<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="9.6.2">
<drawing>
<library>
<description>&lt;BR&gt;Wurth Elektronik - Passive Components - Power Magnetics - Transformers For DC/DC Converter - WE-FB 3751&lt;br&gt;
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      ---------------------------&lt;BR&gt;&lt;b&gt;Würth Elektronik&lt;/b&gt;&lt;/FONT&gt;
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&lt;b&gt;Würth Elektronik eiSos GmbH &amp; Co. KG&lt;/b&gt;&lt;br&gt;
EMC &amp; Inductive Solutions&lt;br&gt;

Max-Eyth-Str.1&lt;br&gt;
D-74638 Waldenburg&lt;br&gt;
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Tel: +49 (0)7942-945-0&lt;br&gt;
Fax:+49 (0)7942-945-5000&lt;br&gt;
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&lt;br&gt;&lt;HR&gt;&lt;BR&gt;
Disclaimer: While Würth Elektronik eiSos has made every reasonable effort to ensure the accuracy of the PCB layout models provided, &lt;br&gt;
Würth Elektronik eiSos does not guarantee the exemption of error on the PCB layout models, nor does Würth Elektronik eiSos guarantee that the PCB layout model is current. &lt;br&gt;
Würth Elektronik eiSos reserves the right to make any adjustments at any time without notice. &lt;br&gt;
Würth Elektronik eiSos expressly disclaims all implied warranties regarding this PCB layout model. &lt;br&gt;
 &lt;br&gt;
Please contact us for more information.&lt;br&gt;
&lt;HR&gt;
&lt;br&gt;Eagle Version 9, Library Revision 2025a, 2025-02-14&lt;br&gt;
&lt;HR&gt;
Copyright: Würth Elektronik</description>
<packages>
<package name="WE-FB3751_EE35/18/10">
<description>&lt;b&gt;WE-FB 3751 Flyback Transformer for LT3751&lt;br&gt;&lt;/b&gt;

&lt;br&gt;Size: EE35/18/10,THT,14pins
&lt;br&gt;LXHXH = 36.5X42X23mm</description>
</package>
<package name="WE-FB3751_EFD20">
<description>&lt;b&gt;WE-FB 3751 Flyback Transformer for LT3751&lt;br&gt;&lt;/b&gt;

&lt;br&gt;Size: EE35/18/10,SMT,10pins
&lt;br&gt;LXHXH = 21.97X28.7X11.43mm</description>
</package>
</packages>
<symbols>
<symbol name="WE-FB3751_EE35_1W:2W">
<pin name="P1" direction="pas"/>
<pin name="S2" direction="pas"/>
<pin name="S1" direction="pas"/>
<pin name="P2" direction="pas"/>
<pin name="S3" direction="pas"/>
</symbol>
<symbol name="WE-FB3751_EFD20_1W:1W">
<pin name="6+7" direction="pas"/>
<pin name="10" direction="pas"/>
<pin name="1" direction="pas"/>
<pin name="4+5" direction="pas"/>
</symbol>
<symbol name="WE-FB3751_EFD20_2W:1W">
<pin name="7" direction="pas"/>
<pin name="10" direction="pas"/>
<pin name="1" direction="pas"/>
<pin name="4" direction="pas"/>
<pin name="6" direction="pas"/>
<pin name="5" direction="pas"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="750310355" prefix="T">
<description>&lt;b&gt; &lt;b&gt; WE-FB 3751 Flyback Transformer for LT3751&lt;/B&gt;
&lt;br&gt;
&lt;BR&gt;

Characteristics
&lt;BR&gt;
&lt;br&gt; &lt;/B&gt;Isolation voltage: 1 kVAC
&lt;br&gt;Operating temperature: –40 ºC to +125 ºC (incl. self-heating)
&lt;br&gt;Especially designed for LT3751

&lt;br&gt;
&lt;br&gt;&lt;b&gt; Applications &lt;BR&gt;&lt;br&gt;
&lt;/B&gt; Transformer for capacitor charger or high voltage outputs&lt;BR&gt;

&lt;br&gt;&lt;br&gt;

&lt;br&gt;&lt;a href="https://www.we-online.com/components/media/o14782v209%20Family_WE-FB_3751.jpg" title="Enlarge picture"&gt;
&lt;img src="https://www.we-online.com/components/media/o14782v209%20Family_WE-FB_3751.jpg" width="320"&gt;&lt;/a&gt;&lt;p&gt;
Details see: &lt;a href="www.we-online.com/catalog/WE-FB-3751/?utm_source=eagle_model&amp;utm_medium=description_link&amp;utm_campaign=eisos_eagle"&gt;www.we-online.com/en/components/products/WE-FB-3751&lt;/a&gt;&lt;p&gt;


Updated by Ella 2025-02-14&lt;br&gt;
2025(C) Wurth Elektronik</description>
<gates>
<gate name="G$1" symbol="WE-FB3751_EE35_1W:2W"/>
</gates>
<devices>
<device name="" package="WE-FB3751_EE35/18/10">
<connects>
<connect gate="G$1" pin="P1" pad="4 5 6 7"/>
<connect gate="G$1" pin="P2" pad="8 9 10 11"/>
<connect gate="G$1" pin="S1" pad="1"/>
<connect gate="G$1" pin="S2" pad="13"/>
<connect gate="G$1" pin="S3" pad="3"/>
</connects>
<technologies>
<technology name="">
<attribute name="DATASHEET-URL" value="https://www.we-online.com/redexpert/spec/750310355?ae"/>
<attribute name="IOUT" value="2400mA"/>
<attribute name="ISAT" value="50A"/>
<attribute name="L" value="2.5uH"/>
<attribute name="LS" value="0.1uH"/>
<attribute name="N" value="1:10"/>
<attribute name="PART-NUMBER" value=" 750310355 "/>
<attribute name="SIZE" value="EE35/18/10"/>
<attribute name="VALUE" value="12 - 24Vin"/>
<attribute name="VIN" value="12 - 24 V (DC)"/>
<attribute name="VOUT" value="300V"/>
<attribute name="VT" value="1000 V(AC)"/>
</technology>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="750310349" prefix="T">
<description>&lt;b&gt; &lt;b&gt; WE-FB 3751 Flyback Transformer for LT3751&lt;/B&gt;
&lt;br&gt;
&lt;BR&gt;

Characteristics
&lt;BR&gt;
&lt;br&gt; &lt;/B&gt;Isolation voltage: 1 kVAC
&lt;br&gt;Operating temperature: –40 ºC to +125 ºC (incl. self-heating)
&lt;br&gt;Especially designed for LT3751

&lt;br&gt;
&lt;br&gt;&lt;b&gt; Applications &lt;BR&gt;&lt;br&gt;
&lt;/B&gt; Transformer for capacitor charger or high voltage outputs&lt;BR&gt;

&lt;br&gt;&lt;br&gt;

&lt;br&gt;&lt;a href="https://www.we-online.com/components/media/o14782v209%20Family_WE-FB_3751.jpg" title="Enlarge picture"&gt;
&lt;img src="https://www.we-online.com/components/media/o14782v209%20Family_WE-FB_3751.jpg" width="320"&gt;&lt;/a&gt;&lt;p&gt;
Details see: &lt;a href="www.we-online.com/catalog/WE-FB-3751/?utm_source=eagle_model&amp;utm_medium=description_link&amp;utm_campaign=eisos_eagle"&gt;www.we-online.com/en/components/products/WE-FB-3751&lt;/a&gt;&lt;p&gt;


Updated by Ella 2025-02-14&lt;br&gt;
2025(C) Wurth Elektronik</description>
<gates>
<gate name="G$1" symbol="WE-FB3751_EE35_1W:2W"/>
</gates>
<devices>
<device name="" package="WE-FB3751_EE35/18/10">
<connects>
<connect gate="G$1" pin="P1" pad="4 5 6"/>
<connect gate="G$1" pin="P2" pad="8 9 10"/>
<connect gate="G$1" pin="S1" pad="1"/>
<connect gate="G$1" pin="S2" pad="13"/>
<connect gate="G$1" pin="S3" pad="3"/>
</connects>
<technologies>
<technology name="">
<attribute name="DATASHEET-URL" value="https://www.we-online.com/redexpert/spec/750310349?ae"/>
<attribute name="IOUT" value="1800mA"/>
<attribute name="ISAT" value="25A"/>
<attribute name="L" value="5uH"/>
<attribute name="LS" value="0.1uH"/>
<attribute name="N" value="1:10"/>
<attribute name="PART-NUMBER" value=" 750310349 "/>
<attribute name="SIZE" value="EE35/18/10"/>
<attribute name="VALUE" value="12 - 24Vin"/>
<attribute name="VIN" value="12 - 24 V (DC)"/>
<attribute name="VOUT" value="300V"/>
<attribute name="VT" value="1000 V(AC)"/>
</technology>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="750032051" prefix="T">
<description>&lt;b&gt; &lt;b&gt; WE-FB 3751 Flyback Transformer for LT3751&lt;/B&gt;
&lt;br&gt;
&lt;BR&gt;

Characteristics
&lt;BR&gt;
&lt;br&gt; &lt;/B&gt;Isolation voltage: 1 kVAC
&lt;br&gt;Operating temperature: –40 ºC to +125 ºC (incl. self-heating)
&lt;br&gt;Especially designed for LT3751

&lt;br&gt;
&lt;br&gt;&lt;b&gt; Applications &lt;BR&gt;&lt;br&gt;
&lt;/B&gt; Transformer for capacitor charger or high voltage outputs&lt;BR&gt;

&lt;br&gt;&lt;br&gt;

&lt;br&gt;&lt;a href="https://www.we-online.com/components/media/o14782v209%20Family_WE-FB_3751.jpg" title="Enlarge picture"&gt;
&lt;img src="https://www.we-online.com/components/media/o14782v209%20Family_WE-FB_3751.jpg" width="320"&gt;&lt;/a&gt;&lt;p&gt;
Details see: &lt;a href="www.we-online.com/catalog/WE-FB-3751/?utm_source=eagle_model&amp;utm_medium=description_link&amp;utm_campaign=eisos_eagle"&gt;www.we-online.com/en/components/products/WE-FB-3751&lt;/a&gt;&lt;p&gt;


Updated by Ella 2025-02-14&lt;br&gt;
2025(C) Wurth Elektronik</description>
<gates>
<gate name="G$1" symbol="WE-FB3751_EFD20_2W:1W"/>
</gates>
<devices>
<device name="" package="WE-FB3751_EFD20">
<connects>
<connect gate="G$1" pin="1" pad="1"/>
<connect gate="G$1" pin="10" pad="10"/>
<connect gate="G$1" pin="4" pad="4"/>
<connect gate="G$1" pin="5" pad="5"/>
<connect gate="G$1" pin="6" pad="6"/>
<connect gate="G$1" pin="7" pad="7"/>
</connects>
<technologies>
<technology name="">
<attribute name="DATASHEET-URL" value="https://www.we-online.com/redexpert/spec/750032051?ae"/>
<attribute name="IOUT" value="150mA"/>
<attribute name="ISAT" value="5A"/>
<attribute name="L" value="10uH"/>
<attribute name="LS" value="0.05uH"/>
<attribute name="N" value="1:10"/>
<attribute name="PART-NUMBER" value=" 750032051 "/>
<attribute name="SIZE" value="EFD20"/>
<attribute name="VALUE" value="3 - 24Vin"/>
<attribute name="VIN" value="3 - 24 V (DC)"/>
<attribute name="VOUT" value="300V"/>
<attribute name="VT" value="1000 V(AC)"/>
</technology>
</technologies>
</device>
</devices>
</deviceset>
<deviceset name="750032052" prefix="T">
<description>&lt;b&gt; &lt;b&gt; WE-FB 3751 Flyback Transformer for LT3751&lt;/B&gt;
&lt;br&gt;
&lt;BR&gt;

Characteristics
&lt;BR&gt;
&lt;br&gt; &lt;/B&gt;Isolation voltage: 1 kVAC
&lt;br&gt;Operating temperature: –40 ºC to +125 ºC (incl. self-heating)
&lt;br&gt;Especially designed for LT3751

&lt;br&gt;
&lt;br&gt;&lt;b&gt; Applications &lt;BR&gt;&lt;br&gt;
&lt;/B&gt; Transformer for capacitor charger or high voltage outputs&lt;BR&gt;

&lt;br&gt;&lt;br&gt;

&lt;br&gt;&lt;a href="https://www.we-online.com/components/media/o14782v209%20Family_WE-FB_3751.jpg" title="Enlarge picture"&gt;
&lt;img src="https://www.we-online.com/components/media/o14782v209%20Family_WE-FB_3751.jpg" width="320"&gt;&lt;/a&gt;&lt;p&gt;
Details see: &lt;a href="www.we-online.com/catalog/WE-FB-3751/?utm_source=eagle_model&amp;utm_medium=description_link&amp;utm_campaign=eisos_eagle"&gt;www.we-online.com/en/components/products/WE-FB-3751&lt;/a&gt;&lt;p&gt;


Updated by Ella 2025-02-14&lt;br&gt;
2025(C) Wurth Elektronik</description>
<gates>
<gate name="G$1" symbol="WE-FB3751_EFD20_1W:1W"/>
</gates>
<devices>
<device name="" package="WE-FB3751_EFD20">
<connects>
<connect gate="G$1" pin="1" pad="1"/>
<connect gate="G$1" pin="10" pad="10"/>
<connect gate="G$1" pin="4+5" pad="4 5"/>
<connect gate="G$1" pin="6+7" pad="6 7"/>
</connects>
<technologies>
<technology name="">
<attribute name="DATASHEET-URL" value="https://www.we-online.com/redexpert/spec/750032052?ae"/>
<attribute name="IOUT" value="150mA"/>
<attribute name="ISAT" value="10A"/>
<attribute name="L" value="10uH"/>
<attribute name="LS" value="0.3uH"/>
<attribute name="N" value="1:10"/>
<attribute name="PART-NUMBER" value=" 750032052 "/>
<attribute name="SIZE" value="EFD20"/>
<attribute name="VALUE" value="3 - 24Vin"/>
<attribute name="VIN" value="3 - 24 V (DC)"/>
<attribute name="VOUT" value="300V"/>
<attribute name="VT" value="1000 V(AC)"/>
</technology>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
</drawing>
</eagle>
