For example, from the perspective of production process testing, IC testing is generally divided into chip testing, finished product testing, and inspection testing. Unless otherwise required, chip testing generally only conducts DC testing, and finished product testing can have either AC testing or DC testing. In more cases, both tests are available. The following is about EM-888 PCB related, I hope to help you better understand EM-888 PCB.
The aperture ratio of PCB is also called the ratio of thickness to diameter, which refers to the thickness of the board / aperture. If the aperture ratio exceeds the standard, the factory will not be able to process it. The limit of the aperture ratio cannot be generalized. For example, via holes, laser blind holes, buried holes, solder mask plug holes, resin plug holes, etc. are different. The aperture ratio of the via hole is 12: 1, which is a good value. The industry limit is currently 30: 1. The following is about 8MM Thick PCB related, I hope to help you better understand 8MM Thick PCB.
High-frequency substrates, satellite systems, mobile phone receiving base stations and other communication products must use high-frequency circuit boards, which will inevitably develop rapidly in the next few years, and high-frequency substrates will be in large demand. The following is about Mixed HDI PCB of RO4003C related, I hope to help you better understand Mixed HDI PCB of RO4003C.
