<div class="entry-content">
    <div class="jetpack-video-wrapper"><span class="embed-youtube" style="text-align:center; display: block;"><iframe
                class="youtube-player"
                src="https://www.youtube.com/embed/09JxK3_RqbY?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en&autohide=2&wmode=transparent"
                allowfullscreen="true"
                style="border: 0px; display: block; margin: 0px; width: 740px; height: 416.418px;"
                sandbox="allow-scripts allow-same-origin allow-popups allow-presentation"
                data-ratio="0.5627272727272727" data-width="1100" data-height="619"></iframe></span>
    </div>
    <div class="blog-content">
When using inductor consider also material, height, rotation .... Explained by Carmen Parisi.
    </div>
    
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://youtu.be/zf-pvHysroM">How to design perfect switching power supply</a></li>
            <li class="links-list-item"><a href="https://www.linkedin.com/in/carpar/">Carmen's LinkedIn</a></li>
        </ul>
    </div>  
</div>

Selecting Inductor For Switching Power Supply - Not everyone knows this #HighlightsRF

<div class="entry-content">
    <div class="jetpack-video-wrapper"><span class="embed-youtube" style="text-align:center; display: block;"><iframe
                class="youtube-player"
                src="https://www.youtube.com/embed/KKd_TkJRMAs?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en&autohide=2&wmode=transparent"
                allowfullscreen="true"
                style="border: 0px; display: block; margin: 0px; width: 740px; height: 416.418px;"
                sandbox="allow-scripts allow-same-origin allow-popups allow-presentation"
                data-ratio="0.5627272727272727" data-width="1100" data-height="619"></iframe></span>
    </div>
    <div class="blog-content">
        See how PCBs are made and assembled in the huge PCBWay factory in Shenzhen, China!
    </div>
    <div class="blog-content-chapters">
        <div>
            Chapters:
        </div>
        <ul class="chapters-list">
            <li class="chapters-list-item"><span class="chapters-time">00:00</span><span class="chapters-text">Intro</span></li>
            <li class="chapters-list-item"><span class="chapters-time">01:31</span><span class="chapters-text">Fabrication Data Generation</span></li>
            <li class="chapters-list-item"><span class="chapters-time">02:37</span><span class="chapters-text">Panel Cutting</span></li>
            <li class="chapters-list-item"><span class="chapters-time">03:17</span><span class="chapters-text">Inner Layers</span></li>
            <li class="chapters-list-item"><span class="chapters-time">04:18</span><span class="chapters-text">Lay-Up</span></li>
            <li class="chapters-list-item"><span class="chapters-time">05:13</span><span class="chapters-text">Pre-Pregs & Copper Foils</span></li>
            <li class="chapters-list-item"><span class="chapters-time">06:20</span><span class="chapters-text">Lamination</span></li>
            <li class="chapters-list-item"><span class="chapters-time">07:55</span><span class="chapters-text">Drilling</span></li>
            <li class="chapters-list-item"><span class="chapters-time">09:10</span><span class="chapters-text">PTH & Electroless Copper Deposition</span></li>
            <li class="chapters-list-item"><span class="chapters-time">10:13</span><span class="chapters-text">Imaging Outer Layers</span></li>
            <li class="chapters-list-item"><span class="chapters-time">11:54</span><span class="chapters-text">Plating</span></li>
            <li class="chapters-list-item"><span class="chapters-time">13:15</span><span class="chapters-text">Etching</span></li>
            <li class="chapters-list-item"><span class="chapters-time">14:38</span><span class="chapters-text">Automatic Optical Inspection (AOI)</span></li>
            <li class="chapters-list-item"><span class="chapters-time">15:29</span><span class="chapters-text">Solder Mask</span></li>
            <li class="chapters-list-item"><span class="chapters-time">18:24</span><span class="chapters-text">Surface Finish</span></li>
            <li class="chapters-list-item"><span class="chapters-time">19:50</span><span class="chapters-text">Silkscreen</span></li>
            <li class="chapters-list-item"><span class="chapters-time">20:50</span><span class="chapters-text">Outline</span></li>
            <li class="chapters-list-item"><span class="chapters-time">21:44</span><span class="chapters-text">E-Test & Final Inspection</span></li>
            <li class="chapters-list-item"><span class="chapters-time">23:33</span><span class="chapters-text">Assembly Process & Incoming Quality Control</span></li>
            <li class="chapters-list-item"><span class="chapters-time">25:30</span><span class="chapters-text">Stencil, Solder Paste, Pick 'n' Place</span></li>
            <li class="chapters-list-item"><span class="chapters-time">28:01</span><span class="chapters-text">Reflow & Inspection</span></li>
            <li class="chapters-list-item"><span class="chapters-time">29:28</span><span class="chapters-text">Through-Hole Assembly & Packaging</span></li>
            <li class="chapters-list-item"><span class="chapters-time">31:06</span><span class="chapters-text">Outro</span></li>
    </div>
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://www.pcbway.com/pcb-service.html">Manufacturing process</a></li>
            <li class="links-list-item"><a href="https://www.pcbway.com/assembly-process.html">SMT assembly process</a></li>
            
            <li class="links-list-item"><a href="https://fedevel.com/courses/advanced-digital-hardware-design">Advanced Digital Hardware Design course</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses/mixed-signal-hardware-design-with-kicad">Mixed-signal Hardware Design course</a></li>
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL courses</a></li>
        </ul>
    </div>  
</div>

How PCBs are Manufactured & Assembled (PCBWay Factory Tour) - Phil's Lab #120

<div class="entry-content">
    <div class="jetpack-video-wrapper"><span class="embed-youtube" style="text-align:center; display: block;"><iframe
                class="youtube-player"
                src="https://www.youtube.com/embed/bdhx7Ir_2Ws?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en&autohide=2&wmode=transparent"
                allowfullscreen="true"
                style="border: 0px; display: block; margin: 0px; width: 740px; height: 416.418px;"
                sandbox="allow-scripts allow-same-origin allow-popups allow-presentation"
                data-ratio="0.5627272727272727" data-width="1100" data-height="619"></iframe></span>
    </div>
    <div class="blog-content">
        See how placing a decoupling capacitor closer makes a difference. Thank you very much Eric Bogatin.
    </div>

    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="https://www.linkedin.com/in/eric-bogatin-368860/">Eric´s LinkedIn</a></li>
            <li class="links-list-item"><a href="https://youtu.be/ARwBwHZESOY">What Decoupling Capacitor Value To Use And Where To Place Them</a></li>
            
            <li class="links-list-item"><a href="https://fedevel.com/courses">FEDEVEL courses</a></li>
        </ul>
    </div>  
</div>

Watch How Capacitors Placement Makes a Big Difference #HighlightsRF

<div class="entry-content">
    <div class="blog-content">
        DDR3 mirroring is a feature of memory controller.<br><br>

        See the following text from <a href="http://www.jedec.org/sites/default/files/docs/4_20_19R20.pdf">DDR3 SDRAM Unbuffered DIMM Design Specification</a> (JEDEC website – Registration is required, page 17).<br><br>

        <i>Following pins are being mirrored: A3<->A4, A5<->A6, A7<->A8, BA0<->BA1.<br><br>

        “Since the cross-wired pins have no secondary functions, there is no problem in normal operation. Any data written is read the same way. There are limitations however. When writing to the internal registers with a “load mode” operation, the specific address is required. This requires the controller to know if the rank is mirrored or not. This requires a few rules. Mirroring is done on 2 rank modules and can only be done on the second rank. There is not a requirement that the second rank be mirrored. There is a bit assignment in the SPD that indicates whether the module has been designed with the mirrored feature or not. See the DDR3 UDIMM SPD specification for these details. The controller must read the SPD and have the capability of de-mirroring the address when accessing the second rank.”</i>
    </div>

    <div class="blog-content-img-wrapper">
        <img src="https://assets.fedevel.com/blog/2019/10/8ea2f-ddr3_mirroring_pcb_layout.jpg" alt="DDR3_mirroring_PCB_layout" />
    </div>

    <div class="blog-content-text">
        To confirm this, have a look on the following pictures from <a href="http://www.jedec.org/sites/default/files/docs/design/DDR3/PC3_12800_UDIMM_V07_RC_B0_20070529.zip">PC3-12800 UDIMM</a> layout where I have selected A8 signal:
    </div>
    <div class="blog-content-img-wrapper">
        <img src="https://assets.fedevel.com/blog/2019/10/b9f76-ddr3_mirroring_top_and_bottom_layout.jpg" alt="DDR3_mirroring_top_and_bottom_layout" />
    </div>
    
    <div class="blog-content-text">
        <i>Details of A8 Top and Bottom Layer:</i>
    </div>
    <div class="blog-content-img-wrapper">
        <img src="https://assets.fedevel.com/blog/2019/10/b37e2-ddr3_mirroring_top_layout1.jpg" alt="DDR3_mirroring_top_layout" />
    </div>
    <div class="blog-content-img-wrapper">
        <img src="https://assets.fedevel.com/blog/2019/10/47294-ddr3_mirroring_bottom_layout.jpg" alt="DDR3_mirroring_bottom_layout" />
    </div>
    
    <div class="blog-content-text">
        <i>Screenshot from schematic for D1 and D9:</i>
    </div>
    <div class="blog-content-img-wrapper">
        <img src="https://assets.fedevel.com/blog/2019/10/9bb0b-ddr3_mirroring_schematic.jpg" alt="DDR3_mirroring_schematic" />
    </div>


    <div class="blog-content-text">
        Components D1 and D9 are listed in the BOM with same part number.
    </div>

   
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="http://www.jedec.org/sites/default/files/docs/4_20_19R20.pdf">DDR3 SDRAM Unbuffered DIMM Design Specification</a></li>
            <li class="links-list-item"><a href="http://www.jedec.org/sites/default/files/docs/design/DDR3/PC3_12800_UDIMM_V07_RC_B0_20070529.zip">PC3-12800 UDIMM</a></li>
        </ul>
    </div>  
</div>

DDR3 memory mirroring – PCB layout

<div class="entry-content">
    <div class="jetpack-video-wrapper"><span class="embed-youtube" style="text-align:center; display: block;"><iframe
                class="youtube-player"
                src="https://www.youtube.com/embed/SxeW_-UcZqk?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en&autohide=2&wmode=transparent"
                allowfullscreen="true"
                style="border: 0px; display: block; margin: 0px; width: 740px; height: 416.418px;"
                sandbox="allow-scripts allow-same-origin allow-popups allow-presentation"
                data-ratio="0.5627272727272727" data-width="1100" data-height="619"></iframe></span>
    </div>
    <div class="blog-content">
        This video explains how to generate a STEP file (3D output) from Altium Designer. It also explains how to add mounting holes into the 3D model.
    </div>
    <div class="blog-content-links">
        <div>
            Links:
        </div>
        <ul class="links-list">
            <li class="links-list-item"><a href="http://www.cadexchanger.com/">3D CAD software from this video (CAD Exchanger)</a></li>
        </ul>
    </div>  
</div>


Altium Designer – Generating 3D CAD File

<div class="entry-content">
    <div class="jetpack-video-wrapper"><span class="embed-youtube" style="text-align:center; display: block;"><iframe
                class="youtube-player"
                src="https://www.youtube.com/embed/QlNgoS3SEME?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en&autohide=2&wmode=transparent"
                allowfullscreen="true"
                style="border: 0px; display: block; margin: 0px; width: 740px; height: 416.418px;"
                sandbox="allow-scripts allow-same-origin allow-popups allow-presentation"
                data-ratio="0.5627272727272727" data-width="1100" data-height="619"></iframe></span>
    </div>
    <div class="blog-content">
        This video explains how to do differential pair routing and how to setup rules for different impedances in Altium Designer PCB layout.
    </div>
</div>


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Selecting Inductor For Switching Power Supply - Not everyone knows this #HighlightsRF

How PCBs are Manufactured & Assembled (PCBWay Factory Tour) - Phil's Lab #120

Watch How Capacitors Placement Makes a Big Difference #HighlightsRF

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