虽然DI 水是绝缘的， 但如果吸收了空气中的水汽、灰尘后还是会导致绝缘电阻下降， 直接导致电容的容值下降。 对于PTH 电容甚至一些复杂的连接器， 通常的水洗机自带的烘干段都无法满足干燥工艺条件， 建议你外置一段烘干段进行烘干处理。 Thanks & Best regards! Jake Tu ________________________________ From: TGAsia [mailto:[log in to unmask]] On Behalf Of zhang yan ping Sent: Tuesday, December 18, 2012 12:38 AM To: [log in to unmask] Subject: [TGAsia] 回复: [TGAsia]电解电容进水 主要是机器烘干的风切的风压、温度、链速（inline)...这些参数配合好基本是可以处理干的。 如果是免洗锡膏工艺，Flux在经过化学清洗后，漂洗后都是DI水残留基本都在器件表面。 即使没干燥好的话SIR很大程度上是可以过的，DI残留也是绝缘的，除非导电离子残留（也就是没清洗干净）。 如果非常容易进水的话要看：器件包裹很松？浸泡式清洗？清洗时间常？温度高？ 我们目前很少见这种情况！ Best regards 张彦平 深圳市凯尔迪光电科技有限公司 Shenzhen KED Optical Electric Technology Co.,Ltd 深圳市光明新区西片区光侨路7号路1号高科（华柏）科技园1栋3楼 3F 1 building,Gaoke(Huabo) Science park,No.1 of 7 Road,Guangqiao Road,West Area,Guangming New District,Shenzhen,China Tel:15816898832 Tel:86+755-23429199转888 Fax:86+755-23429191 邮箱：[log in to unmask] <mailto:[log in to unmask]> 网址：www.kedtech.com <http://www.kedtech.com/> . 发件人： Snow Fu <mailto:[log in to unmask]> 发送时间： 2012-12-14 10:09 收件人： [log in to unmask] 主题： [TGAsia]电解电容进水 请教各位专家们， 电解电容（外层有PVC包裹），在波峰焊（wave soldering）在PCBA板子上后， 会进行水洗（我们的工艺就是选用的clean flux）. 会有水进入电容的PVC层中。 请问： 1. 此现象是否会影响电容的功能？ 2. 是什么原因会导致电容进水？ Best Regards! Snow Fu ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ TGAsia是一个为业界同仁提供技术交流的平台。您可以在论坛上提出技术问题，交流行业经验，寻找供应商等。请勿发送任何招聘，广告信息。（注：对于寻求供应商的邮件，请勿回复[log in to unmask],请私下和发件人联系）。如您需要退出该邮件论坛，请直接发送邮件至 [log in to unmask] ,谢谢。 ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ TGAsia是一个为业界同仁提供技术交流的平台。您可以在论坛上提出技术问题，交流行业经验，寻找供应商等。请勿发送任何招聘，广告信息。（注：对于寻求供应商的邮件，请勿回复[log in to unmask],请私下和发件人联系）。如您需要退出该邮件论坛，请直接发送邮件至 [log in to unmask] ,谢谢。 Legal Disclaimer: The information contained in this message may be privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and delete or destroy any copy of this message! ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________