关键词: 引脚压伤, 齿形镶件, 塑封模具, 相关性

Abstract: Pin crushing on lead frames is a serious quality issue, which not only affects the quality of the product’s appearance, but also leads to serious abnormalities in the electrical properties and even leads to short circuits and tip dischargesand other abnormalities during terminal use. The risk factors for pin crushing during plastic packaging process are listed and analysed on a test-by-test basis, taking into account the unusual cases that have actually occurred. The double ratio and correlation test are conducted using Minitab software to identify the main influencing factors for the occurrence of anomalies. This is extended to other possible causes of pin crushing, and the correlation between different influencing factors and pin crushing is established.And improvement suggestions are proposed from the perspective of mold design and process methods, providing a reference for improving the pin crushing problem that occurred in actual production.

Key words: pin crushing, toothed inserts, plastic packaging molds, relevance