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行业新闻新闻中心 > 行业新闻 > PCBA板检测方法大全    

PCBA板检测方法大全

点击数:1  发布日期:2021/5/14

<span style="background: white; color: rgb(42, 51, 60); font-family: 宋体; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">由于目前SMT技术的不断成熟,PCBA组装加工过程中的组件变得越来越小,使PCBA具有更强大的功能。同时,也为测试和检验带来了巨大得挑战。测试是确保将高质量PCBA产品交付给客户至关重要的步骤,检验和测试可以减轻加工风险。以下是<span style="background: white; color: rgb(98, 168, 234); text-decoration: none; mso-bidi-font-family: "Segoe UI"; text-underline: none;">PCBA<span lang="EN-US" style="background: white; color: rgb(98, 168, 234); text-decoration: none; mso-bidi-font-family: "Segoe UI"; text-underline: none;">加工<span style="background: white; color: rgb(42, 51, 60); font-family: 宋体; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">行业的几种测试方法集锦。

<span lang="EN-US" style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">1<span style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">、手动目视检查

<span style="color: rgb(42, 51, 60); mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI"; mso-ascii-font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: 宋体;">目视检查可以在PCBA过程的每个步骤中实现。PCBA组装手工目检是PCBA质检中最原始的方法,仅仅只用眼睛和放大镜检查PCBA板的电路和电子元器件的焊接情况,如焊接方式,焊点是否桥接,是否少焊和出现焊接不完整性。在目检中放大镜是基础工具,同时可以使用金属针检查IC引线上的焊接不完整性。

<span lang="EN-US" style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">2<span style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">、在线测试仪(ICT

<span style="color: rgb(42, 51, 60); mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI"; mso-ascii-font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: 宋体;">在线测试仪因其出色的测试和检验性能在PCBA加工行业中被广泛应用。ICT几乎可以在PCBA中找出焊接和组件的问题。它具有高速度,高稳定性。其中电探针测试填充印刷电路板(PCB),检查短路,开路,电阻,电容和其他基本量,以显示组件是否正确制造。

<span lang="EN-US" style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">3<span style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">、自动光学检测(AOI

<span style="color: rgb(42, 51, 60); mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI"; mso-ascii-font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: 宋体;">自动光学检测是一种非接触式的测试方法。自动光学检测在检验中起着重要的作用。自动光学检测是印刷电路板制造过程中的自动目视检查,其中相机自动扫描被测PCBA板的灾难性故障(例如缺失部件)和质量缺陷(例如圆角尺寸或形状或组件偏斜)。

<span lang="EN-US" style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">4<span style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">、自动光学检测(AXI

<span style="color: rgb(42, 51, 60); mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI"; mso-ascii-font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: 宋体;">对于广泛使用BGACSP,像ICT这样的典型检测方法无法检查组件埋入的焊点。AXI能够测试未对准,缺少球和焊料沉积。AXI利用X射线穿透固体东西来捕捉他们的照片。它可以分为两种类型:2D3D

<span lang="EN-US" style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">5<span style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">、功能电路测试

<span style="color: rgb(42, 51, 60); mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI"; mso-ascii-font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: 宋体;">功能电路测试是PCBA产品上市前的最后一次检测。与其他检测(如AOIAXIICT)不同,FCT旨在使UUT(被测单元)在模拟环境下工作,并使用输出数据检查其实际性能。

<span lang="EN-US" style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">6<span style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">、样品检验

<span style="color: rgb(42, 51, 60); mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI"; mso-ascii-font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: 宋体;">在批量生产和组装之前,PCB制造商和装配商通常会进行首样检查,以检查SMT设备是否已正确准备,以便在批量生产中可以避免真空喷嘴或排列问题,导致PCBA板生产出现问题,这被称为第一件检验。

<span lang="EN-US" style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">7<span style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">、飞针测试仪

<span style="color: rgb(42, 51, 60); mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI"; mso-ascii-font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: 宋体;">飞针探头适用于需要昂贵检测费用的高复杂度PCB的检查。飞针的设计和检查可以在一天内完成,组装成本相对较低。它能够检查安装在PCB上的部件的开路,短路和方向。此外,它在识别组件布局和对齐方面效果很好。

<span lang="EN-US" style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">8<span style="color: rgb(55, 71, 79); font-family: 宋体; font-weight: normal; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI";">、制造缺陷分析仪(ManufacturingDefect AnalyzerMDA

<span lang="EN-US" style="color: rgb(42, 51, 60); mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI"; mso-ascii-font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: 宋体;">MDA<span style="color: rgb(42, 51, 60); mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI"; mso-ascii-font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: 宋体;">的目的只是对板进行直观的测试,以揭示制造缺陷。由于大多数制造缺陷是简单的连接问题,所以MDA仅限于测量连续性。通常,测试仪将能够检测电阻,电容和晶体管的存在。还可以使用保护二极管来实现集成电路的检测,以指示组件是否正确放置。

<span lang="EN-US" style="color: rgb(51, 51, 51); font-family: 宋体; font-size: 18pt; mso-ascii-theme-font: minor-fareast; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: "Segoe UI"; mso-font-kerning: 18.0pt;"> 

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