FPT137 phototransistors equivalent, high-sensitivity silicon phototransistors.
involving pulsed or low duty cycle operations. 2. Measured at noted irradiance as emitted from a tungsten filament lamp .
The FPT 132 and FPT 137 are silicon nitride protected npn Planar phototransistors with exceptionally stable characteristics and high illumination sensitivity. The case is made of a special plastic compound with transparent resin encapsulation that ex.
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