The manufacturing process of optocouplers is a precise process that integrates semiconductor technology, microelectronic packaging, and materials science. Its core lies in achieving the conversion of input electrical signals to optical signals and output electrical signals, while ensuring strict electrical isolation between input and output terminals. The following is a typical manufacturing process flow, and the logic is clearly explained as follows:
There are various types of packaging sizes for optocouplers (optocouplers) to meet different application requirements, such as space limitations, isolation voltage requirements, power dissipation capacity, and production processes. Here are some of the most common and representative types of packaging sizes:
Optocouplers, as key isolation components in electronic systems, are widely used in fields such as power management, industrial control, and communication. At present, the global market presents a pattern of "international giants leading, Chinese brands rising, and specialized fields". Based on technological strength, product layout, and market influence, major brands can be divided into the following three categories:
In the field of optocouplers, "817" has become one of the most widely recognized and best-selling standard optocoupler products in the electronics industry as a universal model identifier. Its market position stems from its unique technological characteristics, extensive application adaptability, and mature supply chain system, making it the "industrial rice" in the field of electronic engineering.
Optocoupler is a semiconductor device that couples and transmits input and output electrical signals through a light beam. It uses light-emitting diodes (LEDs) to convert electrical signals into optical signals, which are then restored to electrical signals through photodetectors such as phototransistors, photodiodes, photoresponsive thyristors, etc. This "electric optical electric" conversion process establishes a physical isolation barrier between input and output.
Optocouplers (optocouplers) play a crucial role in circuit design as a key electro-optical signal isolation device, used to achieve signal transmission while blocking electrical connections (such as high and low voltage isolation, eliminating ground loop interference, protecting sensitive circuits, etc.). Its performance not only depends on the internal photoelectric conversion efficiency, but its external packaging form also deeply affects the physical size, installation method, heat dissipation capacity, isolation and voltage resistance level, and application scenarios of the device. This article will systematically introduce the common types and characteristics of optocoupler packaging on the market.
The core function of optocouplers is to achieve the transmission of electrical signals under the premise of electrical isolation.
Optocoupler or Opto isolator, abbreviated as optocoupler, is an electro-optical conversion device that uses light as a medium to transmit electrical signals. Its core function is to achieve electrical isolation between input and output circuits, while transmitting signals. This isolation characteristic makes it widely used in suppressing noise, level conversion, and protecting sensitive circuits. According to different characteristics and application requirements, optocouplers can be classified as follows:
Optocoupler, also known as optocoupler or optoisolator, is a semiconductor device that transmits electrical signals through optical signals. Its core function is to achieve electrical isolation between input and output circuits, while also completing signal transmission. It is widely used in industrial control, communication equipment, medical equipment, and other fields.
