Analog Output Temperature Sensor, Military Grade, in Hermetic and TO-92 - LM335


Analog Output Temperature Sensor, Military Grade, in Hermetic and TO-92


The LM135 series are precision, easily-calibrated, integrated circuit temperature sensors. Operating as a 2-terminal zener, the LM135 has a breakdown voltage directly proportional to absolute temperature at 10 mV/°K. With less than 1-Ω dynamic impedance, the device operates over a current range of 400 µA to 5 mA with virtually no change in performance. When calibrated at 25°C, the LM135 has typically less than 1°C error over a 100°C temperature range. Unlike other sensors, the LM135 has a linear output.

Applications for the LM135 include almost any type of temperature sensing over a –55°C to 150°C temperature range. The low impedance and linear output make interfacing to readout or control circuitry are especially easy.

The LM135 operates over a –55°C to 150°C temperature range while the LM235 operates over a –40°C to 125°C temperature range. The LM335 operates from –40°C to 100°C. The LMx35 devices are available packaged in hermetic TO transistor packages while the LM335 is also available in plastic


  • Directly Calibrated to the Kelvin Temperature
  • 1°C Initial Accuracy Available
  • Operates from 400 µA to 5 mA
  • Less than 1-Ω Dynamic Impedance
  • Easily Calibrated
  • Wide Operating Temperature Range
  • 200°C Overrange
  • Low Cost

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Parametrics Compare all products in Analog Output

Local Sensor Accuracy (Max) (+/- C)
Operating Temperature Range (C)
Supply Voltage (Min) (V)
Supply Voltage (Max) (V)
Supply Current (Max) (uA)
Sensor Gain (mV/Deg C)
Output Impedance (Ohm)
LM335 LM135 LM135A LM235 LM35
6     3     1     3     0.5    
-40 to 100     -55 to 150     -55 to 150     -40 to 125     -40 to 110
-55 to 150
0 to 100
0 to 70    
5     5     5     5     4    
400     400     400     400     114    
10     10     10     10     10    
Military     Military     Military     Military     Military    
No     No     No     No     No    
0.6     0.5     0.5     0.5     0.4    
Analog Output     Analog Output     Analog Output     Analog Output     Analog Output    

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