PYROELECTRIC DUAL ELEMENT Pyroelectric detectors for motion Sensing DETECTORS FOR MOTION SENSING LHi 778, LHi 878, PYD 1388 - Low Cost Pyro Applications * Auto light switch * Wall switch * Auto lamps Features and Benefits * TO-5 metal housing * Different window sizes Product Description This low cost Dual Element detector range offers standard TO-5 housings with different window sizes. The LHi 778 has a smaller window for minimal cost. The PYD1388 has an additional EMI protection option. * EMI protection for PYD1388 All dimensions in mm LHi 778, LHi 878, PYD 1388 - Low low cost CostPyros Pyro Parameter Responsivity, min. Responsivity, typ. Match, max. Noise, max. Noise, typ. Spec. detectivity Field of view, horizontal Field of view, vertical Source voltage Operating voltage EMI performance WLI Height Optical element location Filter size Symbol Symbol LHI 778 Rmin 3.3 Rtyp 4.2 Mmax10 Nmax 50 Ntyp 20 D* 20 FoV 71 FoV 71 0.2 - 1.55 * 4.2 h3.2 / 0.75 he / ho4 / 3 X/Y PYD LHI 778 1388 LHI 878 PYD 1388 3.3 4.2 10 50 20 20 71 95 71 87 0.2 - 1.55 2.0** ... 12 * ** 3.3 3.3 3.3 kV/W 4.2 4.2 4.2 kV/W 10 10 10 % 50 50 50 Vpp 20 20 20 Vpp 20 20 107cm*Hz/W 20 95 95 95 87 87 87 0.2 - 1.55 0.2 - 1.55 0.2 - 1.55 V 2.0 ... 12 ** 2.0 ... 12 ** * ** * 4.2 ** mm 4.2 3.2 / 0.754.2 mm 3.2 / 0.75 4.6 / 3.4 mm 3.2 / 0.75 4.6 / 3.4 4.6 / 3.4 4.2 3.24.2 / 0.75 3.2 4.6/ /0.75 3.4 4/3 LHI 878 Remark Unit Remark kV/W kV/W % Vpp Vpp 107 cm*Hz/W f = 1 Hz f = 1 Hz V V 0.4...10 Hz / 20 C 0.4...10 Hz / 20 C 1 Hz / 1 Hz BW / 20 C Unobstructed Unobstructed 47 k / 20 C / 5 V 47 k / 20 C Excelitas tester mm mm mm * Improved, ** Excellent 14 www.excelitas.com