CNW85SD

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Number of Channels:	1
Voltage - Isolation:	5900Vrms
Current Transfer Ratio (Min):	0.63% @ 10mA
Current Transfer Ratio (Max):	3.20% @ 10mA
Turn On / Turn Off Time (Typ):	--
Rise / Fall Time (Typ):	--
Input Type:	DC
Output Type:	Transistor with Base
Voltage - Output (Max):	80V
Current - Output / Channel:	100mA
Voltage - Forward (Vf) (Typ):	--
Current - DC Forward (If) (Max):	100mA
Vce Saturation (Max):	400mV
Operating Temperature:	--
Mounting Type:	Surface Mount
Package / Case:	6-SMD, Gull Wing
Supplier Device Package:	6-SMD

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The optoisolator device, also known as an opto-isolator or optical isolator, belongs to a family of optoelectronic isolators known as components that use light to provide electrical isolation between two parts of a circuit. The CNW85SD applies to transistor, photovoltaic output type optoisolators, allowing high voltage stability and features low on resistance.OverviewThe CNW85SD optoisolator is a 4-pin DIP package device with a rated voltage of 5.0 kV RMS (or equivalent) and a forward voltage of 1.3 V. It contains a high-efficiency, non-dissipative phototransistor output and provides low on-resistance, high voltage stability, and full temperature compensation. Its three terminals include a collector, a collector-emitter (c-e), and two emitters for the phototransistor output. It is typically used as an isolator between a high-side power supply and an input signal, so that when an output signal is detected by the isolated phototransistor, this output is communicated back to the power supply or other power source.Working PrincipleThe working principle of the CNW85SD optoisolator is based on a phototransistor output. Light enters the package and is modulated by a signal input, such as a voltage or current, and converted into a current in the phototransistor. The emitter-collector connection of the transistor generates a voltage, which is then fed back to the power supply or other power source.When the input signal to the optoisolator is low (below the leakage current threshold), the light is blocked from entering the package and no current flows through the phototransistor circuit. This means that the LED “off” state provides an electrical isolation to the power supply or other power source.On the other hand, when the input signal is high, the light will be modulated by the input and the phototransistor will be activated accordingly. This will cause a current to flow through the phototransistor circuit, which will then generate and feed back a voltage to the power source or other power source. This process provides electrical isolation to the power supply, enabling the signal to be safely communicated without risk of damaging the components or the application circuit.ApplicationThe CNW85SD optoisolator can be used in a multitude of applications. Its high voltage stability makes it an ideal choice in circuit applications requiring insulation between two circuits that have different power levels. It is also highly suitable for applications such as gain control in power supplies, motor speed control, industrial automation and process control, automation, instrumentation, and control systems, among others.ConclusionThe CNW85SD optoisolator is an excellent choice for isolating signals between two circuits with different power levels. Its high voltage stability, low on-resistance, and full temperature compensation make it a preferred solution for a variety of applications that require electrical insulation.

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