how to use inkscape to make tabletop maps

But, material selection is also driven by some economic factors. These key properties include Tg (glass transition temperature er (relative dielectric constant) Tan f (loss tangent) DBV (dielectric breakdown voltage) and Water Absorption (WA). Laminate Selection: As noted in the references at the end of this blog, the key factors in laminate selection have to do with the type of product being designed and the key properties of the laminates that best suit that product design. The ultimate goal should always be to have enough layers to make the design electrically sound but also have it be the most cost-efficient from a manufacturing standpoint. In some cases, the layer count can be too low which results in malfunctioning PCBs. Most often, this is due to poor layout and routing, incorrect component placement and incorrect assignment of power and ground layers.

High-speed digital designs and more complex designs need more than two layers but it is often the case that the layer count is higher than it needs to be. Most of the time, it is possible to implement RF and microwave designs in two or three layers. Layer Count: Obviously, the greater the number of layers, the more expensive it is to design and produce a board. This article will address the various factors that contribute to the overall cost of a PCB and the trade-off decisions that go into achieving the right balance between price and cost while ensuring that all elements within a PCB are right the first time. The lowest-priced PCB is often scrapped during final assembly due to poor PCB quality. Beyond design, total PCB cost includes the cost of fabrication, assembly, rework, test, repair, scrap, replacement and field service costs. Often, PCB suppliers-fabricators and assemblers–are chosen based on the price of the PCB delineated in a purchase order rather than on the ownership cost of that PCB.

Successful PCB product realization is a carefully orchestrated balance of trade-offs between design considerations and overall cost of the product. Some of these effects are more visible or tangible than others but if the “dollars and cents” elements are weighted along with the design decisions it is more likely that that the resulting product will be both economically efficient and well-engineered.Īs with most everything in life, price and cost are not the same things. Every decision made in the design process of any PCB or system has an economic as well as an engineering effect.

How to use inkscape to make tabletop maps