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	<title>VÁLVULA 6CE3 &#8211; Hobbytools &#8211; Ferramentas para hobbistas</title>
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	<title>VÁLVULA 6CE3 &#8211; Hobbytools &#8211; Ferramentas para hobbistas</title>
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		<title>Válvula 6CE3</title>
		<link>https://www.hobbytools.com.br/produto/valvula-6ce3-2/</link>
					<comments>https://www.hobbytools.com.br/produto/valvula-6ce3-2/#respond</comments>
		
		<dc:creator><![CDATA[natali Montanhini]]></dc:creator>
		<pubDate>Mon, 13 Oct 2025 13:44:11 +0000</pubDate>
				<guid isPermaLink="false">https://www.hobbytools.com.br/?post_type=product&#038;p=4142</guid>

					<description><![CDATA[<p data-start="253" data-end="716">A <strong data-start="255" data-end="263">6CE3</strong> é uma <strong data-start="270" data-end="309">válvula retificadora de alta tensão</strong>, do tipo <strong data-start="319" data-end="357">diodo de deflexão (“damper diode”)</strong>, projetada para uso em <strong data-start="381" data-end="420">televisores com deflexão horizontal</strong> e em circuitos de <strong data-start="439" data-end="469">retificação de alta tensão</strong> associados ao flyback (transformador de linha).<br data-start="517" data-end="520" />Ela foi projetada para suportar picos de tensão elevados (acima de 5 kV) e correntes de pico de centenas de miliampères, dissipando energia durante o retorno do feixe eletrônico no tubo de imagem.</p>
<p data-start="718" data-end="934">Por sua robustez e isolamento interno, a 6CE3 também pode ser usada em projetos de <strong data-start="801" data-end="841">fontes de alimentação de alta tensão</strong>, <strong data-start="843" data-end="869">retificadores lineares</strong>, e circuitos de <strong data-start="886" data-end="902">modulação RF</strong> ou <strong data-start="906" data-end="933">osciladores de potência</strong>.</p>]]></description>
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<h6 class="sr-only"></h6>
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<hr data-start="178" data-end="181" />
<h2 data-start="183" data-end="233">🧩 Ficha Técnica – Válvula 6CE3 / 6CE3A / 6DW4A</h2>
<h3 data-start="235" data-end="252">📘 Introdução</h3>
<p data-start="253" data-end="716">A <strong data-start="255" data-end="263">6CE3</strong> é uma <strong data-start="270" data-end="309">válvula retificadora de alta tensão</strong>, do tipo <strong data-start="319" data-end="357">diodo de deflexão (“damper diode”)</strong>, projetada para uso em <strong data-start="381" data-end="420">televisores com deflexão horizontal</strong> e em circuitos de <strong data-start="439" data-end="469">retificação de alta tensão</strong> associados ao flyback (transformador de linha).<br data-start="517" data-end="520" />Ela foi projetada para suportar picos de tensão elevados (acima de 5 kV) e correntes de pico de centenas de miliampères, dissipando energia durante o retorno do feixe eletrônico no tubo de imagem.</p>
<p data-start="718" data-end="934">Por sua robustez e isolamento interno, a 6CE3 também pode ser usada em projetos de <strong data-start="801" data-end="841">fontes de alimentação de alta tensão</strong>, <strong data-start="843" data-end="869">retificadores lineares</strong>, e circuitos de <strong data-start="886" data-end="902">modulação RF</strong> ou <strong data-start="906" data-end="933">osciladores de potência</strong>.</p>
<hr data-start="936" data-end="939" />
<h3 data-start="941" data-end="965">⚙️ Estrutura Interna</h3>
<ul data-start="966" data-end="1275">
<li data-start="966" data-end="1028">
<p data-start="968" data-end="1028">Tipo: <strong data-start="974" data-end="1025">Diodo retificador de alta tensão (damper diode)</strong>.</p>
</li>
<li data-start="1029" data-end="1158">
<p data-start="1031" data-end="1158">Função principal: absorver o pulso de retorno (“flyback pulse”) no circuito de deflexão horizontal e retificar a alta tensão.</p>
</li>
<li data-start="1159" data-end="1275">
<p data-start="1161" data-end="1275">Construção robusta com <strong data-start="1184" data-end="1208">aquecimento indireto</strong>, <strong data-start="1210" data-end="1225">placa única</strong>, e <strong data-start="1229" data-end="1249">isolação elevada</strong> entre cátodo e filamento.</p>
</li>
</ul>
<hr data-start="1277" data-end="1280" />
<h3 data-start="1282" data-end="1311">⚙️ Características Gerais</h3>
<div class="_tableContainer_1rjym_1">
<div class="group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse" tabindex="-1">
<table class="w-fit min-w-(--thread-content-width)" data-start="1312" data-end="1897">
<thead data-start="1312" data-end="1333">
<tr data-start="1312" data-end="1333">
<th data-start="1312" data-end="1324" data-col-size="sm">Parâmetro</th>
<th data-start="1324" data-end="1333" data-col-size="md">Valor</th>
</tr>
</thead>
<tbody data-start="1357" data-end="1897">
<tr data-start="1357" data-end="1400">
<td data-start="1357" data-end="1364" data-col-size="sm">Tipo</td>
<td data-start="1364" data-end="1400" data-col-size="md">Diodo retificador de alta tensão</td>
</tr>
<tr data-start="1401" data-end="1468">
<td data-start="1401" data-end="1420" data-col-size="sm">Aplicação típica</td>
<td data-start="1420" data-end="1468" data-col-size="md">Retificação no flyback / deflexão horizontal</td>
</tr>
<tr data-start="1469" data-end="1510">
<td data-start="1469" data-end="1482" data-col-size="sm">Envoltório</td>
<td data-start="1482" data-end="1510" data-col-size="md">Vidro – Base Octal (B8G)</td>
</tr>
<tr data-start="1511" data-end="1547">
<td data-start="1511" data-end="1523" data-col-size="sm">Filamento</td>
<td data-start="1523" data-end="1547" data-col-size="md">Aquecimento indireto</td>
</tr>
<tr data-start="1548" data-end="1586">
<td data-start="1548" data-end="1577" data-col-size="sm">Tensão de aquecimento (Uf)</td>
<td data-start="1577" data-end="1586" data-col-size="md">6,3 V</td>
</tr>
<tr data-start="1587" data-end="1627">
<td data-start="1587" data-end="1618" data-col-size="sm">Corrente de aquecimento (If)</td>
<td data-start="1618" data-end="1627" data-col-size="md">1,6 A</td>
</tr>
<tr data-start="1628" data-end="1667">
<td data-start="1628" data-end="1657" data-col-size="sm">Corrente de pico (Ip máx.)</td>
<td data-start="1657" data-end="1667" data-col-size="md">800 mA</td>
</tr>
<tr data-start="1668" data-end="1704">
<td data-start="1668" data-end="1694" data-col-size="sm">Corrente média contínua</td>
<td data-start="1694" data-end="1704" data-col-size="md">200 mA</td>
</tr>
<tr data-start="1705" data-end="1747">
<td data-start="1705" data-end="1736" data-col-size="sm">Tensão inversa de pico (PIV)</td>
<td data-start="1736" data-end="1747" data-col-size="md">6.000 V</td>
</tr>
<tr data-start="1748" data-end="1794">
<td data-start="1748" data-end="1776" data-col-size="sm">Tensão direta de condução</td>
<td data-start="1776" data-end="1794" data-col-size="md">~25 V a 200 mA</td>
</tr>
<tr data-start="1795" data-end="1832">
<td data-start="1795" data-end="1824" data-col-size="sm">Dissipação máxima da placa</td>
<td data-start="1824" data-end="1832" data-col-size="md">11 W</td>
</tr>
<tr data-start="1833" data-end="1874">
<td data-start="1833" data-end="1864" data-col-size="sm">Temperatura máxima do cátodo</td>
<td data-start="1864" data-end="1874" data-col-size="md">200 °C</td>
</tr>
<tr data-start="1875" data-end="1897">
<td data-start="1875" data-end="1882" data-col-size="sm">Base</td>
<td data-start="1882" data-end="1897" data-col-size="md">Octal (B8G)</td>
</tr>
</tbody>
</table>
</div>
</div>
<hr data-start="1899" data-end="1902" />
<h3 data-start="1904" data-end="1936">⚡ Dados Elétricos Detalhados</h3>
<div class="_tableContainer_1rjym_1">
<div class="group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse" tabindex="-1">
<table class="w-fit min-w-(--thread-content-width)" data-start="1937" data-end="2371">
<thead data-start="1937" data-end="1969">
<tr data-start="1937" data-end="1969">
<th data-start="1937" data-end="1949" data-col-size="sm">Parâmetro</th>
<th data-start="1949" data-end="1960" data-col-size="sm">Condição</th>
<th data-start="1960" data-end="1969" data-col-size="sm">Valor</th>
</tr>
</thead>
<tbody data-start="2005" data-end="2371">
<tr data-start="2005" data-end="2057">
<td data-start="2005" data-end="2029" data-col-size="sm">Corrente direta média</td>
<td data-start="2029" data-end="2047" data-col-size="sm">Carga resistiva</td>
<td data-start="2047" data-end="2057" data-col-size="sm">200 mA</td>
</tr>
<tr data-start="2058" data-end="2128">
<td data-start="2058" data-end="2089" data-col-size="sm">Corrente de pico instantânea</td>
<td data-start="2089" data-end="2118" data-col-size="sm">Pulso de retorno (flyback)</td>
<td data-start="2118" data-end="2128" data-col-size="sm">800 mA</td>
</tr>
<tr data-start="2129" data-end="2183">
<td data-start="2129" data-end="2153" data-col-size="sm">Tensão inversa máxima</td>
<td data-start="2153" data-end="2175" data-col-size="sm">Pico (cátodo–placa)</td>
<td data-start="2175" data-end="2183" data-col-size="sm">6 kV</td>
</tr>
<tr data-start="2184" data-end="2238">
<td data-start="2184" data-end="2216" data-col-size="sm">Queda de tensão direta típica</td>
<td data-start="2216" data-end="2230" data-col-size="sm">Ia = 200 mA</td>
<td data-start="2230" data-end="2238" data-col-size="sm">25 V</td>
</tr>
<tr data-start="2239" data-end="2289">
<td data-start="2239" data-end="2276" data-col-size="sm">Resistência série interna (aprox.)</td>
<td data-start="2276" data-end="2280" data-col-size="sm">—</td>
<td data-start="2280" data-end="2289" data-col-size="sm">120 Ω</td>
</tr>
<tr data-start="2290" data-end="2335">
<td data-start="2290" data-end="2321" data-col-size="sm">Capacitância entre eletrodos</td>
<td data-start="2321" data-end="2325" data-col-size="sm">—</td>
<td data-start="2325" data-end="2335" data-col-size="sm">2,5 pF</td>
</tr>
<tr data-start="2336" data-end="2371">
<td data-start="2336" data-end="2359" data-col-size="sm">Tempo de aquecimento</td>
<td data-start="2359" data-end="2363" data-col-size="sm">—</td>
<td data-start="2363" data-end="2371" data-col-size="sm">12 s</td>
</tr>
</tbody>
</table>
</div>
</div>
<hr data-start="2373" data-end="2376" />
<h3 data-start="2378" data-end="2411">🔌 Pinagem – Base Octal (B8G)</h3>
<div class="_tableContainer_1rjym_1">
<div class="group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse" tabindex="-1">
<table class="w-fit min-w-(--thread-content-width)" data-start="2412" data-end="2595">
<thead data-start="2412" data-end="2430">
<tr data-start="2412" data-end="2430">
<th data-start="2412" data-end="2419" data-col-size="sm">Pino</th>
<th data-start="2419" data-end="2430" data-col-size="sm">Conexão</th>
</tr>
</thead>
<tbody data-start="2451" data-end="2595">
<tr data-start="2451" data-end="2470">
<td data-start="2451" data-end="2455" data-col-size="sm">1</td>
<td data-start="2455" data-end="2470" data-col-size="sm">Sem conexão</td>
</tr>
<tr data-start="2471" data-end="2488">
<td data-start="2471" data-end="2475" data-col-size="sm">2</td>
<td data-start="2475" data-end="2488" data-col-size="sm">Filamento</td>
</tr>
<tr data-start="2489" data-end="2502">
<td data-start="2489" data-end="2493" data-col-size="sm">3</td>
<td data-start="2493" data-end="2502" data-col-size="sm">Placa</td>
</tr>
<tr data-start="2503" data-end="2522">
<td data-start="2503" data-end="2507" data-col-size="sm">4</td>
<td data-start="2507" data-end="2522" data-col-size="sm">Sem conexão</td>
</tr>
<tr data-start="2523" data-end="2542">
<td data-start="2523" data-end="2527" data-col-size="sm">5</td>
<td data-start="2527" data-end="2542" data-col-size="sm">Sem conexão</td>
</tr>
<tr data-start="2543" data-end="2557">
<td data-start="2543" data-end="2547" data-col-size="sm">6</td>
<td data-start="2547" data-end="2557" data-col-size="sm">Cátodo</td>
</tr>
<tr data-start="2558" data-end="2575">
<td data-start="2558" data-end="2562" data-col-size="sm">7</td>
<td data-start="2562" data-end="2575" data-col-size="sm">Filamento</td>
</tr>
<tr data-start="2576" data-end="2595">
<td data-start="2576" data-end="2580" data-col-size="sm">8</td>
<td data-start="2580" data-end="2595" data-col-size="sm">Sem conexão</td>
</tr>
</tbody>
</table>
</div>
</div>
<blockquote data-start="2597" data-end="2732">
<p data-start="2599" data-end="2732"><em data-start="2599" data-end="2606">Nota:</em> Filamento entre pinos <strong data-start="2629" data-end="2638">2 e 7</strong>, placa no <strong data-start="2649" data-end="2654">3</strong>, cátodo no <strong data-start="2666" data-end="2671">6</strong>.<br data-start="2672" data-end="2675" />O filamento é isolado do cátodo (aquecimento indireto).</p>
</blockquote>
<hr data-start="2734" data-end="2737" />
<h3 data-start="2739" data-end="2764">🧠 Aplicações Típicas</h3>
<ul data-start="2765" data-end="3170">
<li data-start="2765" data-end="2858">
<p data-start="2767" data-end="2858"><strong data-start="2767" data-end="2805">Diodo amortecedor (“damper diode”)</strong> no circuito de deflexão horizontal de televisores.</p>
</li>
<li data-start="2859" data-end="2929">
<p data-start="2861" data-end="2929"><strong data-start="2861" data-end="2891">Retificador de alta tensão</strong> em fontes de CRT (tubos de imagem).</p>
</li>
<li data-start="2930" data-end="3009">
<p data-start="2932" data-end="3009"><strong data-start="2932" data-end="2973">Retificador de alta corrente pulsante</strong> em fontes lineares experimentais.</p>
</li>
<li data-start="3010" data-end="3093">
<p data-start="3012" data-end="3093">Circuitos de <strong data-start="3025" data-end="3047">retorno de flyback</strong> em transmissores e osciladores de potência.</p>
</li>
<li data-start="3094" data-end="3170">
<p data-start="3096" data-end="3170"><strong data-start="3096" data-end="3131">Fontes reguladas de 1 – 3 kV DC</strong>, em equipamentos de teste de válvulas.</p>
</li>
</ul>
<hr data-start="3172" data-end="3175" />
<h3 data-start="3177" data-end="3212">🔁 Equivalentes e Substituições</h3>
<div class="_tableContainer_1rjym_1">
<div class="group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse" tabindex="-1">
<table class="w-fit min-w-(--thread-content-width)" data-start="3213" data-end="3629">
<thead data-start="3213" data-end="3248">
<tr data-start="3213" data-end="3248">
<th data-start="3213" data-end="3222" data-col-size="sm">Modelo</th>
<th data-start="3222" data-end="3248" data-col-size="md">Diferença / Observação</th>
</tr>
</thead>
<tbody data-start="3285" data-end="3629">
<tr data-start="3285" data-end="3349">
<td data-start="3285" data-end="3293" data-col-size="sm">6CE3A</td>
<td data-start="3293" data-end="3349" data-col-size="md">Versão aprimorada, maior isolamento filamento-cátodo</td>
</tr>
<tr data-start="3350" data-end="3415">
<td data-start="3350" data-end="3358" data-col-size="sm">6DW4A</td>
<td data-start="3358" data-end="3415" data-col-size="md">Substituto direto (mesma base e parâmetros elétricos)</td>
</tr>
<tr data-start="3416" data-end="3464">
<td data-start="3416" data-end="3423" data-col-size="sm">6AU4</td>
<td data-start="3423" data-end="3464" data-col-size="md">Similar, mas com menor tensão inversa</td>
</tr>
<tr data-start="3465" data-end="3523">
<td data-start="3465" data-end="3475" data-col-size="sm">6AX4GTB</td>
<td data-start="3475" data-end="3523" data-col-size="md">Pode substituir em circuitos de menor tensão</td>
</tr>
<tr data-start="3524" data-end="3585">
<td data-start="3524" data-end="3531" data-col-size="sm">6DE4</td>
<td data-start="3531" data-end="3585" data-col-size="md">Substituição funcional com aquecimento mais rápido</td>
</tr>
<tr data-start="3586" data-end="3629">
<td data-start="3586" data-end="3594" data-col-size="sm">12CE3</td>
<td data-start="3594" data-end="3629" data-col-size="md">Versão para 12,6 V de filamento</td>
</tr>
</tbody>
</table>
</div>
</div>
<hr data-start="3631" data-end="3634" />
<h3 data-start="3636" data-end="3663">⚠️ Cuidados de Operação</h3>
<ul data-start="3664" data-end="4070">
<li data-start="3664" data-end="3779">
<p data-start="3666" data-end="3779"><strong data-start="3666" data-end="3683">Altas tensões</strong>: isolar adequadamente a válvula e evitar contato com a placa durante operação (picos &gt; 6 kV).</p>
</li>
<li data-start="3780" data-end="3841">
<p data-start="3782" data-end="3841">Usar <strong data-start="3787" data-end="3808">resistência série</strong> para limitar corrente de pico.</p>
</li>
<li data-start="3842" data-end="3922">
<p data-start="3844" data-end="3922">Evitar aquecimento excessivo (uso contínuo acima de 11 W reduz a vida útil).</p>
</li>
<li data-start="3923" data-end="3999">
<p data-start="3925" data-end="3999">Garantir <strong data-start="3934" data-end="3958">aquecimento completo</strong> antes da aplicação de tensão de placa.</p>
</li>
<li data-start="4000" data-end="4070">
<p data-start="4002" data-end="4070">Utilizar <strong data-start="4011" data-end="4031">soquete cerâmico</strong> quando possível, devido à alta tensão.</p>
</li>
</ul>
<hr data-start="4072" data-end="4075" />
<h3 data-start="4077" data-end="4118">📈 Curvas Características (descrição)</h3>
<ul data-start="4119" data-end="4347">
<li data-start="4119" data-end="4201">
<p data-start="4121" data-end="4201"><strong data-start="4121" data-end="4139">Curva Ia × Va:</strong> comportamento linear até 200 mA, saturando acima de 250 mA.</p>
</li>
<li data-start="4202" data-end="4269">
<p data-start="4204" data-end="4269"><strong data-start="4204" data-end="4222">Curva Vd × Id:</strong> queda típica de 20 – 25 V em regime nominal.</p>
</li>
<li data-start="4270" data-end="4347">
<p data-start="4272" data-end="4347"><strong data-start="4272" data-end="4290">Curva inversa:</strong> corrente de fuga &lt; 0,1 mA até 4 kV; &lt; 0,5 mA até 6 kV.</p>
</li>
</ul>
<hr data-start="4349" data-end="4352" />
<h3 data-start="4354" data-end="4383">🧾 Observações Históricas</h3>
<p data-start="4384" data-end="4850">A <strong data-start="4386" data-end="4394">6CE3</strong> surgiu no início da década de <strong data-start="4425" data-end="4433">1950</strong>, fabricada por <strong data-start="4449" data-end="4456">RCA</strong>, <strong data-start="4458" data-end="4464">GE</strong>, <strong data-start="4466" data-end="4478">Sylvania</strong>, <strong data-start="4480" data-end="4492">Tung-Sol</strong> e <strong data-start="4495" data-end="4505">Philco</strong>, como sucessora da 6AX4.<br data-start="4530" data-end="4533" />Foi amplamente usada em <strong data-start="4557" data-end="4588">televisores de grande porte</strong> e <strong data-start="4591" data-end="4620">monitores industriais CRT</strong>, desempenhando papel crucial no controle do retorno do feixe.<br data-start="4682" data-end="4685" />A variante <strong data-start="4696" data-end="4713">6CE3A / 6DW4A</strong> tornou-se uma das válvulas damper mais duráveis de sua categoria, ainda apreciada por restauradores e técnicos de televisores clássicos.</p>
<hr data-start="4852" data-end="4855" />
<p data-start="5023" data-end="5090" data-is-last-node="" data-is-only-node="">
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<div class="text-center"><a href="https://www.hobbytools.com.br/wp-content/uploads/2025/10/DATASHEET-VALVULA-6CE3-2.pdf">DATASHEET VALVULA 6CE3</a></div>
<div class="text-center"><a href="https://www.hobbytools.com.br/wp-content/uploads/2025/10/DATASHEET-VALVULA-6CE3-4.pdf">DATASHEET VALVULA 6CE3</a></div>
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