LM335 Temperature Sensor: Alternative, Pinout and Datasheet

LM335 sensor is a precision temperature sensor that can be easily calibrated. It has a breakdown voltage directly proportional to absolute temperature at 10mV/°K. LM335 has a low dynamic impedance.  LM-335 operates on a current range of 400uA-5mA having resistance less than 1 ohm.  

LM335 operates as two-terminal Zener diode. At the temperature ranging from -40 degree Celsius to 100 degree Celsius, LM335 can be used for each type of temperature sensing purposes. This device is available in different dimensions and in different sizes. 

LM335 is most commonly available in the market due to its unique features including e.g. large temperature range, cost-effectiveness, low dynamic resistance, initial accuracy up to 1 degree Celsius. LM335 can be used at several different places. Its applications include Heat Ventilation and Air Conditioning (HVAC), power supplies, battery management systems, home appliances, embedded systems, etc.

LM335 Symbol

LM335 Footprint

LM335 3D Model

●Cheap and Easy to Calibrate

●Dynamic Impedance is less than 1 ohms.

●200 °C Over the range

●1°C Initial Accuracy Available

●Directly calibrated to the kelvin temperature scale

●Operating current range 400uA to 5mA

●Low cost

STMicroelectronics LM335D technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics LM335D.

Using an LM335 sensor is easy, just connect the circuit as per the below circuit diagram. There are two ways to use LM335 sensor, one is a basic temperature sensor and another is calibrated. To calibrate LM335 connect the ADJ pin to a 10K Potentiometer and adjust accordingly. When LM335 is calibrated at 25°C, it has typically less than 1°C error over 100°C. It gives a linear output.

●Used in Power Supplies

●Used in Battery management

●Used in HVAC

●Used in Appliances

STMicroelectronics is a French-Italian multinational electronics and semiconductors manufacturer headquartered in Plan-les-Ouates near Geneva, Switzerland.

 The company resulted from the merger of two government-owned semiconductor companies in 1987: "Thomson Semiconductors" of France and "SGS Microelettronica" of Italy. 

It is commonly called "ST", and it is Europe's largest semiconductor chip maker based on revenue. While STMicroelectronics corporate headquarters and the headquarters for the EMEA region are based in the Canton of Geneva, the holding company, STMicroelectronics N.V. is incorporated in the Netherlands. 

The company's US headquarters is in Coppell, Texas. Headquarters for the Asia-Pacific region is in Singapore whilst Japan and Korea operations are headquartered in Tokyo. The company headquarters for the China region is in Shanghai.