PCBA外观检验培训资料

1、 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.EverSolar www.Ever-S All rights reserved by EverSolar, even and especially in cases of pr

2、oprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also reta

3、in sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 1.1、简介、简介： All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, incl

4、uding all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 1.21.2、电子产品的级别划分：、电子产品的级别划分： All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rig

5、hts relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and

6、dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.EverSolar www.Ever-S All rig

7、hts reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S All rights reserved by EverSolar, even and especi

8、ally in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S All rights reserved by EverSolar, even and especially in cases of proprietary rights applic

9、ations.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 螺 丝防滑垫圈平 垫 圈 非金属 金属 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain

10、sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 目标-1,2,3 级* 元器件位于焊盘中间（对称中心）。 * 元器件标识可见。 * 非极性元器件同方向放置，因此可用同一方法（从左到右或从上到下）识读其标识。 可接受-1,2,3 级* 极性元器件及多引线元器件方向摆放正确。 * 手工成型与手工插件时，极性符号可见。 * 元器件都按规定正确放在相应焊盘上。 *

11、非极性元器件没有按照同一方向放置。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 缺陷-1,2,3 级* 错件。* 元器件没有安装

12、到规定的焊盘上。* 极性元器件安装反向。 * 多引脚元器件安装方位不正确。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 目标1,

13、2,3 级* 非极性元器件安装得可从上到下识读标识。 * 极性符号位于顶部。 可接受1,2,3 级* 极性元器件安装的地端引线较长。* 极性符号不可见。 * 非极性元器件须从下到上识读标识。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemin

14、ation.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 缺陷1,2,3 级* 极性元器件安装反向。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江

15、苏艾索新能源股份有限公司 EverSolar www.Ever-S 目标：* 元器件所有引脚上的抬高凸台都座落于焊盘表面。 * 引线伸出量满足要求。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏

16、艾索新能源股份有限公司 EverSolar www.Ever-S 可接受1，2，3级：* 倾斜度尚能满足引脚伸出量和抬高高度的最小要求。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股

17、份有限公司 EverSolar www.Ever-S 缺陷1，2，3级：* 元器件的倾斜度使得其超过了元器件最大的抬高高度限制。 * 元器件的倾斜度使得其引线的伸出量不满足要求。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.

18、江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 目标：1，2，3 级* 连接器与板平齐。* 元器件凸台座落于板表面，所有引脚都有基于焊盘的抬高量，并且引脚伸出量满足要求。* 板锁（如果有）完全插进/搭锁到板孔中。 可接受：1，2，3 级* 连接器后边与板平齐。插入边不违反元器件高度和引脚伸出量的要求。 * 板锁完全插进/搭锁到板孔中（外壳未浮起）。 * 当只有一边于板面接触时，连接器的另一边与PCB板的距离不大于0.5MM，连接器倾斜度、其引脚伸出的长度和器件的高度要符合标准的规定* 引脚与孔正确插装匹配 All rights reserved

19、by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 缺陷：缺陷：1 1，2 2，3 3 级级* 由于连接器的倾斜，与之匹配的连接器无法插入。* 元器件的高度不符合标准的规定。*

20、 定位销没有完全插入/扣住PCB板* 元器件的引脚伸出焊盘的长度不符合要求* 注连接器需要满足外形、装配和功能的要求。如果需要，可采用连接器间匹配试验作最终接收条件。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能

21、源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 3 3、4 4 散热器安装散热器安装目标目标1 1，2 2，3 3 级级* 散热片安装齐平 * 元器件无损伤，无应力存在。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and

22、dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 3 3、4 4 散热器安装散热器安装缺陷缺陷1 1，2 2，3 3 级级* 散热片装错在电路板的另一面（A）。 * 散热片弯曲变形（B）。 * 散热片上失去了一些散热翅（C）。* 散热片与电路板不平齐。 * 元器件有损伤，有应力存在。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole po

23、wer of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 3.53.5、元器件固定、元器件固定粘接粘接 1，粘接胶 2，俯视 3，25%环绕 可接受-1，2，3级* 对于水平安装的元器件，粘接长度至少为元器件长度的50；粘接高度为元器件直径的25。粘接胶堆集不超过元器件直径的50。安装表面存在粘接胶，粘结胶大致位于元器件体中部。* 对于垂直安装的元器件，粘接高度至少为元器件高度的

24、50，圆周粘接范围达到25。 安装表面存在粘接胶。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 3.53.5、元器件固定、元器件

25、固定粘接粘接 1，俯视 2，粘接胶可接受-1，2，3级* 对于垂直安装的多个元器件，每个被粘接元器件用的粘接胶的量至少分别是元器件长度的50%，且元器件与元器件之间的粘接胶是连续的。每个元器件圆周粘接范围是其周长的25%。 安装表面存在粘接胶。* 对于玻璃体元器件，需要时，在粘结前加衬套。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rig

26、hts relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 3.53.5、元器件固定、元器件固定粘接粘接 1，50%L的长度 2，俯视粘接胶 3，25%环绕制程警示制程警示2 2，3 3级级 水平安装时，粘结胶超过元器件直径的50。缺陷缺陷* 粘接剂粘接范围少于周长的25%* 非绝缘的金属外壳元件粘接在导电图形上。* 粘接剂粘在焊接区域。* 对于水平安装的元件，粘接剂少于元件直径的25%。* 对于垂直安装的元件，粘接剂少于元件长度的50%。* 刚性

27、粘接剂直接粘在未加衬套的玻璃封装元件体上。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 可接受1,2,3 级* 无论是利用手工、

28、机器或模具对元件进行预成型，元件引脚上的刻痕、损伤或形变不能超过引脚直径的宽度或厚度的10%。（如果引脚的镀层受到破坏，暴露出元件管引脚的金属基材要见焊点基本要求） All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源

29、股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 缺陷1,2,3 级* 引线上有严重的缺口和锯齿，引线直径的减小超过10%。 缺陷1,2,3 级* 引线的损伤超过了10%的引线直径。* 由于重复或不细心的弯曲，引线变形。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to cop

30、ying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 目标-1，2，3 级* 外涂层完好。 * 元器件体没有划伤、缺口和裂缝。* 元器件上的标识等清晰可见。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relat

31、ing to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 3.73.7、器件损伤、器件损伤 可接受可接受1 1，2 2，3 3 级级* 有轻微的划伤、缺口，但没有暴露元器件基体或有效功能区域。 * 未损害结构的完整性。 * 元器件封接缝端部没有裂缝或其它损坏。 1 碎片缺口 2 裂缝 可接受可接受1 1 级级工艺警示工艺警示2 2，3 3 级级* 壳体上的缺口没有延伸并使得封装的功能区域暴露。* 器件损伤没有导致必要标识的丢失。 * 元器件绝缘/ 护套损伤区域不会

32、进一步扩大。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 3.73.7、器件损伤、器件损伤 可接受可接受1 1 级级制程警示制程

33、警示2 2，3 3 级级* 元器件绝缘/ 护套损伤区域导致的暴露的元器件导体不会与相邻元器件或电路发生短路危险 * 陶瓷基体元器件的边缘有缺口，但没有进入引脚或封接缝处。 * 陶瓷基体元器件的边缘有缺口，但没有发生裂纹的趋势。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmi

34、ssion and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 3.73.7、器件损伤、器件损伤 缺陷缺陷1,2,3 1,2,3 级级* 元器件上的缺口或裂纹：1)延伸到封装区域里边。（图A） 2)在通常不会暴露的区域暴露了引脚。（图A） 3）元器件功能区域暴露或完整性受到影响。（B/C/D/E/F）* 陶瓷基体元器件体上由裂纹。（F）* 玻璃基体元器件上后缺口或裂纹。（E）* 玻璃封接触处由裂纹或其它损坏。* 需要识读的标识等由于元器件损伤而缺失。* 绝缘层受到一定程度的损伤，导致金属暴露或者元器件变形。（C）

35、* 损伤区域有增加的趋势。* 损伤导致与相邻元器件或电路有短路的危险。 1 碎片延伸到封装区域 2 引脚暴露 3 封装 B BA A All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有

36、限公司 EverSolar www.Ever-S 3.73.7、器件损伤、器件损伤 E EC CD DF F All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSola

37、r www.Ever-S 4.1 4.1 焊点的基本要求焊点的基本要求 1 1）合格的焊点必须呈现润湿特征，焊料良好地附着在被焊金属表面。润湿的焊点，）合格的焊点必须呈现润湿特征，焊料良好地附着在被焊金属表面。润湿的焊点，其焊缝外形特征是呈凹形的弯液面，判定依据是润湿时焊料与焊盘，焊料与引线其焊缝外形特征是呈凹形的弯液面，判定依据是润湿时焊料与焊盘，焊料与引线 / / 焊端之焊端之间的界面接触角较小或接近于零度。通常焊料合金的范围很宽，可以表现出从很低甚至接间的界面接触角较小或接近于零度。通常焊料合金的范围很宽，可以表现出从很低甚至接近近0 0度的接触角直到接近度的接触角直到接近9090度的接

38、触角。如果焊接面有部分面积没有被焊料合金润湿，则度的接触角。如果焊接面有部分面积没有被焊料合金润湿，则一般认定为不润湿状态，这时的特征是接触角大于一般认定为不润湿状态，这时的特征是接触角大于9090 。 2 2）所有锡铅焊点应当有光亮的，大致光滑的外观，并在被焊金属表面形成凹形的弯）所有锡铅焊点应当有光亮的，大致光滑的外观，并在被焊金属表面形成凹形的弯液面。液面。 3 3）通常无铅焊点表面更灰暗、粗糙一些，接触角通常更大一些。其它方面的判断标准）通常无铅焊点表面更灰暗、粗糙一些，接触角通常更大一些。其它方面的判断标准都相同。都相同。 4 4）高温焊料形成的焊点表面通常是比较灰暗的。）高温焊料形

39、成的焊点表面通常是比较灰暗的。 5 5）对焊点的执锡（返工）应小心，以避免引起更多的问题，而且执锡也应产生满足验对焊点的执锡（返工）应小心，以避免引起更多的问题，而且执锡也应产生满足验收标准的焊点。收标准的焊点。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission a

40、nd dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 4.1 4.1 焊点的基本要求焊点的基本要求 如图之如图之A、B所示，焊点润湿角都不超过所示，焊点润湿角都不超过90度，合格；度，合格；但但C、D所示接触角虽然超过所示接触角虽然超过90度，度，属于例外情况，也是合格的，原因是焊点轮廓由于设计要求延伸到焊接区域外部边缘和阻焊属于例外情况，也是合格的，原因是焊点轮廓由于设计要求延伸到焊接区域外部边缘和阻焊膜膜 提供了锡铅焊点和无铅焊点可视检查标准，无铅的图片均标以提供了锡铅焊点和无铅焊点可视检查标准，无铅的图片均标以

41、All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 4.2 4.2 焊点外观合格性总体要求焊点外观合格性总体要求目标目标1 1，2 2，

42、3 3 级级* 焊缝表面总体光滑且焊料在被焊件上充分润湿。* 焊接件的轮廓清晰。 * 连接处的焊料中间厚边上薄，焊缝形状为凹型。 可接受可接受1 1，2 2，3 3 级级* 由于材料和工艺过程不同，例如采用无铅合金时或大质量PCBA冷却较慢时，焊点发暗、发灰，甚至呈有点粗糙。* 焊点润湿角（焊料与元器件之间，以及焊料与PCB之间）不超过90（图A、B）。* 例外情况：焊料量较大致使其不得不延伸到可焊区域外或阻焊膜处时，接触角大于90（图C、D）。 All rights reserved by EverSolar, even and especially in cases of propriet

43、ary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 4.2 4.2 焊点外观合格性总体要求焊点外观合格性总体要求从图从图1 1图图1818，是不同焊料合金和工艺条件下的焊点的合格性状态，是不同焊料合金和工艺条件下的焊点的合格性状态 图图1 1、锡铅焊料、锡铅焊料图图2 2、锡银铜焊料

44、、锡银铜焊料 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 4.2 4.2 焊点外观合格性总体要求焊点外观合格性总体要求图图3 3

45、、锡铅焊料、锡铅焊料图图4 4、锡银铜焊料、锡银铜焊料 图图5 5、锡铅焊料、锡铅焊料图图6 6、锡银铜焊料、锡银铜焊料 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 Ev

46、erSolar www.Ever-S 4.2 4.2 焊点外观合格性总体要求焊点外观合格性总体要求图图7 7、锡铅焊料、锡铅焊料图图8 8、锡银铜焊料、锡银铜焊料 图图9 9、锡铅焊料、锡铅焊料图图1010、锡银铜焊料、锡银铜焊料 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, trans

47、mission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 4.2 4.2 焊点外观合格性总体要求焊点外观合格性总体要求图图1111、锡铅焊料、锡铅焊料图图1212、锡银铜焊料、锡银铜焊料 图图513513锡铅焊料锡铅焊料图图1414、锡银铜焊料、锡银铜焊料 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of

48、 disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 4.2 4.2 焊点外观合格性总体要求焊点外观合格性总体要求图图1616、锡银铜焊料、锡银铜焊料 图图1818、锡银铜焊料、锡银铜焊料 图图1717、锡银铜焊料、锡银铜焊料 图图1515、锡银铜焊料、锡银铜焊料 All rights reserved by EverSolar, even and especially in cases

49、 of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 4.3 4.3 典型焊点缺陷典型焊点缺陷 4.3 .1 4.3 .1 底层金属的暴露底层金属的暴露 可接受可接受11，2 2，3 3 级级* 导线垂直边缘的铜暴露。* 元件引脚末端的底层金属暴露。制程警示制程

50、警示22，3 3 级级* 因缺痕，划伤，或其他的缺陷，引致在元件引脚（除了端头）、导体、焊盘上裸露基底金属，但不违反对引脚的要求和对导线焊盘的宽度要求。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司

51、江苏艾索新能源股份有限公司 EverSolar www.Ever-S 4.3 4.3 典型焊点缺陷典型焊点缺陷4.3 .2 4.3 .2 针孔、吹孔（爆孔）、孔洞等针孔、吹孔（爆孔）、孔洞等 可接受可接受11级级 制程警示制程警示22，3 3 级级*焊点满足所有其它要求的前提下，存在的吹孔 /针孔/孔洞。注：如果爆孔影响后续测试工序，或导致违反最小电气间距，则须进行去除处理。 吹孔图吹孔图1 1 吹孔图吹孔图2 2 All rights reserved by EverSolar, even and especially in cases of proprietary rights appli

52、cations.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 4.3 4.3 典型焊点缺陷典型焊点缺陷4.3 .2 4.3 .2 针孔、吹孔（爆孔）、孔洞等针孔、吹孔（爆孔）、孔洞等 孔洞图孔洞图1 1 针孔针孔 孔洞图孔洞图2 2 缺陷：缺陷：2 2。3 3 级级* * 针孔、吹孔、孔洞等使焊点减小，不能满足最低要求针孔、

53、吹孔、孔洞等使焊点减小，不能满足最低要求 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 4.3 4.3 典型焊点缺陷典型焊点缺陷4

54、.3 .3 4.3 .3 焊膏未熔化（回流不充分）焊膏未熔化（回流不充分） 缺陷：缺陷：2 2。3 3 级级* * 存在未完全熔化的焊膏。存在未完全熔化的焊膏。 焊膏未熔化焊膏未熔化图图1 1焊膏未熔化焊膏未熔化图图2 2 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmiss

55、ion and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 4.3 4.3 典型焊点缺陷典型焊点缺陷4.3 .4 4.3 .4 不润湿（不上锡）不润湿（不上锡）缺陷：缺陷：2 2。3 3 级级* 焊料未按要求润湿焊盘或引线焊料未按要求润湿焊盘或引线 * 焊料未按要求覆盖该种焊端（覆焊料未按要求覆盖该种焊端（覆盖不足）盖不足） 不润湿图不润湿图1 1 All rights reserved by EverSolar, even and especially in cases of proprietary rights

56、 applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 4.3 4.3 典型焊点缺陷典型焊点缺陷4.3 .4 4.3 .4 不润湿（不上锡）不润湿（不上锡）不润湿图不润湿图3 3不润湿图不润湿图4 4缺陷：缺陷：2 2。3 3 级级* 焊料未按要求润湿焊盘或引线焊料未按要求润湿焊盘或引线 * 焊料未按要求覆

57、盖该种焊端焊料未按要求覆盖该种焊端（覆盖不足）（覆盖不足） All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 4.3 4.3 典型焊点

58、缺陷典型焊点缺陷4.3 .5 4.3 .5 半润湿（半润湿（弱润湿弱润湿/缩锡缩锡 ）半润湿图半润湿图1 1半润湿图半润湿图2 2半润湿图半润湿图3 3缺陷：缺陷：2 2。3 3 级级* 存在不满足存在不满足SMTSMT或或THTTHT焊缝要求的焊缝要求的半润湿现象。半润湿现象。 All rights reserved by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights r

59、elating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 4.3 4.3 典型焊点缺陷典型焊点缺陷4.3 .6 4.3 .6 焊料过多焊料过多 焊料球：焊接后保留在板上的球状焊料。飞溅焊料粉末：回流焊工艺中飞溅在焊点周围的尺寸很小（只有原始焊膏金属粉末尺寸量级）的焊料球。目标：目标：1 1，2 2，3 3 级级PCBA上无焊料球/飞溅焊料粉末 4.3 .6.1 4.3 .6.1 焊料球焊料球/ /飞溅焊料粉末飞溅焊料粉末 All rights reserv

60、ed by EverSolar, even and especially in cases of proprietary rights applications.We also retain sole power of disposal, including all rights relating to copying, transmission and dissemination.江苏艾索新能源股份有限公司江苏艾索新能源股份有限公司 EverSolar www.Ever-S 4.3 4.3 典型焊点缺陷典型焊点缺陷4.3 .6 4.3 .6 焊料过多焊料过多4.3 .6.1 4.3 .6.1