【正文】 圖例和說明 ....................................................................................................................................6 檢查方法 ........................................................................................................................................6 放大輔助裝置及照明 ....................................................................................................................65 術(shù)語和定義.............................................................................................................................................66 回流爐后的膠點檢查.............................................................................................................................77 焊點外形.................................................................................................................................................8 片式元件—— 只有底部有焊端 ....................................................................................................8 片式元件——矩形或正方形焊端元件—— 焊端有 3 或 5 個端面 ..........................................10 圓柱形元件焊端 ..........................................................................................................................16 無引線芯片載體—— 城堡形焊端 ..............................................................................................20 扁帶“L”形和鷗翼形引腳 ........................................................................................................23 圓形或扁平形（精壓）引腳 ......................................................................................................28 “J”形引腳 ..................................................................................................................................31 對接 /“I”形引腳 ........................................................................................................................35 平翼引線 ......................................................................................................................................37 僅底面有焊端的高體元件 ..........................................................................................................38 內(nèi)彎 L 型帶式引腳 .....................................................................................................................39 面陣列/球柵陣列器件焊點 ........................................................................................................41 通孔回流焊焊點 ..........................................................................................................................438 元件焊接位置變化...............................................................................................................................449 典型的焊點缺陷...................................................................................................................................45 立碑 ..............................................................................................................................................45 不共面 ..........................................................................................................................................45 焊膏未熔化 ..................................................................................................................................45 不潤濕（不上錫）(NONWETTING ) .............................................................................................46 半潤濕（弱潤濕/縮錫）(DEWETTING) .......................................................................................46 焊點受擾 ......................................................................................................................................47 裂紋和裂縫 ..................................................................................................................................47 爆孔（氣孔）/針孔/空洞 ...........................................................................................................48 橋接（連錫） ..............................................................................................................................48 焊料球/飛濺焊料粉末 ................................................................................................................49 網(wǎng)狀飛濺焊料 ..............................................................................................................................4910 元件損傷.......................................................................................................