Used SMT Equipment | Pick and Place/Feeders
Universal Genesis GI14 Pick and Place System With PTF JUST ADDED TO AUCTION CATALOG. Auction running now. Please see www.xlineassets.com for details. Going Going Gone - Don't delay!
Technical Library | 2019-02-13 13:45:11.0
Development of information and telecommunications network is outstanding in recent years, and it is required for the related equipment such as communication base stations, servers and routers, to process huge amount of data in no time. As an electrical signal becomes faster and faster, how to prevent signal delay by transmission loss is a big issue for Printed Circuit Boards (PCB) loaded on such equipments. There are two main factors as the cause of transmission loss; dielectric loss and conductor loss. To decrease the dielectric loss, materials having low dielectric constant and low loss tangent have been developed. On the other hand, reducing the surface roughness of the copper foil itself to be used or minimizing the surface roughness by modifying surface treatment process of the conductor patterns before lamination is considered to be effective in order to decrease the conductor loss. However, there is a possibility that reduction in the surface roughness of the conductor patterns will lead to the decrease in adhesion of conductor patterns to dielectric resin and result in the deterioration of reliability of PCB itself. In this paper, we will show the evaluation results of adhesion performance and electrical properties using certain type of dielectric material for high frequency PCB, several types of copper foil and several surface treatment processes of the conductor patterns. Moreover, we will indicate a technique from the aspect of surface treatment process in order to ensure reliability and, at the same time, to prevent signal delay at the signal frequency over 20 GHz.
Ward Hill Marketing is an outsource technical marketing firm for manufacturing technology companies. We pride ourselves on pro-active program management, tight budget, and schedule control--which gives you the freedom and control to do your job.
Camstar is the leading provider of Collaborative Manufacturing Execution (CME) solutions for global manufacturers. Only Camstar, with customers around the world, enables manufacturers to fully leverage Live production information across the enterpris
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Rakon is a world leader in the supply and manufacture of high precision, high reliability frequency control solutions. Actively involved in many scientific programs around the world.
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Founded in 1997 by veterans of the audiovisual industry, Aurora Multimedia uses state-of-the-art technologies to define the cutting edge.
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Turning critical PCB designs into high-quality PCBAs through years of excellence in innovation & evolution.
Used SMT Equipment | Adhesive Dispensers
TH-2004L1 Rotary dispensing machine Feature 1. Can as your require to setting before the delay time, after the delay time, dispensing time, motor speed, even on the glue, non-contact trace 2. Use imported Slide cylinder, so that the machine running
Used SMT Equipment | In-Circuit Testers
Universal Counter The Agilent-Hp 5315A Universal Counter measures signals over 0.1Hz to 100MHz range. The unit measures Period: 10 ns to 105 Sec; Time Interval: 100 ns to 105 Sec; Time Interval Average: 0 ns to 105 Sec; Time Interval Delay: holdoff
Used SMT Equipment | General Purpose Test & Measurement
The 4396A provides excellent RF vector network and spectrum measurements for lab and production applications. Gain, phase, group delay, distortion, spurious, CN, and noise measurements often required for evaluating components and circuits can be mea
