LM35DT
The LM35 series are precision integrated-circuit temperature devices with an output voltage linearly proportional to the Centigrade temperature. The LM35 device has an advantage over linear temperature sensors calibrated in Kelvin, as the user is not required to subtract a large constant voltage from the output to obtain convenient Centigrade scaling. The LM35 device does not require any external calibration or trimming to provide typical accuracies of ±¼°C at room temperature and ±¾°C over a full −55°C to 150°C temperature range. Lower cost is assured by trimming and calibration at the wafer level. The low-output impedance, linear output, and precise inherent calibration of the LM35 device makes interfacing to readout or control circuitry
especially easy. The device is used with single power supplies, or with plus and minus supplies. As the LM35 device draws only 60 μA from the supply, it has very low self-heating of less than 0.1°C in still air. The LM35 device is rated to operate over a −55°C to 150°C temperature range, while the LM35C device is rated for a −40°C to 110°C range (−10° with improved accuracy). The LM35-series devices are available packaged in hermetic TO transistor packages, while the LM35C, LM35CA, and LM35Ddevices are available in the plastic TO-92 transistor package. The LM35D device is available in an 8-lead surface-mount small-outline package and a plastic TO-220 package.
Applications
• Power Supplies
• Battery Management
• HVAC
• Appliances
Specification/Features:
- Calibrated Directly in Celsius (Centigrade)
• Linear + 10-mV/°C Scale Factor
• 0.5°C Ensured Accuracy (at 25°C)
• Rated for Full −55°C to 150°C Range
• Suitable for Remote Applications
• Low-Cost Due to Wafer-Level Trimming
• Operates From 4 V to 30 V
• Less Than 60-μA Current Drain
• Low Self-Heating, 0.08°C in Still Air
• Non-Linearity Only ±¼°C Typical
• Low-Impedance Output, 0.1 Ω for 1-mA Load
Package Includes
LM35DT Ic.
LM35DT Overview
The LM35DT is a precision integrated-circuit temperature sensor that outputs an analog voltage directly proportional to the measured temperature in degrees Celsius. Designed for easy interfacing, it delivers accurate readings without requiring external calibration and operates reliably between 0°C and 100°C.
Key Features of LM35DT
- Precision accuracy of ±0.25°C at room temperature and ±0.75°C over 0°C–100°C
- Wide supply voltage range from 4V to 30V for flexible power options
- Linear voltage output proportional to temperature—no complex conversion needed
- Low output impedance for stable readings and easy connection to ADCs
- Calibrated at the wafer level—no user trimming or external calibration required
- Fast shipping from Zbotic ensures you receive your LM35DT within 24 hours
Applications and Use Cases
- Temperature monitoring in microcontroller-based projects (Arduino, Raspberry Pi)
- Environmental sensing modules for weather stations and data loggers
- Thermal management in 3D printers, CNC machines, and laser cutters
- HVAC system temperature feedback and control loops
- Industrial process monitoring where precise temperature tracking is critical
- Battery pack and power supply temperature surveillance
How to Use LM35DT
Connect the LM35DT’s VCC pin to a 4–30V supply, the GND pin to ground and the output pin to an ADC input on your microcontroller. Place the sensor’s flat face close to the target surface or environment. Read the analog voltage (10 mV per °C) and convert it to temperature in °C using a simple software formula—no additional calibration steps are needed.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
What supply voltage does the LM35DT require?
The LM35DT operates from a 4V to 30V DC supply. It maintains accuracy across this range without external regulation.
Do I need to calibrate the LM35DT before using it?
No calibration is needed. The LM35DT is factory-trimmed and calibrated at the wafer level, providing accurate readings out of the box.
How do I convert the LM35DT output voltage to temperature?
The sensor outputs 10 mV per °C. For example, an output of 250 mV corresponds to 25°C. Simply read the voltage with an ADC and divide by 0.01 V to get the temperature in °C.
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Read More →Technical Specifications
| Model | LM35DT |
|---|---|
| SKU | AI0851 |
| Weight | 0.002814 kg |
| Availability | Out of Stock |
Applications & Use Cases
The LM35DT Temperature & Humidity Sensor is a versatile temperature & humidity sensor used across a wide range of applications including weather stations, greenhouse monitoring, HVAC systems, cold chain logistics, and server room monitoring.
Common use cases:
- Building a home weather station with Arduino
- Monitoring greenhouse conditions via IoT
- Alerting when server room temperature exceeds threshold
This product is ideal for IoT developers, agricultural engineers, and home automation enthusiasts.
Technical Tip: DHT22 offers better accuracy than DHT11. For precision applications, use SHT31 or BME280. Ensure adequate ventilation around the sensor.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
Saurabh Patil –
Pretty good LM35DT. Documentation could be better but the sensor itself is solid.
Gargi Motti (verified owner) –
Overall satisfied with service.
Daksh Das (verified owner) –
This LM35DT is excellent for the price. My data logging project is working perfectly now.
Karan Bhat (verified owner) –
Perfect for my weather station. This LM35DT gives consistent readings day and night.
Ayush Dhillon (verified owner) –
This LM35DT is a must-have for sensor projects. Plug and play with Arduino.
Mohit Dubey (verified owner) –
Superb LM35DT! Using it in my environmental monitoring system. Very reliable data.
Bharat Kumar (verified owner) –
Very satisfied with this LM35DT. Library support is good and it’s easy to interface.
Harsh Solanki (verified owner) –
Great LM35DT. Using it in my smart agriculture system. Reliable measurements every time.
Ashish Sen (verified owner) –
Perfect LM35DT for my automation project. Integrates seamlessly with my microcontroller.
Sahil Naidu (verified owner) –
This LM35DT is excellent for the price. My data logging project is working perfectly now.
Vipin Desai (verified owner) –
Excellent LM35DT! Readings are accurate and consistent. Perfect for my project.
Sachin Mehta –
Pretty good LM35DT. Documentation could be better but the sensor itself is solid.
Suresh Yadav (verified owner) –
Good LM35DT. Works as described. Calibration needed some patience but results are good.
Anushka Singh (verified owner) –
Superb LM35DT! Using it in my environmental monitoring system. Very reliable data.
Girish Kumar (verified owner) –
This LM35DT is a must-have for sensor projects. Plug and play with Arduino.
Bhavna Gill (verified owner) –
Average LM35DT. Readings fluctuate a bit. Works for rough measurements.
Chitra Tandon (verified owner) –
Great LM35DT. Using it in my smart agriculture system. Reliable measurements every time.
Piyush Naidu (verified owner) –
Excellent sensitivity and range on this LM35DT. Works better than I expected.
Farhan Malhotra (verified owner) –
Perfect LM35DT for my automation project. Integrates seamlessly with my microcontroller.
Vipin Arora –
Average LM35DT. Readings fluctuate a bit. Works for rough measurements.
Rakesh Sharma (verified owner) –
Love this LM35DT. Response time is fast and readings are stable.
Prateek Malhotra –
Perfect LM35DT for my automation project. Integrates seamlessly with my microcontroller.
Siddharth Iyer (verified owner) –
Very satisfied with this LM35DT. Library support is good and it’s easy to interface.
Sameer Menon (verified owner) –
Excellent sensitivity and range on this LM35DT. Works better than I expected.
Paras Choudhury –
Good LM35DT. Works as described. Calibration needed some patience but results are good.
Divyansh Rathore (verified owner) –
Pretty good LM35DT. Documentation could be better but the sensor itself is solid.
Naman Rawat (verified owner) –
Good quality LM35DT. Some variation in readings but within acceptable range.
Zara Verma (verified owner) –
Good quality LM35DT. Some variation in readings but within acceptable range.
Shreyas Arora (verified owner) –
Bought this LM35DT for my college project. Accurate readings, easy to code. Very happy!
Neeraj Garg (verified owner) –
This LM35DT is a must-have for sensor projects. Plug and play with Arduino.
Kavya Mishra (verified owner) –
Outstanding accuracy from this LM35DT. Compared with a professional instrument, readings match closely.
Akash Agarwal –
This LM35DT is excellent for the price. My data logging project is working perfectly now.
Swati Chauhan (verified owner) –
This LM35DT is excellent for the price. My data logging project is working perfectly now.
Neha Joshi (verified owner) –
Perfect for my weather station. This LM35DT gives consistent readings day and night.
Dinesh Naidu (verified owner) –
Nice LM35DT. Readings are mostly accurate. Good enough for my hobby project.
Piyush Bhatt (verified owner) –
Outstanding accuracy from this LM35DT. Compared with a professional instrument, readings match closely.
Vidya Thakur (verified owner) –
Superb LM35DT! Using it in my environmental monitoring system. Very reliable data.
Vivek Thakur (verified owner) –
Pretty good LM35DT. Documentation could be better but the sensor itself is solid.
Akash Sen (verified owner) –
Nice LM35DT. Readings are mostly accurate. Good enough for my hobby project.
Kartik Srivastava (verified owner) –
Bought this LM35DT for my college project. Accurate readings, easy to code. Very happy!
Kiara Pandey (verified owner) –
Outstanding accuracy from this LM35DT. Compared with a professional instrument, readings match closely.
Kapil Mittal (verified owner) –
Perfect for my weather station. This LM35DT gives consistent readings day and night.
Naveen Srivastava (verified owner) –
Outstanding accuracy from this LM35DT. Compared with a professional instrument, readings match closely.
Diya Mehta (verified owner) –
This LM35DT is excellent for the price. My data logging project is working perfectly now.