Contact us

Es wird ein neues Fenster geöffnet Es wird ein neues Fenster geöffnet

What is the difference between a dark current and OFF-state collector current?

A leakage current flowing between the collector and emitter of the transistor at the output side of a transistor coupler is defined as Dark Current ICEO(IDARK). In this case, a current is not passed to the LED at the input side.
On the other hand, a leakage current flowing between the collector and emitter of the transistor at the output side when a low voltage (In Toshiba's case, VF=0.7V) is applied to the LED at the input side, though it is the OFF area, is defined as OFF-state Collector Current IC (off). This means that the OFF-state voltage at the input side is at a level below 0.7V.

Dark Current ICEO(IDARK) 

Dark Current ICEO(IDARK)

OFF-state Collector Voltage IC(off)

OFF-state Collector Current IC(off)

To Top
·Before creating and producing designs and using, customers must also refer to and comply with the latest versions of all relevant TOSHIBA information and the instructions for the application that Product will be used with or for.