EL3H7(B)(TB)-G

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Optoisolators are electronic components used to electrically disconnect circuits while providing electrical isolation from input to output. The EL3H7(B)(TB)-G optoisolator is a high-speed, one-channel, transistor photovoltaic output, making it an ideal component for a range of applications requiring electrical isolation in a lightweight and small package. This article will explore the application field and working principles of the EL3H7(B)(TB)-G optoisolator in more detail.

Application Field

The primary application of the EL3H7(B)(TB)-G optoisolator is to provide electrical insulation for data transmission devices. The compact 9.7mm x 4.1mm x 5.1mm size makes it ideal to fit in the tightest of spaces. In addition to data transmission, the EL3H7(B)(TB)-G optoisolator can be used in motor control and phase control applications due to its high isolation voltage of up to 7,000Vrms. It is also commonly used in audio systems, switch mode power supplies, security systems and set-top boxes.

Working Principle

The EL3H7(B)(TB)-G optoisolator operates on the light source to generate a voltage. An LED light source is embedded in the device, and when current is applied, the light source conducts a small current to a photodiode, which then converts the light energy into electrical energy. This electrical energy is then sent to the output transistor, which is responsible for transmitting the electrical signal across the isolation barrier. This ensures that the circuitry on either side of the electrical isolation barrier remains electrically isolated.

In the EL3H7(B)(TB)-G optoisolator, the LED has a forward voltage of 1.8V and a maximum forward current of 20mA. The photodiode has a reverse voltage of 6V and a diode capacitance of 12pF. The output transistor is a NPN type with a base-emitter voltage of 0.2V and a collector-emitter voltage of 80V. The EL3H7(B)(TB)-G optoisolator has a switching frequency of up to 10KHz and low propagation delays of up to 2.5ns, making it suitable for use in high-speed applications that require high levels of electrical isolation between digital and analog circuits.

Due to its compact size, high performance and wide temperature range, the EL3H7(B)(TB)-G optoisolator is an ideal choice of component for applications requiring electrical isolation between digital and analog circuits.

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