16. Current and Trace Temperatures
16.1. Fundamental Concepts
The resistance of a conductor is proportional to the resistivity of the material and inversely proportional to its cross-sectional area. So any conductor (or wire or trace) has some resistance (we covered this in Chapter 4). For copper wires, tables exist that provide resistance per unit length as a function of wire gauge. The wire gauge is standardized and known as the AWG, or American wire gauge. These tables are provided in almost every electricity and physics handbook, and a good discussion of the table and its origin can be found on the Web.
There are various ways to equate the ...
Get PCB Currents: How They Flow, How They React now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
