OTC-239

      OTC-239 is thermopile infrared sensor .The thermopile sensor which forms a sensitive area of 0.5*0.5 mm2 consists of a series of 44 thermoelements . The sensor  OTC-239 with an optical filter is hermetically sealed into a TO-18metal housing. This standard filter allows measurements to be made in the spectral range above 5 m wavelength. The thermosensor which is comparable to an ohmic resistanceexhibits an almost white noise . OTC-239 has a constant signal versus frequency up to its frequency limit,and is direct proportional to incident radiation.The thermopile sensors are featured with an additional thermistor on the same package. The standard version of thermistor is housing conneccted to ground.
      There are eight essential applications of OTC-239.The first is that it has ear thermometers  and clinic thermometers.The Second is it has infrared thermometers.The third is consumer applications,including hair dryer, micro-wave oven, air conditioner,and refrigerator.The forth is  it has continuous temperature control of manufacturing. The fifth is  it has security system.The sixth is  it has Radiation monitor switch system
The seventh is  it has Absorbing measurement for gas analysis.The eighth is  it has thermoelectric converter.The ninth is  it has heat flux flowmeter.
      There are some electrical characteristics of OTC-239.The Typ of number of thermojunctions is 44.The Typ of Chip size is 1920*1725 ,and the unit is m2.The condition of Active area is Interference layer,the tye of it is 500*500 ,and the unit is m2.The condition of Thickness of substrate is Siliconsubstrate,the minimum of it is 600 while the maximum is 650, the tye of it is 500*500 ,and the unit is m.The condition of Resistance of thermopile 25 °C ,the minimum of it is 60 while the maximum is 80, the tye of it is 70 ,and the unit is KOhm.The condition of Sensitivity is With 5-14m filter,the minimum of it is 40 while the maximum is 70, the tye of it is 55 ,and the unit is V/W.The minimum of Detecctivityis is  4*107 while the maximum is 9*107, the tye of it is 7*107 ,and the unit is cm*Hz^1/2/W.Time constant is 30 MsNoise voltage is 34 nV/Hz^1/2.NEP is 0.8 nV/Hz^1/2.Temperature range Operation is from -20 to 100 °C.