Personally I use the IPC-compliant footprints. As the designer you need to pick the option that works best for you. Similarly some work better for hand-soldering and some work better for reflow soldering. Like I said before some footprints will work better for high-density, and others will work better for low-density. There will often be minute differences between the manufacturer's suggested footprint and the IPC versions, but they will almost always be close to either the L, N, or M options.Īny one of the footprints will work provided it was created for the package size you are using. The first image you show appears to be either Least or Nominal (I'm guessing Nominal), whereas the second image you show looks more like the Most option. This is ideal for low-density boards which you plan to hand-solder. Nominal is slightly larger, and if you use the Most option the component pads take up the most space. If you use the Least option the component pads take up the least amount of space, which is great for high-density boards. IPC generally has three different variants for every component footprint - L, N, and M, which stand for Least, Nominal, and Most. Draw in some lines to give an indication of the part size. Press 'Tab' to set the options, and set it to 0.2mm. Switch to the Top Overlay layer, and press 'P' 'L' (for Place Line). Go back into 2D mode '2' to place the silk screen. and check that the pads look like they're placed correctly. Do the left one first (at -1.5, 3.0), then the middle one (at 0.0, 3.0), then the right one (at 1.5, 3.0). Now place the three pads on the document. Set the Designator to 1, and the Layer to Top Layer. Set the X and Y size of the pad, and make it rectangular. Press 'P' 'P' (for Place Pad), then press 'Tab' to bring up the pad options. According to the datasheet, the pads for the connector are 0.85mm x 7.00mm, and are placed 1.50mm apart. Now drag the purple rectangle by the middle of its lower edge, and snap it to the origin. Set the X rotation to 90º and the Standoff height to 2.9mm.Ĭlick OK, and place the model on the document. Click 'Generic STEP Model', then 'Embed STEP Model' and select the file. Press 'O' 'B' to bring up the board options. Since the component is specified in mm in the datasheet, switch to metric units. Make sure that the pin 1 indicator will be visible even after the part is placed on the board.Download the STEP (.stp) model from the Molex web site. You also want to have something on the silkscreen (like a round dot or a numeral "1") to indicate pin 1. Probably you want to indicate at least the rough size of the outer housing of the connector to aid in placing other nearby parts. Then draw whatever you want on the silkscreen layer. You might want to put pin 1 at location 0,0 or you might want to put the middle pin at 0,0, whichever you prefer. Make sure they're numbered 1, 2, and 3, in the correct order. Place them in a row spaced 1.5 mm center to center, as shown in the drawing. Use a 0.5 mm grid to make it easier to place your pads.Īdd 3 rectangular pads with the dimensions given in the Molex drawing. It's just one rectangular pad for each pin of the connector (I think 3 in your case). In the upper center you'll see the recommended footprint. Then click through to the PDF sales drawing. Download the STEP (.stp) model from the Molex web site.
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