Career Center | Santa Cruz, California USA | Production,Quality Control
Soldering Technician, Touch-up for PCBAs Perform hand soldering and touch-up rework for Printed Circuit Board Assemblies (PCBA), cables and associated equipment. Inspect PCBA for defects, loose connections, missing components. Solder to perform r
Technical Library | 2019-06-26 23:21:49.0
Copper-filled micro-vias are a key technology in high density interconnect (HDI) designs that have enabled increasing miniaturization and densification of printed circuit boards for the next generation of electronic products. Compared with standard plated through holes (PTHs) copper filled vias provide greater design flexibility, improved signal performance, and can potentially help reduce layer count, thus reducing cost. Considering these advantages, there are strong incentives to optimize the via filling process. This paper presents an innovative DC acid copper via fill formulation, for VCP (Vertical Continues Plating) applications which rapidly fills vias while minimizing surface plating.
Technical Library | 2019-10-10 00:26:28.0
Voids are a plague to our electronics and must be eliminated! Over the last few years we have studied voiding in solder joints and published three technical papers on methods to "Fill the Void." This paper is part four of this series. The focus of this work is to mitigate voids for via in pad circuit board designs. Via holes in Quad Flat No-Lead (QFN) thermal pads create voiding issues. Gasses can come out of via holes and rise into the solder joint creating voids. Solder can also flow down into the via holes creating gaps in the solder joint. One method of preventing this is via plugging. Via holes can be plugged, capped, or left open. These via plugging options were compared and contrasted to each other with respect to voiding. Another method of minimizing voiding is through solder paste stencil design. Solder paste can be printed around the via holes with gas escape routes. This prevents gasses from via holes from being trapped in the solder joint. Several stencil designs were tested and voiding performance compared and contrasted. In many cases voiding will be reduced only if a combination of mitigation strategies are used. Recommendations for combinations of via hole plugging and stencil design are given. The aim of this paper is to help the reader to "Fill the Void."
Career Center | Santa Clara, California USA | Engineering,Quality Control
NBS Inc. is a PCB contract manufacturer located in Santa Clara, CA. We are currently seeking to fill a position for a Quality Engineer. The ideal candidate will possess the ability to act in a supervisory role giving direction to personnel as it rela
Technical Library | 2021-05-26 00:53:26.0
This paper describes a copper electroplating enabling technology for filling microvias. Driven by the need for faster, smaller and higher performance communication and electronic devices, build-up technology incorporating microvias has emerged as a viable multilayer printed circuit manufacturing technology. Increased wiring density, reduced line widths, smaller through-holes and microvias are all attributes of these High Density Interconnect (HDI) packages. Filling the microvias with conductive material allows the use of stacked vias and via in pad designs thereby facilitating additional packaging density. Other potential design attributes include thermal management enhancement and benefits for high frequency circuitry. Electrodeposited copper can be utilized for filling microvias and provides potential advantages over alternative via plugging techniques. The features, development, scale up and results of direct current (DC) and periodic pulse reverse (PPR) acid copper via filling processes, including chemistry and equipment, are described.
Industry Directory | Manufacturer
FINE PITCH ASSEMBLY. SIMPLY BETTER AT WHAT WE DO.
Technical Library | 2008-08-28 22:50:11.0
The increasing use of lead-free solder has introduced a new set of process parameters when setting up wave solder equipment for effective soldering. Determining the proper flow characteristics of the solder wave for adequate hole fill is an essential step in achieving a reliable process. A variety of solder waves exist in the industry; each with advantages and disadvantages when performing lead-free wave soldering. One way to ensure adequate hole-fill is by increasing contact time at the Chip Wave.
Visit the ADS200 Webpage for pricing and more information. https://www.paceworldwide.com/products/soldering-stations/digital-control-soldering-systems/ads200-accudrive-production-soldering-station-with-td200 The New ADS200 AccuDrive™ Production Sold
With the development of miniaturization of assembly components, the layout area and pattern design area of PCBs have also been continuously reduced, and PCB manufacturers are constantly updating the production process to conform to the development tr
Industry News | 2017-03-29 07:48:12.0
Aqua Klean Systems today announced that Utah-based EMS Solutions placed an order for its T-12 Water Soluble Cleaner and DI Recirculating System during the recent IPC APEX EXPO. EMS Solutions is a premier regional EMS provider specializing in printed circuit board assemblies (PCBAs) for SMT and thru hole, RoHS and non-RoHS manufacturing, IPC-A-610 II & III manufacturing standards, harness and cable assemblies, and more.
