First, let us revisit the definition of a carrier tape. A carrier tape is a tape-like product utilized in the field of electronic packaging. It possesses a specific thickness and features cavities (also known as "pockets")-spaced at equal intervals along its length-designed to hold electronic components, as well as sprocket holes used for indexing and positioning. Carrier tapes are primarily employed in the electronic component assembly industry. When used in conjunction with a cover tape (or sealing tape), they serve to house and secure electronic components-such as resistors, capacitors, transistors, and diodes-within the pockets of the carrier tape. By sealing the cover tape over the carrier tape, a closed packaging structure is formed, effectively protecting the electronic components from contamination and physical damage during transit.
The ratio of the chip area to the package area should be kept as close to 1:1 as possible to maximize packaging efficiency.
Component leads should be kept as short as possible to minimize signal delay; conversely, the spacing between leads should be maximized to prevent mutual interference and enhance overall performance.
Based on thermal management requirements, a thinner package design is generally preferable.
Insights into Carrier Tape Forming Machines: Flat-bed carrier tape forming machines are best suited for carrier tapes with a width of 12 mm or greater-particularly those featuring a "KO" cavity depth (the secondary depth level) exceeding 4 mm.
Flat-bed machines tend to exhibit lower stability in the carrier tape forming process; specifically, controlling the P2 (pitch) and F (cavity-to-sprocket hole) values presents significant challenges, thereby making it difficult to achieve high-precision molding.
Roller-type carrier tape machines utilize a molding system comprising both a die (female mold) and a punch (male mold). The precision of the punch directly determines the precision of the resulting carrier tape molding. Current domestic equipment can achieve a precision tolerance of ±0.05 mm, while imported carrier tape forming machines are capable of reaching a precision of ±0.01 mm.
