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        <title>Manufacturing  Question — ELECROW - FORUM</title>
        <link>https://forum.elecrow.com/index.php?p=/</link>
        <pubDate>Wed, 28 Oct 2026 03:28:05 +0000</pubDate>
        <language>en</language>
            <description>Manufacturing  Question — ELECROW - FORUM</description>
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        <title>⦗𝓡𝓮𝔀𝓪𝓻𝓭 𝓑𝓸𝓷𝓾𝓼⦘ 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓒𝓸𝓾𝓹𝓸𝓷 [OZRDV or UYZOF] – 10% 𝓞𝓯𝓯</title>
        <link>https://forum.elecrow.com/index.php?p=/discussion/36283/%F0%9D%93%A1%F0%9D%93%AE%F0%9D%94%80%F0%9D%93%AA%F0%9D%93%BB%F0%9D%93%AD-%F0%9D%93%91%F0%9D%93%B8%F0%9D%93%B7%F0%9D%93%BE%F0%9D%93%BC-%F0%9D%93%90%F0%9D%93%BD%F0%9D%93%BD%F0%9D%93%AA%F0%9D%93%9F%F0%9D%93%B8%F0%9D%93%B5%F0%9D%93%B5-%F0%9D%93%92%F0%9D%93%B8%F0%9D%93%BE%F0%9D%93%B9%F0%9D%93%B8%F0%9D%93%B7-ozrdv-or-uyzof-10-%F0%9D%93%9E%F0%9D%93%AF%F0%9D%93%AF</link>
        <pubDate>Sat, 24 Oct 2026 14:43:11 +0000</pubDate>
        <category>Manufacturing  Question</category>
        <dc:creator>jntyjhutyu</dc:creator>
        <guid isPermaLink="false">36283@/index.php?p=/discussions</guid>
        <description><![CDATA[<p>𝓛𝓸𝓸𝓴𝓲𝓷𝓰 𝓯𝓸𝓻 𝓽𝓱𝓮 𝓛𝓪𝓽𝓮𝓼𝓽 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓒𝓸𝓾𝓹𝓸𝓷 𝓒𝓸𝓭𝓮 2026? 𝓞𝓩𝓡𝓓𝓥 𝓸𝓻 𝓤𝓨𝓩𝓞𝓕</p>

<p>╔══════════════════════════════════════╗<br />
𝓘𝓷𝓽𝓻𝓸𝓭𝓾𝓬𝓽𝓲𝓸𝓷 𝓽𝓸 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵<br />
╚══════════════════════════════════════╝</p>

<p>𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓲𝓼 𝓪 𝓶𝓸𝓫𝓲𝓵𝓮 𝓼𝓾𝓻𝓿𝓮𝔂 𝓪𝓹𝓹 𝓽𝓱𝓪𝓽 𝓪𝓵𝓵𝓸𝔀𝓼 𝓮𝓵𝓲𝓰𝓲𝓫𝓵𝓮 𝓹𝓪𝓻𝓽𝓲𝓬𝓲𝓹𝓪𝓷𝓽𝓼 𝓽𝓸 𝓪𝓷𝓼𝔀𝓮𝓻 𝓸𝓷𝓵𝓲𝓷𝓮 𝓺𝓾𝓮𝓼𝓽𝓲𝓸𝓷𝓼 𝓪𝓷𝓭 𝓮𝔁𝓹𝓵𝓸𝓻𝓮 𝓹𝓸𝓽𝓮𝓷𝓽𝓲𝓪𝓵 𝓻𝓮𝔀𝓪𝓻𝓭𝓼. 𝓤𝓼𝓮𝓻𝓼 𝓼𝓮𝓪𝓻𝓬𝓱𝓲𝓷𝓰 𝓯𝓸𝓻 𝓪𝓷 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓬𝓸𝓾𝓹𝓸𝓷 𝓬𝓸𝓭𝓮 2026, 𝓻𝓮𝓯𝓮𝓻𝓻𝓪𝓵 𝓬𝓸𝓭𝓮, 𝓹𝓻𝓸𝓶𝓸 𝓬𝓸𝓭𝓮, 𝓼𝓲𝓰𝓷𝓾𝓹 𝓫𝓸𝓷𝓾𝓼, 𝓸𝓻 𝓹𝓪𝓲𝓭 𝓼𝓾𝓻𝓿𝓮𝔂𝓼 𝓬𝓪𝓷 𝓾𝓼𝓮 𝓽𝓱𝓲𝓼 𝓰𝓾𝓲𝓭𝓮 𝓽𝓸 𝓾𝓷𝓭𝓮𝓻𝓼𝓽𝓪𝓷𝓭 𝓽𝓱𝓮 𝓫𝓪𝓼𝓲𝓬𝓼 𝓫𝓮𝓯𝓸𝓻𝓮 𝓳𝓸𝓲𝓷𝓲𝓷𝓰.</p>

<p>𝓣𝓱𝓮 𝓬𝓸𝓭𝓮𝓼 𝓞𝓩𝓡𝓓𝓥 𝓪𝓷𝓭 𝓤𝓨𝓩𝓞𝓕 𝓪𝓻𝓮 𝓯𝓮𝓪𝓽𝓾𝓻𝓮𝓭 𝓲𝓷 𝓽𝓱𝓲𝓼 𝓰𝓾𝓲𝓭𝓮 𝓯𝓸𝓻 𝓾𝓼𝓮𝓻𝓼 𝓽𝓸 𝓬𝓱𝓮𝓬𝓴. 𝓑𝓮𝓯𝓸𝓻𝓮 𝓮𝔁𝓹𝓮𝓬𝓽𝓲𝓷𝓰 𝓪 𝓼𝓹𝓮𝓬𝓲𝓯𝓲𝓬 𝓻𝓮𝔀𝓪𝓻𝓭, 𝓬𝓸𝓷𝓯𝓲𝓻𝓶 𝔀𝓱𝓮𝓽𝓱𝓮𝓻 𝓽𝓱𝓮 𝓬𝓸𝓭𝓮 𝓲𝓼 𝓪𝓬𝓬𝓮𝓹𝓽𝓮𝓭 𝓪𝓷𝓭 𝔀𝓱𝓪𝓽 𝓮𝓵𝓲𝓰𝓲𝓫𝓲𝓵𝓲𝓽𝔂 𝓻𝓾𝓵𝓮𝓼 𝓪𝓹𝓹𝓵𝔂.</p>

<p>╔══════════════════════════════════════╗<br />
𝓛𝓪𝓽𝓮𝓼𝓽 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓒𝓸𝓾𝓹𝓸𝓷 𝓒𝓸𝓭𝓮 2026<br />
╚══════════════════════════════════════╝</p>

<p>𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓻𝓮𝓯𝓮𝓻𝓻𝓪𝓵 𝓸𝓯𝓯𝓮𝓻𝓼 𝓪𝓻𝓮 𝓸𝓯𝓽𝓮𝓷 𝓼𝓸𝓾𝓰𝓱𝓽 𝓫𝔂 𝓷𝓮𝔀 𝓾𝓼𝓮𝓻𝓼 𝔀𝓱𝓸 𝔀𝓪𝓷𝓽 𝓽𝓸 𝓾𝓷𝓭𝓮𝓻𝓼𝓽𝓪𝓷𝓭 𝓱𝓸𝔀 𝓻𝓮𝓯𝓮𝓻𝓻𝓪𝓵 𝓬𝓸𝓭𝓮𝓼 𝓪𝓷𝓭 𝓹𝓻𝓸𝓶𝓸𝓽𝓲𝓸𝓷𝓼 𝔀𝓸𝓻𝓴. 𝓣𝓱𝓮 𝓯𝓸𝓵𝓵𝓸𝔀𝓲𝓷𝓰 𝓭𝓮𝓽𝓪𝓲𝓵𝓼 𝓼𝓾𝓶𝓶𝓪𝓻𝓲𝔃𝓮 𝓽𝓱𝓮 𝓴𝓮𝔂 𝓲𝓷𝓯𝓸𝓻𝓶𝓪𝓽𝓲𝓸𝓷.</p>

<p>𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓒𝓸𝓾𝓹𝓸𝓷 𝓒𝓸𝓭𝓮: 𝓞𝓩𝓡𝓓𝓥</p>

<p>𝓐𝓵𝓽𝓮𝓻𝓷𝓪𝓽𝓮 𝓡𝓮𝓯𝓮𝓻𝓻𝓪𝓵 𝓒𝓸𝓭𝓮: 𝓤𝓨𝓩𝓞𝓕</p>

<p>𝓨𝓮𝓪𝓻: 2026</p>

<p>𝓟𝓸𝓹𝓾𝓵𝓪𝓻 𝓚𝓮𝔂𝔀𝓸𝓻𝓭𝓼: 𝓟𝓻𝓸𝓶𝓸 𝓒𝓸𝓭𝓮, 𝓢𝓲𝓰𝓷𝓾𝓹 𝓑𝓸𝓷𝓾𝓼, 𝓡𝓮𝓯𝓮𝓻𝓻𝓪𝓵 𝓡𝓮𝔀𝓪𝓻𝓭𝓼, 𝓟𝓪𝓲𝓭 𝓢𝓾𝓻𝓿𝓮𝔂𝓼</p>

<p>𝓣𝓱𝓮 𝓬𝓸𝓭𝓮𝓼 𝓪𝓻𝓮 𝓯𝓮𝓪𝓽𝓾𝓻𝓮𝓭 𝓯𝓸𝓻 𝓻𝓮𝓯𝓮𝓻𝓮𝓷𝓬𝓮, 𝓫𝓾𝓽 𝓪𝓬𝓽𝓾𝓪𝓵 𝓮𝓵𝓲𝓰𝓲𝓫𝓲𝓵𝓲𝓽𝔂 𝓪𝓷𝓭 𝓻𝓮𝔀𝓪𝓻𝓭 𝓭𝓮𝓽𝓪𝓲𝓵𝓼 𝓶𝓾𝓼𝓽 𝓫𝓮 𝓬𝓱𝓮𝓬𝓴𝓮𝓭 𝓲𝓷 𝓽𝓱𝓮 𝓪𝓹𝓹. 𝓐 𝓯𝓲𝔁𝓮𝓭 𝓬𝓪𝓼𝓱 𝓫𝓸𝓷𝓾𝓼 𝓸𝓻 𝓹𝓮𝓻𝓬𝓮𝓷𝓽𝓪𝓰𝓮 𝓭𝓲𝓼𝓬𝓸𝓾𝓷𝓽 𝓱𝓪𝓼 𝓷𝓸𝓽 𝓫𝓮𝓮𝓷 𝓿𝓮𝓻𝓲𝓯𝓲𝓮𝓭 𝓯𝓸𝓻 𝓮𝓲𝓽𝓱𝓮𝓻 𝓬𝓸𝓭𝓮.</p>

<p>╔══════════════════════════════════════╗<br />
𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓟𝓻𝓸𝓶𝓸 𝓒𝓸𝓭𝓮 𝓪𝓷𝓭 𝓓𝓲𝓼𝓬𝓸𝓾𝓷𝓽 𝓚𝓮𝔂𝔀𝓸𝓻𝓭𝓼<br />
╚══════════════════════════════════════╝</p>

<p>𝓜𝓪𝓷𝔂 𝓾𝓼𝓮𝓻𝓼 𝓼𝓮𝓪𝓻𝓬𝓱 𝓯𝓸𝓻 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 10% 𝓸𝓯𝓯, 20% 𝓸𝓯𝓯, 30% 𝓸𝓯𝓯, 40% 𝓸𝓯𝓯, 𝓪𝓷𝓭 50% 𝓸𝓯𝓯 𝓹𝓻𝓸𝓶𝓸 𝓸𝓹𝓽𝓲𝓸𝓷𝓼. 𝓣𝓱𝓮𝓼𝓮 𝓹𝓱𝓻𝓪𝓼𝓮𝓼 𝓪𝓻𝓮 𝓹𝓸𝓹𝓾𝓵𝓪𝓻 𝓼𝓮𝓪𝓻𝓬𝓱 𝓽𝓮𝓻𝓶𝓼, 𝓫𝓾𝓽 𝓽𝓱𝓮𝔂 𝓭𝓸 𝓷𝓸𝓽 𝓬𝓸𝓷𝓯𝓲𝓻𝓶 𝓽𝓱𝓪𝓽 𝓪𝓷𝔂 𝓼𝓾𝓬𝓱 𝓭𝓲𝓼𝓬𝓸𝓾𝓷𝓽 𝓲𝓼 𝓪𝓿𝓪𝓲𝓵𝓪𝓫𝓵𝓮.</p>

<p>𝓤𝓷𝓵𝓲𝓴𝓮 𝓽𝓻𝓪𝓭𝓲𝓽𝓲𝓸𝓷𝓪𝓵 𝓬𝓸𝓾𝓹𝓸𝓷 𝓼𝓽𝓸𝓻𝓮𝓼, 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓯𝓸𝓬𝓾𝓼𝓮𝓼 𝓸𝓷 𝓼𝓾𝓻𝓿𝓮𝔂 𝓹𝓪𝓻𝓽𝓲𝓬𝓲𝓹𝓪𝓽𝓲𝓸𝓷 𝓪𝓷𝓭 𝓻𝓮𝔀𝓪𝓻𝓭𝓼. 𝓣𝓱𝓮𝓻𝓮𝓯𝓸𝓻𝓮, 𝓿𝓮𝓻𝓲𝓯𝔂 𝓪𝓷𝔂 𝓪𝓭𝓿𝓮𝓻𝓽𝓲𝓼𝓮𝓭 𝓭𝓮𝓪𝓵 𝓫𝓮𝓯𝓸𝓻𝓮 𝓽𝓻𝓮𝓪𝓽𝓲𝓷𝓰 𝓪 𝓹𝓮𝓻𝓬𝓮𝓷𝓽𝓪𝓰𝓮 𝓪𝓼 𝓪𝓬𝓽𝓾𝓪𝓵 𝓼𝓪𝓿𝓲𝓷𝓰𝓼.</p>

<p>╔══════════════════════════════════════╗<br />
𝓗𝓸𝔀 𝓽𝓸 𝓤𝓼𝓮 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓡𝓮𝓯𝓮𝓻𝓻𝓪𝓵 𝓒𝓸𝓭𝓮<br />
╚══════════════════════════════════════╝</p>

<p>𝓕𝓲𝓻𝓼𝓽, 𝓯𝓲𝓷𝓭 𝓽𝓱𝓮 𝓸𝓯𝓯𝓲𝓬𝓲𝓪𝓵 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓪𝓹𝓹 𝓲𝓷 𝔂𝓸𝓾𝓻 𝓭𝓮𝓿𝓲𝓬𝓮'𝓼 𝓪𝓹𝓹 𝓼𝓽𝓸𝓻𝓮. 𝓘𝓷𝓼𝓽𝓪𝓵𝓵 𝓲𝓽 𝓪𝓷𝓭 𝓯𝓸𝓵𝓵𝓸𝔀 𝓽𝓱𝓮 𝓼𝓲𝓰𝓷𝓾𝓹 𝓲𝓷𝓼𝓽𝓻𝓾𝓬𝓽𝓲𝓸𝓷𝓼.</p>

<p>𝓢𝓽𝓮𝓹 1: 𝓒𝓻𝓮𝓪𝓽𝓮 𝔂𝓸𝓾𝓻 𝓪𝓬𝓬𝓸𝓾𝓷𝓽 𝓾𝓼𝓲𝓷𝓰 𝓪𝓬𝓬𝓾𝓻𝓪𝓽𝓮 𝓲𝓷𝓯𝓸𝓻𝓶𝓪𝓽𝓲𝓸𝓷.</p>

<p>𝓢𝓽𝓮𝓹 2: 𝓛𝓸𝓸𝓴 𝓯𝓸𝓻 𝓽𝓱𝓮 𝓻𝓮𝓯𝓮𝓻𝓻𝓪𝓵 𝓸𝓹𝓽𝓲𝓸𝓷 𝓲𝓯 𝓲𝓽 𝓲𝓼 𝓪𝓿𝓪𝓲𝓵𝓪𝓫𝓵𝓮.</p>

<p>𝓢𝓽𝓮𝓹 3: 𝓒𝓱𝓮𝓬𝓴 𝔀𝓱𝓮𝓽𝓱𝓮𝓻 𝓞𝓩𝓡𝓓𝓥 𝓸𝓻 𝓤𝓨𝓩𝓞𝓕 𝓬𝓪𝓷 𝓫𝓮 𝓾𝓼𝓮𝓭 𝓯𝓸𝓻 𝔂𝓸𝓾𝓻 𝓪𝓬𝓬𝓸𝓾𝓷𝓽.</p>

<p>𝓢𝓽𝓮𝓹 4: 𝓡𝓮𝓪𝓭 𝓪𝓷𝔂 𝓮𝓵𝓲𝓰𝓲𝓫𝓲𝓵𝓲𝓽𝔂 𝓻𝓾𝓵𝓮𝓼 𝓪𝓷𝓭 𝓻𝓮𝔀𝓪𝓻𝓭 𝓬𝓸𝓷𝓭𝓲𝓽𝓲𝓸𝓷𝓼.</p>

<p>𝓢𝓽𝓮𝓹 5: 𝓔𝔁𝓹𝓵𝓸𝓻𝓮 𝓽𝓱𝓮 𝓼𝓾𝓻𝓿𝓮𝔂𝓼 𝓽𝓱𝓪𝓽 𝓪𝓻𝓮 𝓪𝓿𝓪𝓲𝓵𝓪𝓫𝓵𝓮 𝓯𝓸𝓻 𝔂𝓸𝓾.</p>

<p>╔══════════════════════════════════════╗<br />
𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓢𝓲𝓰𝓷𝓾𝓹 𝓑𝓸𝓷𝓾𝓼 𝓪𝓷𝓭 𝓡𝓮𝓯𝓮𝓻𝓻𝓪𝓵 𝓡𝓮𝔀𝓪𝓻𝓭𝓼<br />
╚══════════════════════════════════════╝</p>

<p>𝓝𝓮𝔀 𝓾𝓼𝓮𝓻𝓼 𝓸𝓯𝓽𝓮𝓷 𝓼𝓮𝓪𝓻𝓬𝓱 𝓯𝓸𝓻 𝓪𝓷 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓼𝓲𝓰𝓷𝓾𝓹 𝓫𝓸𝓷𝓾𝓼 𝓽𝓸 𝓵𝓮𝓪𝓻𝓷 𝔀𝓱𝓪𝓽 𝓪𝓭𝓭𝓲𝓽𝓲𝓸𝓷𝓪𝓵 𝓫𝓮𝓷𝓮𝓯𝓲𝓽𝓼 𝓶𝓪𝔂 𝓫𝓮 𝓪𝓿𝓪𝓲𝓵𝓪𝓫𝓵𝓮. 𝓡𝓮𝔀𝓪𝓻𝓭𝓼 𝓬𝓪𝓷 𝓭𝓮𝓹𝓮𝓷𝓭 𝓸𝓷 𝓽𝓱𝓮 𝓬𝓾𝓻𝓻𝓮𝓷𝓽 𝓻𝓮𝓯𝓮𝓻𝓻𝓪𝓵 𝓹𝓻𝓸𝓰𝓻𝓪𝓶, 𝓬𝓸𝓾𝓷𝓽𝓻𝔂, 𝓪𝓷𝓭 𝓪𝓬𝓬𝓸𝓾𝓷𝓽 𝓼𝓽𝓪𝓽𝓾𝓼.</p>

<p>𝓐 𝓰𝓾𝓪𝓻𝓪𝓷𝓽𝓮𝓮𝓭 $30 𝓼𝓲𝓰𝓷𝓾𝓹 𝓫𝓸𝓷𝓾𝓼 𝓱𝓪𝓼 𝓷𝓸𝓽 𝓫𝓮𝓮𝓷 𝓿𝓮𝓻𝓲𝓯𝓲𝓮𝓭 𝓯𝓸𝓻 𝓽𝓱𝓮𝓼𝓮 𝓬𝓸𝓭𝓮𝓼. 𝓒𝓱𝓮𝓬𝓴 𝓽𝓱𝓮 𝓸𝓯𝓯𝓲𝓬𝓲𝓪𝓵 𝓪𝓹𝓹 𝓯𝓸𝓻 𝓬𝓾𝓻𝓻𝓮𝓷𝓽 𝓽𝓮𝓻𝓶𝓼 𝓫𝓮𝓯𝓸𝓻𝓮 𝓮𝔁𝓹𝓮𝓬𝓽𝓲𝓷𝓰 𝓪 𝓹𝓪𝔂𝓸𝓾𝓽 𝓸𝓻 𝓫𝓸𝓷𝓾𝓼.</p>

<p>╔══════════════════════════════════════╗<br />
𝓔𝔁𝓹𝓵𝓸𝓻𝓲𝓷𝓰 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓟𝓪𝓲𝓭 𝓢𝓾𝓻𝓿𝓮𝔂𝓼<br />
╚══════════════════════════════════════╝</p>

<p>𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓹𝓪𝓲𝓭 𝓼𝓾𝓻𝓿𝓮𝔂𝓼 𝓬𝓪𝓷 𝓬𝓸𝓿𝓮𝓻 𝓽𝓸𝓹𝓲𝓬𝓼 𝓼𝓾𝓬𝓱 𝓪𝓼 𝓬𝓸𝓷𝓼𝓾𝓶𝓮𝓻 𝓹𝓻𝓮𝓯𝓮𝓻𝓮𝓷𝓬𝓮𝓼, 𝓽𝓮𝓬𝓱𝓷𝓸𝓵𝓸𝓰𝔂, 𝓼𝓱𝓸𝓹𝓹𝓲𝓷𝓰 𝓱𝓪𝓫𝓲𝓽𝓼, 𝓪𝓷𝓭 𝓮𝓿𝓮𝓻𝔂𝓭𝓪𝔂 𝓮𝔁𝓹𝓮𝓻𝓲𝓮𝓷𝓬𝓮𝓼. 𝓔𝓪𝓬𝓱 𝓼𝓾𝓻𝓿𝓮𝔂 𝓶𝓪𝔂 𝓱𝓪𝓿𝓮 𝓲𝓽𝓼 𝓸𝔀𝓷 𝓺𝓾𝓪𝓵𝓲𝓯𝓲𝓬𝓪𝓽𝓲𝓸𝓷 𝓻𝓾𝓵𝓮𝓼, 𝓽𝓲𝓶𝓮 𝓻𝓮𝓺𝓾𝓲𝓻𝓮𝓶𝓮𝓷𝓽𝓼, 𝓪𝓷𝓭 𝓹𝓸𝓽𝓮𝓷𝓽𝓲𝓪𝓵 𝓻𝓮𝔀𝓪𝓻𝓭𝓼.</p>

<p>𝓒𝓸𝓶𝓹𝓵𝓮𝓽𝓮 𝔂𝓸𝓾𝓻 𝓹𝓻𝓸𝓯𝓲𝓵𝓮 𝓪𝓬𝓬𝓾𝓻𝓪𝓽𝓮𝓵𝔂, 𝓻𝓮𝓿𝓲𝓮𝔀 𝓼𝓾𝓻𝓿𝓮𝔂 𝓻𝓮𝓺𝓾𝓲𝓻𝓮𝓶𝓮𝓷𝓽𝓼, 𝓪𝓷𝓭 𝓪𝓷𝓼𝔀𝓮𝓻 𝓱𝓸𝓷𝓮𝓼𝓽𝓵𝔂. 𝓝𝓸𝓽 𝓮𝓿𝓮𝓻𝔂 𝓼𝓾𝓻𝓿𝓮𝔂 𝔀𝓲𝓵𝓵 𝓫𝓮 𝓪𝓿𝓪𝓲𝓵𝓪𝓫𝓵𝓮 𝓽𝓸 𝓮𝓿𝓮𝓻𝔂 𝓹𝓮𝓻𝓼𝓸𝓷, 𝓪𝓷𝓭 𝓹𝓸𝓽𝓮𝓷𝓽𝓲𝓪𝓵 𝓮𝓪𝓻𝓷𝓲𝓷𝓰𝓼 𝓪𝓻𝓮 𝓷𝓸𝓽 𝓰𝓾𝓪𝓻𝓪𝓷𝓽𝓮𝓮𝓭.</p>

<p>╔══════════════════════════════════════╗<br />
𝓦𝓱𝔂 𝓘𝓼 𝓜𝔂 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓟𝓻𝓸𝓶𝓸 𝓒𝓸𝓭𝓮 𝓝𝓸𝓽 𝓦𝓸𝓻𝓴𝓲𝓷𝓰?<br />
╚══════════════════════════════════════╝</p>

<p>𝓘𝓯 𝓪 𝓬𝓸𝓭𝓮 𝓲𝓼 𝓷𝓸𝓽 𝓪𝓬𝓬𝓮𝓹𝓽𝓮𝓭, 𝓬𝓱𝓮𝓬𝓴 𝓽𝓱𝓪𝓽 𝓲𝓽 𝓱𝓪𝓼 𝓫𝓮𝓮𝓷 𝓮𝓷𝓽𝓮𝓻𝓮𝓭 𝓬𝓸𝓻𝓻𝓮𝓬𝓽𝓵𝔂. 𝓡𝓮𝓿𝓲𝓮𝔀 𝓽𝓱𝓮 𝓪𝓹𝓹'𝓼 𝓲𝓷𝓼𝓽𝓻𝓾𝓬𝓽𝓲𝓸𝓷𝓼 𝓪𝓷𝓭 𝓬𝓱𝓮𝓬𝓴 𝓯𝓸𝓻 𝓪𝓷𝔂 𝓻𝓮𝓰𝓲𝓸𝓷𝓪𝓵, 𝓪𝓬𝓬𝓸𝓾𝓷𝓽, 𝓸𝓻 𝓽𝓲𝓶𝓮-𝓵𝓲𝓶𝓲𝓽𝓮𝓭 𝓻𝓮𝓼𝓽𝓻𝓲𝓬𝓽𝓲𝓸𝓷𝓼.</p>

<p>𝓘𝓯 𝓽𝓱𝓮 𝓬𝓸𝓭𝓮 𝓼𝓽𝓲𝓵𝓵 𝓭𝓸𝓮𝓼 𝓷𝓸𝓽 𝔀𝓸𝓻𝓴, 𝓬𝓸𝓷𝓽𝓪𝓬𝓽 𝓸𝓯𝓯𝓲𝓬𝓲𝓪𝓵 𝓼𝓾𝓹𝓹𝓸𝓻𝓽. 𝓐𝓿𝓸𝓲𝓭 𝓭𝓾𝓹𝓵𝓲𝓬𝓪𝓽𝓮 𝓪𝓬𝓬𝓸𝓾𝓷𝓽𝓼 𝓸𝓻 𝓾𝓷𝓸𝓯𝓯𝓲𝓬𝓲𝓪𝓵 𝓼𝓮𝓻𝓿𝓲𝓬𝓮𝓼 𝓽𝓱𝓪𝓽 𝓹𝓻𝓸𝓶𝓲𝓼𝓮 𝓬𝓮𝓻𝓽𝓪𝓲𝓷 𝓮𝓪𝓻𝓷𝓲𝓷𝓰𝓼.</p>

<p>╔══════════════════════════════════════╗<br />
𝓕𝓻𝓮𝓺𝓾𝓮𝓷𝓽𝓵𝔂 𝓐𝓼𝓴𝓮𝓭 𝓠𝓾𝓮𝓼𝓽𝓲𝓸𝓷𝓼<br />
╚══════════════════════════════════════╝</p>

<p>𝓦𝓱𝓪𝓽 𝓘𝓼 𝓽𝓱𝓮 𝓛𝓪𝓽𝓮𝓼𝓽 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓡𝓮𝓯𝓮𝓻𝓻𝓪𝓵 𝓒𝓸𝓭𝓮 𝓯𝓸𝓻 2026?</p>

<p>𝓣𝓱𝓮 𝓬𝓸𝓭𝓮𝓼 𝓯𝓮𝓪𝓽𝓾𝓻𝓮𝓭 𝓲𝓷 𝓽𝓱𝓲𝓼 𝓰𝓾𝓲𝓭𝓮 𝓪𝓻𝓮 𝓞𝓩𝓡𝓓𝓥 𝓪𝓷𝓭 𝓤𝓨𝓩𝓞𝓕. 𝓒𝓱𝓮𝓬𝓴 𝓽𝓱𝓮 𝓬𝓾𝓻𝓻𝓮𝓷𝓽 𝓽𝓮𝓻𝓶𝓼 𝓽𝓸 𝓼𝓮𝓮 𝔀𝓱𝓮𝓽𝓱𝓮𝓻 𝓮𝓲𝓽𝓱𝓮𝓻 𝓬𝓸𝓭𝓮 𝓲𝓼 𝓮𝓵𝓲𝓰𝓲𝓫𝓵𝓮.</p>

<p>𝓓𝓸𝓮𝓼 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓞𝓯𝓯𝓮𝓻 10% 𝓽𝓸 50% 𝓞𝓯𝓯?</p>

<p>𝓣𝓱𝓮𝓼𝓮 𝓹𝓮𝓻𝓬𝓮𝓷𝓽𝓪𝓰𝓮𝓼 𝓪𝓻𝓮 𝓲𝓷𝓬𝓵𝓾𝓭𝓮𝓭 𝓪𝓼 𝓹𝓸𝓹𝓾𝓵𝓪𝓻 𝓼𝓮𝓪𝓻𝓬𝓱 𝓽𝓮𝓻𝓶𝓼, 𝓷𝓸𝓽 𝓿𝓮𝓻𝓲𝓯𝓲𝓮𝓭 𝓸𝓯𝓯𝓲𝓬𝓲𝓪𝓵 𝓸𝓯𝓯𝓮𝓻𝓼.</p>

<p>𝓒𝓪𝓷 𝓝𝓮𝔀 𝓤𝓼𝓮𝓻𝓼 𝓡𝓮𝓬𝓮𝓲𝓿𝓮 𝓪 𝓢𝓲𝓰𝓷𝓾𝓹 𝓑𝓸𝓷𝓾𝓼?</p>

<p>𝓐𝓷𝔂 𝓫𝓸𝓷𝓾𝓼 𝓭𝓮𝓹𝓮𝓷𝓭𝓼 𝓸𝓷 𝓽𝓱𝓮 𝓪𝓬𝓽𝓲𝓿𝓮 𝓻𝓮𝓯𝓮𝓻𝓻𝓪𝓵 𝓹𝓻𝓸𝓰𝓻𝓪𝓶 𝓪𝓷𝓭 𝓽𝓱𝓮 𝓾𝓼𝓮𝓻'𝓼 𝓮𝓵𝓲𝓰𝓲𝓫𝓲𝓵𝓲𝓽𝔂.</p>

<p>𝓒𝓪𝓷 𝓨𝓸𝓾 𝓔𝓪𝓻𝓷 𝓜𝓸𝓷𝓮𝔂 𝓦𝓲𝓽𝓱 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵?</p>

<p>𝓔𝓵𝓲𝓰𝓲𝓫𝓵𝓮 𝓾𝓼𝓮𝓻𝓼 𝓶𝓪𝔂 𝓮𝓪𝓻𝓷 𝓻𝓮𝔀𝓪𝓻𝓭𝓼 𝓯𝓻𝓸𝓶 𝓺𝓾𝓪𝓵𝓲𝓯𝔂𝓲𝓷𝓰 𝓼𝓾𝓻𝓿𝓮𝔂𝓼, 𝓫𝓾𝓽 𝓪𝓿𝓪𝓲𝓵𝓪𝓫𝓲𝓵𝓲𝓽𝔂 𝓪𝓷𝓭 𝓮𝓪𝓻𝓷𝓲𝓷𝓰𝓼 𝓿𝓪𝓻𝔂.</p>

<p>𝓘𝓼 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓐𝓿𝓪𝓲𝓵𝓪𝓫𝓵𝓮 𝓘𝓷 𝓔𝓿𝓮𝓻𝔂 𝓒𝓸𝓾𝓷𝓽𝓻𝔂?</p>

<p>𝓐𝓹𝓹 𝓪𝓬𝓬𝓮𝓼𝓼, 𝓼𝓾𝓻𝓿𝓮𝔂 𝓼𝓮𝓵𝓮𝓬𝓽𝓲𝓸𝓷, 𝓹𝓪𝔂𝓶𝓮𝓷𝓽 𝓶𝓮𝓽𝓱𝓸𝓭𝓼, 𝓪𝓷𝓭 𝓻𝓮𝓯𝓮𝓻𝓻𝓪𝓵 𝓸𝓯𝓯𝓮𝓻𝓼 𝓶𝓪𝔂 𝓭𝓲𝓯𝓯𝓮𝓻 𝓫𝔂 𝓻𝓮𝓰𝓲𝓸𝓷.</p>

<p>╔══════════════════════════════════════╗<br />
𝓕𝓲𝓷𝓪𝓵 𝓣𝓱𝓸𝓾𝓰𝓱𝓽𝓼 – 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓒𝓸𝓾𝓹𝓸𝓷 𝓒𝓸𝓭𝓮 2026<br />
╚══════════════════════════════════════╝</p>

<p>𝓘𝓯 𝔂𝓸𝓾 𝓪𝓻𝓮 𝓼𝓮𝓪𝓻𝓬𝓱𝓲𝓷𝓰 𝓯𝓸𝓻 𝓪𝓷 𝓐𝓽𝓽𝓪𝓟𝓸𝓵𝓵 𝓬𝓸𝓾𝓹𝓸𝓷 𝓬𝓸𝓭𝓮, 𝓻𝓮𝓯𝓮𝓻𝓻𝓪𝓵 𝓬𝓸𝓭𝓮, 𝓹𝓻𝓸𝓶𝓸 𝓬𝓸𝓭𝓮, 𝓸𝓻 𝓼𝓲𝓰𝓷𝓾𝓹 𝓻𝓮𝔀𝓪𝓻𝓭𝓼 𝓲𝓷 2026, 𝓬𝓱𝓮𝓬𝓴 𝓞𝓩𝓡𝓓𝓥 𝓪𝓷𝓭 𝓤𝓨𝓩𝓞𝓕 𝓪𝓰𝓪𝓲𝓷𝓼𝓽 𝓽𝓱𝓮 𝓬𝓾𝓻𝓻𝓮𝓷𝓽 𝓸𝓯𝓯𝓲𝓬𝓲𝓪𝓵 𝓽𝓮𝓻𝓶𝓼. 𝓡𝓮𝓿𝓲𝓮𝔀 𝓽𝓱𝓮 𝓼𝓾𝓻𝓿𝓮𝔂 𝓻𝓾𝓵𝓮𝓼, 𝓬𝓸𝓷𝓯𝓲𝓻𝓶 𝓪𝓷𝔂 𝓮𝓵𝓲𝓰𝓲𝓫𝓵𝓮 𝓻𝓮𝔀𝓪𝓻𝓭𝓼, 𝓪𝓷𝓭 𝓾𝓼𝓮 𝓽𝓱𝓮 𝓪𝓹𝓹 𝓻𝓮𝓼𝓹𝓸𝓷𝓼𝓲𝓫𝓵𝔂. 𝓐𝓵𝔀𝓪𝔂𝓼 𝓿𝓮𝓻𝓲𝓯𝔂 𝓸𝓯𝓯𝓮𝓻 𝓭𝓮𝓽𝓪𝓲𝓵𝓼 𝓫𝓮𝓯𝓸𝓻𝓮 𝓮𝔁𝓹𝓮𝓬𝓽𝓲𝓷𝓰 𝓪 𝓼𝓹𝓮𝓬𝓲𝓯𝓲𝓬 𝓫𝓸𝓷𝓾𝓼 𝓸𝓻 𝓭𝓲𝓼𝓬𝓸𝓾𝓷𝓽.</p>
]]>
        </description>
    </item>
    <item>
        <title>Datasheets of parts in Elecrow Parts Library</title>
        <link>https://forum.elecrow.com/index.php?p=/discussion/619/datasheets-of-parts-in-elecrow-parts-library</link>
        <pubDate>Wed, 10 Jan 2024 01:52:01 +0000</pubDate>
        <category>Manufacturing  Question</category>
        <dc:creator>hymd</dc:creator>
        <guid isPermaLink="false">619@/index.php?p=/discussions</guid>
        <description><![CDATA[<p>I am looking at the Elecrow Parts Library list for parts selection for PCBA, but some datasheets are out of links.</p><p>Where can I get the datasheets for the following four parts?</p><ol><li>Power Supply 5011533A&nbsp;LD1117-3v3</li><li>MOSFET&nbsp;4022023A&nbsp;&nbsp;CJ2305</li><li>MOSFET&nbsp;4030523A&nbsp;&nbsp;Si2305</li><li>Diode&nbsp;4011554B&nbsp;SS54B</li></ol><p><br /></p>]]>
        </description>
    </item>
    <item>
        <title>Raspberry Pi_Zero 1.54&quot; Display Hat - Can Elecrow Build Them?</title>
        <link>https://forum.elecrow.com/index.php?p=/discussion/27880/raspberry-pi-zero-1-54-display-hat-can-elecrow-build-them</link>
        <pubDate>Wed, 05 Nov 2025 11:18:58 +0000</pubDate>
        <category>Manufacturing  Question</category>
        <dc:creator>TEC_1G</dc:creator>
        <guid isPermaLink="false">27880@/index.php?p=/discussions</guid>
        <description><![CDATA[<p>I am looking to design a new Display Hat using a 1.54" LCD using a ST7789 driver. I would be similar in design to this 3D mockup: (your website is not allowing me to add an image)<br />
Can Elecrow source the LCD screen?<br />
I have purchased and tested the screen from a supplier on AliExpress, and it worked perfectly.<br />
(Again, this website is not allowing me to include a link)<br />
This doesn't bode well.</p>
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        </description>
    </item>
    <item>
        <title>Coverlay for FPC boards</title>
        <link>https://forum.elecrow.com/index.php?p=/discussion/23321/coverlay-for-fpc-boards</link>
        <pubDate>Mon, 30 Jun 2025 00:15:12 +0000</pubDate>
        <category>Manufacturing  Question</category>
        <dc:creator>tabata</dc:creator>
        <guid isPermaLink="false">23321@/index.php?p=/discussions</guid>
        <description><![CDATA[<p>Is it possible to create an FPC board with coverlay?<br />
If so, where on your website can I request a quote?</p>
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        </description>
    </item>
    <item>
        <title>Radius of outline inner corner</title>
        <link>https://forum.elecrow.com/index.php?p=/discussion/811/radius-of-outline-inner-corner</link>
        <pubDate>Thu, 18 Jul 2024 10:29:55 +0000</pubDate>
        <category>Manufacturing  Question</category>
        <dc:creator>YAMANEKO</dc:creator>
        <guid isPermaLink="false">811@/index.php?p=/discussions</guid>
        <description><![CDATA[<p>I am having trouble with a USB connector like this one.<br />
<img src="https://forum.elecrow.com/uploads/editor/lr/lc9ejjb8ajyz.png" alt="" title="" /><br />
According to the specs of your regular PCB, the minimum diameter of the outline router cut  is 2mm, but the parts circled in red requires more small radius.<br />
How should I draw such a part?<br />
Right now, I am thinking of placing an elliptical NPTHs at the corner to ensure the corners, as in the second image. Is this okay?<br />
<img src="https://forum.elecrow.com/uploads/editor/ut/syaihql0pgxv.png" alt="" title="" /></p>
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        </description>
    </item>
    <item>
        <title>Where can I find resources for an old kit?</title>
        <link>https://forum.elecrow.com/index.php?p=/discussion/758/where-can-i-find-resources-for-an-old-kit</link>
        <pubDate>Sat, 15 Jun 2024 19:33:51 +0000</pubDate>
        <category>Manufacturing  Question</category>
        <dc:creator>Rebronald</dc:creator>
        <guid isPermaLink="false">758@/index.php?p=/discussions</guid>
        <description><![CDATA[<p>I'm after lesson plans for a kit I bought about 5 urs ago, called 'Starter kit for Raspberry Pi and Arduino'.<br />
Are threr available online somewhere?</p>
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        </description>
    </item>
    <item>
        <title>Manufacturing files for acrylic laser cutting orders.</title>
        <link>https://forum.elecrow.com/index.php?p=/discussion/627/manufacturing-files-for-acrylic-laser-cutting-orders</link>
        <pubDate>Wed, 17 Jan 2024 06:39:52 +0000</pubDate>
        <category>Manufacturing  Question</category>
        <dc:creator>letscode</dc:creator>
        <guid isPermaLink="false">627@/index.php?p=/discussions</guid>
        <description><![CDATA[<p>Yesterday I placed an order for acrylic.</p><p><br /></p><p>Order #####</p><p>Project NO: ######</p><p>Sku: ######</p><p><br /></p><p>As this was my first order, I didn&#39;t know what design files to prepare, so I zipped up a few different files and sent them to you.</p><p>It includes .svg, .step, and .pdf.</p><p>I created them in KiCAD, a CAD for PCBs.</p><p>I do not have the Illustrator and cannot make .ai files.</p><p><br /></p><p>As of now, its production seems to be in progress.</p><p>So I understand that the files I have prepared have been accepted.</p><p>In fact, in which format should I have prepared the file?</p><p>Please let me know for future reference.</p>]]>
        </description>
    </item>
    <item>
        <title>PCB Assembly Production Process Questions</title>
        <link>https://forum.elecrow.com/index.php?p=/discussion/46/pcb-assembly-production-process-questions</link>
        <pubDate>Sat, 06 Mar 2021 02:22:22 +0000</pubDate>
        <category>Manufacturing  Question</category>
        <dc:creator>allen</dc:creator>
        <guid isPermaLink="false">46@/index.php?p=/discussions</guid>
        <description><![CDATA[<p><strong>Understand these SMT process defects and get twice the result with half the effort in the design phase</strong></p><p>Many engineers in the R &amp; D verification stage, in order to save time, will look for the SMT factory to make the sample, but due to the different level of factory technology, some engineers have found a short circuit or open circuit&nbsp;after got the sample, Unable to test normally&nbsp;and can&#39;t find the problem at the moment, It&#39;s not sure whether it&#39;s a factory problem or a design issue, Therefore, we collected several common process defects in SMT&nbsp;processing to help you understand SMT chip processing and avoid detours.</p><p><br /></p><p><strong>Defect 1:&nbsp;the phenomenon of &quot;erecting stele&quot; (i.e. chip components &quot;erecting&quot;) [defect explanation] it is usually due to the unbalanced wetting force at both ends of the component during reflow soldering, resulting in unbalanced torque at both ends of the component, resulting in &quot;erecting stele&quot;.</strong></p><p><br /></p><p>Factor A: unreasonable pad design and layout.</p><p>① One of the pads on both sides of the element is connected with the ground wire, or the area of one side pad is too large, and the heat capacity at both ends of the pad is not uniform;</p><p>② The temperature difference on the PCB surface is too large, which leads to uneven heat absorption on both sides of the component pad;</p><p>③ There will be uneven temperature at both ends of pad of small chip components around large devices QFP, BGA and radiator.</p><p><em>Solution: engineers adjust pad design and layout.</em></p><p><br /></p><p>Factor B: solder paste and solder paste printing problems.</p><p>① If the Activity of solder paste is not high or the solder&nbsp;ability of components is poor, the surface tension will be different after the solder paste melts, which will cause the imbalance of pad wetting force.</p><p>② The solder paste printing quantity of the two pads is uneven. One side of the solder paste is thick and the tension is large, while the other side is thin and the tension is small. As a result, one end of the component is pulled to one side to form an empty solder joint, and the other end is pulled up to form a monument.</p><p><em>Solution: the factory needs to select solder paste with high Activity to improve the printing parameters of solder paste, especially the window size of steel mesh.</em></p><p><br /></p><p>Factor C: uneven stress in z-axis direction of chip displacement. This situation will lead to uneven immersion depth of components in solder paste, and unbalanced wetting force on both sides due to time difference during melting. If the chip displacement of components will directly lead to stele erection.</p><p><em>Solution: the factory needs to adjust the process parameters of the placement machine.</em></p><p><br /></p><p>Factor D: the furnace temperature curve is not correct. if the reflow soldering furnace body is too short and the temperature zone is too small, it will cause the working curve of PCB heating is not correct, so that the moisture difference on the board surface is too large, resulting in the imbalance of wetting force.</p><p><em>Solution: the factory needs to adjust the appropriate temperature curve according to each different product.</em></p><p><br /></p><p><strong>Defect 2: &quot;tin bead&quot; phenomenon</strong></p><p>Factor A: the temperature curve is not correct. The reflow curve can be divided into four sections: preheating, heat preservation, reflow and cooling. The purpose of preheating and heat preservation is to make the surface temperature of PCB rise to 150 ℃ within 60-90 s and heat preservation for about 90 s. This can not only reduce the thermal impact of PCB and components, but also ensure that the solvent of solder paste can be partially volatilized, so as to avoid splashing caused by too much solvent during reflow soldering, which will cause solder paste to rush out of the pad and form solder beads.</p><p><em>Solution: the factory should pay attention to the heating rate and take appropriate preheating to make the solvent volatilize fully.</em></p><p><br /></p><p>① The metal content in solder paste is usually (90 &plusmn; 0.5)%, too low metal content will lead to too much flux composition, so too much flux will cause flying bead because it is not easy to volatilize in preheating stage;</p><p>② The increase of water vapor and oxygen content in solder paste can also cause flying bead. Because solder paste is usually refrigerated, if it is not thawed and stirred evenly when it is taken out from the refrigerator, it will cause water vapor to enter; in addition, the lid of solder paste bottle should be tightly closed after each use, if it is not closed in time, it will also cause water vapor to enter;</p><p>&nbsp;③ After the solder paste printed on the steel screen is completed, the remaining part should be treated separately. If it is put back into the original bottle, the solder paste in the bottle will deteriorate and tin beads will be produced;</p><p><em>Solution: the factory is required to select high-quality solder paste and pay attention to the storage and use requirements of solder paste.</em></p><p><br /></p><p>There are other factors:</p><p>① The printing is too thick, and the excess solder paste overflows after the component is pressed down;</p><p>② The mounting pressure is too high, the solder paste collapses to the ink;</p><p>③ The shape of the pad opening is not good, and the solder bead prevention treatment is not done;</p><p>④ Solder paste Activity is not good, dry too fast, or there are too many small particles of tin powder;</p><p>⑤ Printing offset, so that part of the solder paste stick to the PCB; 6. Too fast scraper speed, resulting in poor edge collapse, lead to solder ball after reflow.</p><p><br /></p><p><strong>3. Defect 3: &quot;bridging&quot; phenomenon</strong></p><p>Factor A: quality problem of solder paste</p><p>① The metal content in solder paste is high, especially if the printing time is too long, it is easy to increase the metal content, leading to IC pin bridging;</p><p>② The viscosity of solder paste is low, and it flows out of the pad after preheating;</p><p>③ The drop of solder paste tower is poor, and it flows out of the pad after preheating;</p><p><em>Solution: the factory needs to adjust the proportion of solder paste or use a good quality solder paste.</em></p><p><br /></p><p>Factor B: printing system</p><p>① The printing press has poor repetition accuracy and uneven alignment (inaccurate alignment of steel mesh and PCB), which leads to solder paste printing outside the pad, especially the fine pitch QFP pad;</p><p>② The inaccuracy of the size and thickness of steel mesh window and the uneven Sn Pb alloy coating of PCB pad lead to more solder paste;</p><p><em>Solution: the printing press needs to be adjusted in the factory to improve the coating layer of PCB pad;</em></p><p><br /></p><p>Factor C: too much sticking pressure and full flow of solder paste after being pressed are the common reasons in production. In addition, insufficient accuracy of the chip will cause the components to shift and IC pins to deform;</p><p>Factor D: reflow furnace temperature rising speed is too fast, solvent in solder paste is too late to volatilize</p><p><em>Solution: the factory needs to adjust the z-axis height of the placement machine and the heating speed of the reflow soldering furnace</em></p><p><br /></p><p><strong>Defect 4: &quot;wicking&quot; phenomenon, also known as material suction phenomenon and core pulling phenomenon, is more common in gas phase reflow soldering. The solder separated from the pad and went up between the pin and the chip body, which led to serious false soldering. Generally, due to the high thermal conductivity and rapid temperature rise of the pins, the solder preferentially moistens the pins, and the wetting force between the solder and the pins is much greater than that between the solder and the pad, and the upwarping of the pins will aggravate the phenomenon of wicking.</strong></p><p><em>Solution: the factory needs to preheat the SMA (surface mount assembly) fully before welding in the furnace. It should carefully test and ensure the solderability of PCB pad. The coplanarity of components can not be ignored. The components with poor coplanarity should not be used in production. Note: in the infrared reflow soldering, the organic flux in PCB substrate and solder is a good absorbing medium for infrared rays, while the pin can partially reflect infrared rays. Therefore, the wetting force between solder and pad will be greater than that between solder and pin, so the solder will not rise along the pin, so the probability of wicking phenomenon is much smaller.</em></p><p><br /></p><p><strong>Defect 5: bad BGA welding</strong></p><p>Adverse symptom a: Tin connection: tin connection is also known as short circuit, that is, the solder ball is short circuited with the solder ball in the welding process, resulting in the connection of two pads, resulting in short circuit.</p><p><em>Solution: the factory adjusts the temperature curve, reduces the return air pressure and improves the printing quality.</em></p><p><br /></p><p>Bad symptom B: false soldering:&nbsp;false soldering is also known as &quot;head in pillow (hip)&quot;. There are many reasons for false soldering (oxidation of solder ball or pad, insufficient temperature in furnace, PCB deformation, poor solder paste Activity, etc.). The characteristics of BGA false welding are &quot;difficult to find&quot; and &quot;difficult to identify&quot;.</p><p>Adverse symptom C: cold welding: cold welding is not completely equal to false welding. Cold welding is caused by abnormal reflow temperature, which leads to incomplete melting of solder paste. It may be caused by temperature not reaching the melting point of solder paste or insufficient reflow time in reflow zone.</p><p><em>Solution: the factory adjusts the temperature curve to reduce vibration during cooling</em></p><p><br /></p><p>Bad symptom D: air bubble (or air hole) is not an absolute bad phenomenon, but if the air bubble is too large, it is easy to cause quality problems, and the acceptance of air bubble has IPC standard. Bubbles are mainly caused by the air hidden in the blind hole is not discharged in time during the welding process.</p><p><em>Solution: the factory is required to use X-ray to check whether there are pores in the raw materials, adjust the temperature curve, and understand these SMT process defects,</em></p><p><br /></p><p>Adverse symptoms e: solder ball cracking</p><p>Bad symptom F: dirty. the pad is dirty or has residual foreign matter, which may lead to foreign matter on the pad or bad welding due to poor environmental protection in the production process. In addition to the above points, there are: ① crystal fracture (the surface of solder joint is in glass crack state); ② offset (BGA Solder Joint and PCB pad dislocation); ③ tin splashing (there are tiny solder balls close to or between the two solder joints on the surface of PCB)</p>]]>
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