurate temperature measurement without calibration
- Simplifies circuit design with linear analog voltage output
- Easy to interface with microcontrollers and ADCs
- Low power consumption improves energy efficiency
- Reliable operation across a wide temperature range
- Suitable for both prototype and industrial applications
- Compact package allows easy PCB mounting
- Excellent long-term measurement stability and reliability
Applications
- Arduino Projects
- ESP32 Development Boards
- STM32 Embedded Systems
- Industrial Temperature Monitoring
- HVAC Control Systems
- Battery Temperature Monitoring
- Power Supply Protection
- Electronic Equipment Temperature Monitoring
- 3D Printer Temperature Control
- IoT Monitoring Systems
- Weather Monitoring Stations
- Laboratory Instruments
- Medical Equipment
- Home Automation Systems
- Data Logging Systems
- Process Control Equipment
- Over-Temperature Protection Circuits
- Motor Temperature Monitoring
- Embedded System Development
- Educational Electronics Projects
Package Includes
- 1 x LM35 TO-92 Analog Temperature Sensor IC
Specifications
| Parameter | Specification |
|---|---|
| Product Name | LM35 |
| Sensor Type | Analog Temperature Sensor |
| Package | TO-92-3 |
| Mounting Type | Through Hole |
| Output Type | Analog Voltage |
| Output Scale | 10mV/°C |
| Supply Voltage | 4V to 30V |
| Operating Temperature | -55°C to +150°C |
| Typical Accuracy | ±0.5°C at 25°C |
| Self Heating | Approximately 0.08°C |
| Shipping Weight | 0.008 kg |
| Shipping Dimensions | 8 × 5 × 3 cm |
