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

Analog Output Temperature Sensor, Military Grade, in Hermetic and TO-92 - LM335A


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 Temperature Sensor

Operating Temperature Range (C)
Local Sensor Accuracy (Max) (+/- C)
Supply Voltage (Min) (V)
Supply Voltage (Max) (V)
Package Group
Package Size: mm2:W x L (PKG)
Analog Output   
-40 to 100
-40 to 85   
3TO: 35 mm2: 5.44 x 6.41(TO)