This part is a kind of semiconductor called ZTP-315D1.

Function of this product has Thermometrics IR Sensor.

Manufacturers : General Electric

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Some of the text within the PDF file :

GE Measurement & Control Solutions ZTP-315D1 Thermometrics IR Sensor This thermopile sensor is used for non-contact surface temperature measuring. The ZTP-315D1 model consists of thermo-elements, a flat IR filter, thermistor for temperature compensation and a hermetically-sealed TO-5(39) package with heat sink. There is also a variety of filters available to help maximize performance in specific applications. Applications • Non-contact thermometers • Climate control in vehicles • Skin thermometers Features • High sensitivity • Included ambient temperature (thermistor) sensor for compensation • Fast response time ZTP-315D1 Specifications Parameter Chip Size Diaphragm Size Number of Couples Active Area Internal Resistance Resistance T.C. Responsitivity Responsitivity T. [ ... ]

ZTP-315D1 PDF Datasheet Download