EL3H7(F)-G

Series:	--
Packaging:	Tube
Part Status:	Active
Number of Channels:	1
Voltage - Isolation:	3750Vrms
Current Transfer Ratio (Min):	150% @ 5mA
Current Transfer Ratio (Max):	300% @ 5mA
Turn On / Turn Off Time (Typ):	--
Rise / Fall Time (Typ):	5µs, 3µs
Input Type:	DC
Output Type:	Transistor
Voltage - Output (Max):	80V
Current - Output / Channel:	50mA
Voltage - Forward (Vf) (Typ):	1.2V
Current - DC Forward (If) (Max):	50mA
Vce Saturation (Max):	200mV
Operating Temperature:	-55°C ~ 110°C
Mounting Type:	Surface Mount
Package / Case:	4-SOIC (0.173", 4.40mm Width)
Supplier Device Package:	4-SSOP

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Introduction of EL3H7(F)-G

EL3H7(F)-G is a type of opto-isolator, which is constructed by combining an LED with a photo transistor. It is a device combining two independent physical systems, allowing signal transfers between these two systems. The EL3H7(F)-G can provide electrical isolation between two circuits which helps protect equipment from overvoltage or electromagnetic interference.

Application of EL3H7(F)-G

The EL3H7(F)-G is widely used in many industrial applications including in process equipment automation, automotive systems, lifts and telecommunication and power systems for signal transfer and isolation. Specifically, the opto-isolator can be used for isolator protection in motor drives, circuit protection in medical devices and industrial control systems. It finds applications in automotive safety systems, as well as in motor control systems used to manage robots and other automated machinery. The EL3H7(F)-G helps protect circuit board circuits from electrical transients and unintentional grounding.

Working Principle of EL3H7(F)-G

The EL3H7(F)-G opto-isolator consists of an infrared source, an LED, and a photo transistor. The LED emits an infrared light pulse when a small current passes through it, which then impinges upon the active surface of the photo transistor. The photo transistor then amplifies the light from the LED, increases the current gain of the signal, and produces a high gain current in the receiving system. The photo transistor has its own internal amplifier and a current transfer ratio, which determines the amount of current received from the LED. The combination of LED and photo transistor allows the type of opto-isolator to pass very low-level signals, and also makes it ideal for a variety of digital signal conversion applications. The photo transistor enables current isolation, while the LED provides the current to the photo diode. The LED is a current-controlled and low-power light source. The LED can output a wide range of input current, which helps to perform the isolation between two circuits in an efficient manner. The photo transistor acts as an amplifier, which is able to increase the gain of the signal, and provide electrical isolation between input and output circuits. The device is also complies with the optical safety standards and provides high-speed switching.

Conclusion

The EL3H7(F)-G opto-isolator device is a combination of an LED and a photo transistor, which allows signal transfers between two independent physical systems. It is widely used in process equipment automation, automotive systems, lifts and telecommunication and power system for electrical isolation and signal transfer. The device offers electrical isolation between two circuits, and makes it ideal for a variety of digital signal conversion applications. The opto-isolator is also compliant with the optical safety standards and provides high-speed switching.

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