目視檢驗規(guī)范ipc610(ppt34頁)(編輯修改稿)
2025-01-24 12:38 本頁面
【文章內(nèi)容簡介】 land with (P). 拒收 (Nonconforming Defect) ?零件側(cè)邊偏移度 (A)超出 25%零 件直徑 (W)或錫墊長度 (P)的 25%. ?零件往錫墊長邊偏移 (B). ?Side overhang (A) is 25% diameter of ponent width (W) or land with (P). ? End overhang is not permitted. 無導(dǎo)腳零件 (Leadless Chip Carriers with Castellated Terminations) – 偏移 (Shift) 允收 (Target Condition) ?零件未偏移 . ?零件延伸引腳長等於電路板 上錫墊長 . ?零件立於電路板上錫墊中心 . ?No side overhang. ? Fillet extension equals land width. ? Fillet height covers terminal. 允收極限 (Acceptable) ?零件偏移向錫墊寬邊之間 (A), 偏移度小於電路板上錫墊面 (W)的 25%. ?Maximum side overhang (A) is 25%W. 拒收 (Nonconforming Defect) ?零件偏移向錫墊寬邊之間 (A), 偏 移度大於電路板上錫墊面 (W)的 25%.零件偏移向錫墊長邊之間 (B). ?Maximum side overhang (A) is 25%W. ?End overhang (B) is not permitted. 允收 (Target Condition) ? 零件腳未偏移 . ?No side overhang. 允收極限 (Acceptable) ?零件偏移向錫墊寬邊之間 (A), 偏移小於電路板上錫墊寬度 (W)的 25% 或偏移小於 . ?Side overhang (A) is 25%W or mm. 拒收 (Nonconforming Defect) ?零件偏移向錫墊寬邊之間 (A), 偏移大於電路板上錫墊寬度 (W) 的 25%或偏移大於 . ?不允許任何的零件趾端偏移 如 (B). ?Side overhang (A) is greater than 25%W or mm whichever is less. ?Toe overhang (B) is not specified 平緞腳 (L型 ) / 鷗翼腳 /圓柱 L腳 (Flat Ribbon L / Gull Wing leads / Round leads) – 偏移 (Shift) I 腳 (“I” Leads)
教學(xué)課件相關(guān)推薦
鄂ICP備17016276號-1