• The reason why there is no copper in the hole of the multilayer circuit board and the improvement measures that have to be understood

    1. Drilling dust plug holes or thick holes. 2. There are bubbles in the potion when the copper is sinking, and the copper is not sinking in the hole. 3. There is circuit ink in the hole, the protective layer is not electrically connected, and there is no copper in the hole after etching. 4. The a...
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  • What is the characteristic impedance in a PCB? How to solve the impedance problem?

    With the upgrading of customer products, it gradually develops towards the direction of intelligence, so the requirements for PCB board impedance are becoming more and more stringent, which also promotes the continuous maturity of impedance design technology. Now the editor summarizes the impedan...
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  • What do customers need to know when choosing PCBA processing plant?

    What do customers need to know when choosing PCBA processing plant?

    PCBA manufacturers often ignore the hardships that need to work hard in this process, and more importantly, a kind of marketing thinking, if they want to stand out in the competition. In order to evaluate this point, we must firstly understand the customer’s ideas from the customer’s ...
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  • Why is Solder Paste Inspection important?

    Why is Solder Paste Inspection important?

    SPI or solder paste inspection is a technical procedure to analyze or inspect solder paste deposits in a printed circuit board or PCB. This analysis takes place during the manufacturing process. Solder paste inspection examines PCB defects like solder percentage, the quantity of solder, missing s...
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  • Conditions and requirements for PCBA storage in different stages

    PCBA不同阶段存放的条件和要求

    PCBA生产的过程需要经过几个存储阶段。SMT贴片加工完成后转入浸渍插件加工时,往往需要在插件加工前保存一定时间。PCBA板测试和成品组装后,经常有...
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  • Newest Fine Pitch PCB Assembly Solution

    最新的细间距PCB组装解决方案

    细间距 PCB 组装意味着组装 PCB,其中相邻 SMD 焊盘和焊球(BGA 引脚、IC 引脚、连接器引脚……)之间的中心到中心距离非常小。换句话说,元件在一块印刷电路板上靠得很近,高速和功能...
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  • Various problems encountered in the process of PCB design and production

    PCB设计生产过程中遇到的各种问题

    在PCB设计和生产过程中,总是会出现各种问题,例如PCB上的颜色变深、颗粒状触点、板弯曲等。当走线断了,或者焊锡只在上面时,就会发生开路。焊盘而不是元件引线上。在这种情况下,有...
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  • How to Design High-Frequency PCBs?

    如何设计高频PCB?

    如何设计高频PCB?首先,让我们了解最大的挑战——串扰。除了串扰,还要注意 PCB 线的信号发射。信号的外部发射是不受欢迎的,因为它会降低信号质量并对其他信号造成干扰。到...
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  • What are the benefits of PCBA samples for future mass production?

    PCBA样品对未来量产有什么好处?

    企业在电子OEM厂商和生产行业遇到紧急订单是很常见的,而PCBA打样的好处之一就是提高生产力和生产加工速度。无论是外包形式的PCBA技术的生产和工艺...
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  • What is Silkscreen on a PCB?

    PCB上的丝印是什么?

    PCB 上的丝印是第一层迹线,用作将组件放置在印刷电路板 (PCB) 上适当位置的参考指示器。Silkscreen PCB Silkscreen PCB 旨在帮助您区分 PCB 组件、测试点、警告符号和其他...
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  • 总结SMT过程中的主要原因并分析可行的解决方案

    在SMT加工生产过程中,很难避免SMT贴片机的抛料问题。抛料是指贴片机在生产过程中吸料后不粘料,而是将料抛入抛料箱或其他...
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  • What is Electronic Contract Manufacturing

    什么是电子合同制造

    电子合同制造 (ECM),也称为 EMS(电子制造服务),是指 OEM(原始设备制造商)将电气产品制造外包给 EMS 制造商。◆ 一站式解决方案,包括电气设计、PCB布局、元器件...
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