Small absorber size – best suited for temperature measurement applications
Standard type for  pyrometers and ear thermometers

The TPS 334 thermopile sensor in TO 5 type housing employs a chip of 0.7 x 0.7 mm²  absorber size and a 30 kV thermistor as temperature reference. The round window opening is equipped with a 5.5 mm longpass (standard)
infrared filter. The sensor shows a flat sensitivity characteristics over the wavelength.
The TPS 334 can be equipped with a G9 (8..14 mm) filter for precision remote temperature sensing (TPS 334 G9).