User Guide

ClickthereforeintheSMDicon,andtype
0.82 ←
on the command line. Create two vertical rows as well. The SMDs can
berotatedin90degreeincrementswiththerightmousebutton.
PlacingtheSMDs
The Roundness parameter (CHANGE command) specifies whether
curves should be given to the corners of the solder pads. The default
valueis0%,whichmeansthatthereisnorounding.
Seealsothesectiononpage 95.
If a square SMD is selected, and if Roundness is defined as 100%, the re
-
sult is a round SMD, as is needed when creating ball grid array housings
(BGA). Roundness is usually chosen to be 0% when a package is being
defined. A general value can be specified in the Design Rules if slightly
roundedsolderpadsarepreferred.
Drag the 4 SMD rows into the correct position. You select a finer
GRID, such as 0.05 mm, for this. The commands GROUP and MOVE,
followed by a right mouse click on the marked group can be used to
drag the marked group into the correct position. The size of the central
SMDs in the upper row can be altered with the CHANGE SMD com
-
mand. Since the value 0.8 x 3.4 is not contained in the menu as standard,
type
change smd0.83.4 ←
156
EAGLEManual