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PCB Surface Finishes Comparison: HASL LF, OSP, & ENIG

 A PCB surface finish is a coating between a component and a bare board PCB. It is applied for two basic reasons: to ensure solderability, and to protect exposed copper circuitry. As there are many types of surface finishes, selecting the right one is no easy task, especially as surface mounts have become more complex and regulations such as RoHS and WEEE have changed industry standards. Criteria Consider the following: Lead vs. Lead free* Component Type* Cost * Reworkability Productivity Environment HASL and lead-free HASL For decades HASL was one of the most popular surface finish choices. Yet, in recent years, manufacturers have realized its limitations. While a surface finish may be low cost and robust, fundamental changes in the PCB industry—namely, the rise complex surface mount technology—have exposed its shortcomings. HASL leaves uneven surfaces and is not suitable for fine pitch components. Although it does come in lead-free, there are other lead-free options which will ...
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RF PCB – Radio Frequency Printed Circuit Boards

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  Radio frequency printed circuit boards ( RF PCBs ) are an exciting, fast growing sector of the PCB manufacturing industry. They are also incredibly complex with a dizzying range of options. The engineers at San Francisco Circuits can assist you with every step of the fabrication and assembly process, including material selection and key RF PCB manufacturing challenges to be aware of. What is an RF Circuit Board? In general terms, the PCB industry considers an RF circuit board to be any high frequency PCB that operates above 100MHz. Within the radio frequency class, anything above 2GHz is a Microwave PCB. What is a Microwave PCB? The main difference between RF circuit boards and Microwave PCBs is in the radio frequency in which they operate. Microwave PCBs are classified as any RF circuit board operating above 2GHz. RF circuit boards and Microwave PCBs are used for communication signals in any application that requires receiving and transmitting radio signals. For example, some co...
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PCB Design, Manufacturing & Assembling

In this article, you'll get to know the fundamentals of PCB manufacturers and how our company "PCBSKY" is unique from other manufacturers in China. What are the three main aspects of the PCB industry?   According to our experience of more than 10 years as the leading PCB Company in the industry, we can easily write that three main aspects in the PCB industry for which most clients look for are: PCB Design PCB Manufacturing  PCB Assembly Design, Manufacturing, and assembling of PCB is a systematic method for examining the parts and components which is needed to execute. It included obtaining costs of a commodity and seeks to cut costs before actual development begins. There are specific manufacturing, design, and assembling principles required to be following during the PCB process execution of any electrical or electronics part. Eventually, a final design concludes the series with a review among the most common issues related to the PC Board or Printed Circuit Board....
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