<smtpad />

Overview

The <smtpad /> element is used to represent a surface mount pad.

export default () => (
  <board width="10mm" height="10mm">
    <chip name="U1" footprint={
      <footprint>
        <smtpad
          pcbX="0mm"
          pcbY="0mm"
          layer="top"
          shape="rect"
          width="5mm"
          height="5mm"
          portHints={["pin1"]}
        />
      </footprint>
    } />
  </board>
)

SMT Pad Shapes

There are 4 main types of smtpads:

• rect - A rectangular pad
• circle - A circular pad
• pill - A pill-shaped pad
• polygon - A custom polygon-shaped pad defined by a list of points

Each smtpad shape has different properties.

Properties

Property	Shape	Description
width	rect, pill	The width of the pad
height	rect, pill	The height of the pad
radius	circle, pill	The radius of the pad (for circle) or corner radius (for pill)
points	polygon	An array of { x, y } coordinates describing the polygon vertices
ccwRotation	rect	Counter-clockwise rotation angle in degrees
portHints	all	Array of port names that this pad connects to
pcbX	all	X position of the pad center on the PCB
pcbY	all	Y position of the pad center on the PCB
layer	all	Which layer the pad is on ("top" or "bottom")

Example: Polygon Pad

Here’s an example of using a polygon smtpad

export default () => (
  <board width="10mm" height="10mm">
    <chip name="U1" footprint={
      <footprint>
        <smtpad 
          pcbX="0mm"
          pcbY="0mm"
          shape="polygon" 
          layer="top" 
          portHints={["pin1"]} 
          points={[ 
            { x: -2, y:  2 }, 
            { x:  1, y:  2 }, 
            { x:  2, y:  1 }, 
            { x:  2, y: -1 }, 
            { x:  1, y: -2 }, 
            { x: -2, y: -2 }, 
          ]} 
        />
      </footprint>
    } />
  </board>
)