LHI878

Lighting | Imaging | Telecom Pyroelectric Infrared Detectors Dual Element Detectors LHi 874, LHi 878 TO-39 / TO-5 housing Competitive cost version Designed for motion control The LHi 874 and LHi 878 pyroelectric infrared-detector series are the standard dual element design recommended for all variants of motion control.They include a dual element pyro-electric ceramic with FET in source follower connection. The LHi 874 is available as TO-39, whereas LHi 878 detector is available in TO-5 housing with standard infrared filter. They both offer high responsivity with excellent common mode performance (match) and low noise at steady state and temperature changes. For both variants RF improved options are available. Parameters p D A T A S H E E T LHi 874/ 878 min typical ma x units condition Element size R esponsivity Match Noise Offset Voltage 2x1 3 300 4000 1 20 0,2 10 50 1,55 mm2 V /W % µV pp V (2 elements) 100°C, 1 Hz 25°C , 0,3...10Hz RS =47kW , 25°C Right for modification reserved / WS /, 29.6.2001 NEP D* Output Impedance Operating Voltage Field of View, vertical horizontal Field of View 7,5x10-10 28x10-10 5x10 7 W Ö Hz 1Hz Bw, 100°C, 1 Hz 19x10 5 7 cm Ö Hz/W 1Hz Bw,100°C, 1 Hz 10 15 kW V ° ° 85 85 °C °C RS =47kW , 25°C RS =47kW , 25°C unobstructed unobstructed non permanent non permanent 2 95 90 Operating Temperature -40 S torage Temperature -40 100 LHi 874 LHi 878 10 R [kV/W] 1 0,1 0,01 0,1 f [H z] 1 10 Frequency Response Dimensions in mm ...