4N273SD

Output Type:	Transistor with Base
Base Part Number:	4N27
Supplier Device Package:	6-SMD
Package / Case:	6-SMD, Gull Wing
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 100°C
Vce Saturation (Max):	500mV
Current - DC Forward (If) (Max):	100mA
Voltage - Forward (Vf) (Typ):	1.18V
Current - Output / Channel:	--
Voltage - Output (Max):	30V
Series:	--
Input Type:	DC
Rise / Fall Time (Typ):	--
Turn On / Turn Off Time (Typ):	2µs, 2µs
Current Transfer Ratio (Max):	--
Current Transfer Ratio (Min):	10% @ 10mA
Voltage - Isolation:	5300Vrms
Number of Channels:	1
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Optoisolators - Transistor, Photovoltaic Output

Optoisolators, also known as optocouplers, phototransistors, photocouplers, photoconductors, and optical isolators, are optoelectronic devices that provide electrical insulation between two circuits. They have been widely used in industrial control applications such as electrical relays, contactors, and switches. The 4N273SD is a type of opto-isolator that utilizes photovoltaic output.The 4N273SD opto-isolator consists of an LED and a phototransistor as its key components. The LED component is located on the lead side of the device and emits light when electrical current passes through it. The phototransistor component is located on the interior of the device and converts the incident light from the LED into a photocurrent. This photocurrent then controls the conductivity of the phototransistor, which in turn controls the output voltage of the device.The 4N273SD model of opto-isolator is designed for specific application fields. In the industrial control field, the 4N273SD can be used to control relays, contactors, and switches with higher levels of safety. It can also be used to provide electrical isolation between circuits that need to be electrically isolated or for noise suppression. Additionally, this model is also suitable for switching applications and process control.In addition to its use in industrial automation, the 4N273SD is also suitable for automotive applications. It can be used in on-board computer systems for controlling spark plugs, fuel injectors, and fuel pumps. Opto-isolators can also be used in automotive entertainment systems to control the outputs of LEDs and other light sources.The function of the 4N273SD opto-isolator is relatively straightforward. When the LED component of the device emits light in response to a current, the phototransistor converts the light energy into a photocurrent. This current then controls the conductivity of the phototransistor, which in turn regulates the output voltage of the device. Depending on the voltage level, the device can supply either an on or an off signal to the circuits being electrically isolated.When using a 4N273SD opto-isolator in an application, it is important to consider the environment in which the device will be installed. Exposure to extreme temperatures, moisture, vibrations, and electrical noise may cause the device to malfunction and should be avoided. It is also advised to check the device regularly to ensure that it is functioning correctly and safely. The 4N273SD opto-isolator is a reliable and durable device that is designed to provide electrical insulation between two circuits. Its use in industrial control, automotive, and computing applications is well-documented, and its application field and working principle make it a highly reliable and safe device to use.

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