4N38S1(TB)

Mounting Type:	Surface Mount
Package / Case:	6-SMD, Gull Wing
Supplier Device Package:	6-SMD
Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Number of Channels:	1
Voltage - Isolation:	5000Vrms
Current Transfer Ratio (Min):	20% @ 10mA
Current Transfer Ratio (Max):	--
Turn On / Turn Off Time (Typ):	10µs, 9µs
Rise / Fall Time (Typ):	--
Input Type:	DC
Output Type:	Transistor with Base
Voltage - Output (Max):	80V
Current - Output / Channel:	--
Voltage - Forward (Vf) (Typ):	1.2V
Current - DC Forward (If) (Max):	60mA
Vce Saturation (Max):	1V
Operating Temperature:	-55°C ~ 110°C

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Optoisolators - Transistor, Photovoltaic OutputOptoisolators, also known as optocouplers or photocouplers, are isolation devices which prevent electrical noise from affecting the system being controlled or monitored. The 4N38S1 (TB) is an optoisolator that comprises of a transistor, photovoltaic output. It enables electrical noise from one circuit to be blocked from entering another circuit, by using optical signals.The 4N38S1 (TB) optoisolator is made up of two parts, an input device and an output device. The input device is made up of a light-emitting diode (LED) and the output device is comprised of a photovoltaic transistor. The LED emits light when an electrical signal is applied, the light is then absorbed by a photosensitive transistor, which produces an electrical current at its output. The transistor’s output voltage is then transferred to another circuit, while isolating the original signal from the other circuit.A key benefit of optoisolators is that it doesnt require any additional power source for the output to function. The energy produced and used by the 4N38S1 (TB) optoisolator is purely derived from the input electrical signal.ApplicationsThe 4N38S1 (TB) optoisolator can be used in a number of different applications, with its key benefit of electrical isolation. In motor control applications, the optoisolator can be used to control motors while preventing electrical noise from affecting the main system. It is particularly effective in medical equipment as it helps to ensure patient safety.In industrial systems, the optoisolator can be used to provide an added layer of security when dealing with delicate electronics and other large components. It can also be used to shield two circuits from each other, which prevents accidental interference between them.In communications devices, the optoisolator can be used to provide a noise-free connection between two systems, while ensuring that there is no risk of interference between signals.Working PrincipleThe 4N38S1 (TB) optoisolator operates on the same principle as other optoisolators. When an electrical signal is applied, it is converted to light by the LED and absorbed by the photovoltaic transistor. This process results in an electrical current flowing at the output, which can then be isolated from the incoming signal.The 4N38S1 (TB) optoisolator includes an LED which emits light when an electrical signal is applied. This is then absorbed by the photovoltaic output transistor, producing an electrical current which is then sent to another circuit. This process helps to isolate the two systems from each other, ensuring that no electrical noise is transferred between them.ConclusionThe 4N38S1 (TB) optoisolator is a great tool for providing electrical isolation between two systems. It is capable of producing a noise-free connection between two circuits, ensuring that electrical noise is not passed between them. The optoisolator can be used in a number of different applications, including motor control, medical equipment, industrial systems, and communication devices, helping to ensure that operations run smoothly and safely.

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