Lighting | Imaging | Telecom p Pyroelectric Infrared Detectors Dual Element Detectors LHi 874, LHi 878 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. LHi 874/ 878 Parameters min Element size 3 300 R esponsivity Right for modification reserved / WS /, 29.6.2001 (2 elements) 4000 V /W 100°C, 1 Hz 20 50 µV pp 25°C , 0,3...10Hz 1,55 V RS =47kW , 25°C W Ö Hz 1Hz Bw, 100°C, 1 Hz 0,2 7,5x10-10 28x10-10 5x10 7 19x10 10 kW RS =47kW , 25°C 15 V RS =47kW , 25°C 95 ° unobstructed 90 ° unobstructed 2 horizontal cm Ö Hz/W 1Hz Bw,100°C, 1 Hz 7 5 Field of View, vertical Operating Temperature -40 85 °C non permanent -40 85 °C non permanent S torage Temperature LHi 874 100 R [kV/W] 10 1 10 Dimensions in mm f [Hz] Europe: PerkinElmer Optoelectronics GmbH Wenzel Jaksch Str 31 Wiesbaden / Germany Phone +49(0)611 492 0 Fax +49(0)611 492 170 mm2 Noise Operating Voltage 1 2x1 % Output Impedance 0,1 condition 10 D* Frequency Response units 1 NEP 0,1 0,01 ma x Match Offset Voltage Field of View typical USA: PerkinElmer Optoelectronics 2175 Mission Colledge Blvd Santa Clara, CA 95054 Phone +408 565 0830 Fax +408 565 0703 Asia: PerkinElmer Optoelectronics 47, Ayer Rajah Crescent #06-12 Singapore 139947 Phone +65 775 2022 Fax +65 775 1008 www.perkinelmer.com/opto LHi 878 D A T A S H E E T TO-39 / TO-5 housing