4N35 Optocoupler
Product Description
4N35 is an optocoupler IC in which an infrared emitter diode drives a phototransistor. They are also known as optoisolators since they separate two circuits optically. These are used to couple two circuits without any ohmic contact. They allow one of the circuits to switch another one while they are completely separate. The first circuit is connected to IR diode while the other circuit with the phototransistor. The isolation ensures that no damage occurs in either of the circuits while the other one has a fault.
Features:
- Gallium-Arsenide-Diode Infrared Source Optically Coupled to a Silicon npn Photo-transistor
- High Direct-Current Transfer Ratio
- High-Voltage Electrical Isolation 1.5-kV, 2.5-kV, or 3.55-kV Rating
- High-Speed Switching tr = 7 µs, tf = 7 µs Typical
- Input-to-output peak voltage (8-ms half sine wave)4N35= 3.55 kV
- Input-to-output root-mean-square voltage (8-ms half sine wave)4N35= 2.5 kV
- Collector-base voltage=70 V
- Collector-emitter voltage=30 V
- Emitter-base voltage=7 V
- Input-diode reverse voltage=6 V
- Input-diode forward current: Continuous 60 mA
- Typical Applications Include Remote Terminal Isolation, SCR and Triac Triggers, Mechanical Relays and Pulse Transformers
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