ZTP-148SRC1 Thermopile Infrared (IR) Sensor Thermometrics Thermopile Infrared (IR) Sensors are used for non-contact surface, temperature measure- ment. The ZTP-148SRC1 Model consists of thermo-elements, flat infrar ed filter and thermistor for tempera- ture compensation, all in one hermetically-sealed TO-46 (18) sensor package. There are a variety of filters available to maximize performance in specific applications. Applications Features Ear thermometers Compact design Forehead thermometers High sensitivity Surface temperature measurement of the human Fast response time body Low cost Included ambient temperature (thermistor) sensor Amphenol Advanced SensorsZTP-148SRC1 Specifications Thermopile Chip Limits Parameter Unit Condition Min Typ Max 2 Chip Size 1.8 X 1.8 mm Diaphragm 1.0 x 1.0 mm 2 Active Area 0.7 X 0.7 mm Absorber area Internal Resistance 60 85 110 k 25C Resistance T.C. 0.12 %/C Responsivity 54 V/W 500K, 1Hz, Responsivity T.C. -0.07 %/C 1/2 Noise Voltage 37 nW/Hz R.M.S, 25C 1/2 NEP 0.69 nW/Hz 1/2 /W Detectivity 1.02 cmHz Time Constant 32 ms NTC Thermistor for Temperature Compensation Limits Parameter Unit Condition Min Typ Max Resistance 100 k Tol.: 3% 25C Beta Value 3950 K Tol.: % 25C/50C Absolute Maximum Ratings Operating Temperature : -20C ~ 100C Storage Temperature : -40C ~ 120C 2