SFH6138

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Optoisolators, also known as optocouplers, optocoupler isolators, or photo-couplers, are specialized electrical components that use a light-emitting diode (LED) combined with a photosensitive receptor to allow the control of electricity through non-conductive barriers. The SFH6138 optocoupler is a transistor, photovoltaic output optoisolator specifically designed for power/processing applications in AC and DC devices. This article will provide an overview of its application field and the working principle of SFH6138.

Application Field

The SFH6138 optocoupler has many industrial applications that can benefit from its characteristics. It is frequently used in AC/DC devices such as switches, relays, solid state relays, inverters, converters, motor controllers, and device drivers. It is also used in power distribution equipment, transformers, motor controllers, and energy storage installations. Additionally, it can be employed for lamp control systems, lighting fixtures, automotive electronics, solar power applications, and electric vehicle battery charging.

Working Principle

The SFH6138 optoisolator combines an LED with a photosensitive transistor in an optically-isolated package. When the LED is activated, it emits light which is received by the photosensitive receptor, a transistor. This causes a charge imbalance in the transistor, generating a small electrical signal that is transferred across the barrier provided between the LED and the transistor, thus allowing the control of electricity without creating a direct electrical connection. The key benefits of this transformer-based optoisolator are the ability to control current and voltage without grounding and the potential for isolation from electrical noise.

The SFH6138 optoisolator is designed for use in AC devices rated up to 250 VAC and up to 16 A. It can control up to 8 A continuous current and its output is a three-terminal NPN transistor with a maximum collector voltage of 65 V. Its operating temperature range is between -40°C and 100°C and it is rated for a minimum of 100,000 operations. The SFH6138 has excellent resistance to electromagnetic interference (EMI) and is compatible with 1/16 SSR and PCB assembly.

In conclusion, the SFH6138 optoisolator is a transistor, photovoltaic output optoisolator specifically designed for AC and DC power applications. It features excellent EMI resistance and is suitable for a wide range of industrial and residential applications. Its electrical control signal is transmitted through a light-emitting diode and photosensitive transistor without the need for a direct electrical connection, allowing for both power and noise isolation. The SFH6138 is an ideal choice for applications that require a high level of isolation.

The specific data is subject to PDF, and the above content is for reference