PART/ PYD 1384 (LHi 874); PYD 1394 (LHi 944)
PYD 1384, PYD 1394 Dual-Element Pyros
The Excelitas PYD 1384 (replacement to LHi 874) / PYD 1394 (replacement to LHi 944) Pyrodetector Series is the Low-Profile variant of the PYD 1388/PYD 1398 Standard Analog Pyrodetectors. The Low-Profile, Dual-Element Pyrodetectors feature two sensing elements in series connection and FET in source-follower circuit, connected into the low profile TO-39 Metal Housing with optical window a source follower circuit
Both Dual-Element, Low-Profile Pyrodetectors feature two sensing elements in opposed series connection and a source follower circuit. The PYD 1384 Pyrodetector represents the standard base model of the Low-Profile Series. PYD 1394 is equipped with a larger window that provides a wider field-of-view. An additional drain resistor and output capacitor further reduce interference effects of electromagnetic disturbances for EMI sensitive applications.
Ideally suited for motion detection, their low-profile design permits two Pyros to be space-efficiently integrated together so as to enable a 180° field-of-view.
| Responsivity | 4.2 kV/W (typical) |
| Noise | 20 µVpp (typical) / 50 µVpp (max) |
| Operation requirements | 2.0-10 V |
| Housing with optical window | TO-39 |
| PYD 1384, Field-of-view (horiz/vert) | 95°/87° |
| PYD 1394, Field-of-view (horiz/vert) | 110°/110° |
| Responsivity | 4.2 kV/W (typical) |
| Noise | 20 µVpp (typical) / 50 µVpp (max) |
| Operation requirements | 2.0-10 V |
| Housing with optical window | TO-39 |
| PYD 1384, Field-of-view (horiz/vert) | 95°/87° |
| PYD 1394, Field-of-view (horiz/vert) | 110°/110° |