FPT560 photo-darlingtons equivalent, very high-sensitivity photo-darlingtons.
two pins are used (collector and emitter pins). The availability of the base pin gives wide latitude for flexible circui.
FPT560/FPT570 are nitride passivated silicon photo Darlingtons. Each device is packaged in a TO-18 style, hermetically sealed package with lens cap. For most applications two pins are used (collector and emitter pins). The availability of the base pi.
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