8/31/2023 0 Comments Common resistor values![]() In general, you can assume the code is in imperial units, but the dimensions used are in mm. Confusingly, even when the imperial naming convention is used, the metric dimensions are often used during the design of the printed circuit boards (PCBs). In general, the imperial code is used more often to indicate the package size. The SMD package code can be given in either imperial or metric units. So, the imperial code 0603 indicates a length of 0.060" and a width of 0.030". This code contains the width and height of the package. ![]() The size of SMD resistors is indicated by a numerical code, such as 0603. The shape and size of surface mount resistors are standardized, with most manufacturers using the JEDEC standards. It also provides some recommended land patterns for SMD components for solder attach to PCBs. This page provides information on the dimensions of SMD, axial, and MELF packages. The most commonly used today are the rectangular surface mount (SMD) resistors, but also the good old axial resistor is still used extensively in through-hole designs. ![]() Resistors are available in a large number of different package styles and sizes.
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