COB packaging technology stands out for its ability to integrate optical components directly onto a printed circuit board (PCB). This method uses epoxy resin adhesive to attach chips to the PCB, followed by wire bonding for electrical connections. Three common packaging methods—COB (Chip-on-Board), BOX (hermetic packaging), and coaxial (TO-CAN) packaging—each offer distinct advantages for different. Common optical device packaging methods include COB (chip-on-board packaging), BOX and coaxial packaging. Today, we will discuss the differences between them to help you better understand their characteristics and application scenarios.
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