<p>作为新设计设备的声音元件使用而选择的是SMD(表面贴装型)扩音器。既有产品中将插销型和电磁扩音器替换为SMD的客户也不断增加。</p>
<h3>理由是・・・</h3>
<h3><strong>一、小型·薄型</strong></h3>
<p><img alt="小型·薄型 " data-entity-type="file" data-entity-uuid="ea96f2ac-b588-4df8-b3bd-e95983e71000" src="/sites/default/files/inline-images/%E5%B0%8F%E5%9E%8B%C2%B7%E8%96%84%E5%9E%8B.gif" /></p>
<p>厚度：约薄70%。※与本公司相比<br />
适合小型医疗/可穿戴设备等。</p>
<p>SMD和插销型的尺寸比较（単位: mm）</p>
<table border="1">
<tbody>
<tr>
</tr>
</tbody>
<thead>
<tr>
<th colspan="2">SMD</th>
<th colspan="2">插销型</th>
</tr>
</thead>
<tbody>
<tr>
<td><a href="https://www.murata.com/zh-cn/products/productdetail.aspx?cate=cgsubSoun…; target="_blank">PKMCS0909E4000-R1</a></td>
<td><a href="https://www.murata.com/zh-cn/products/productdetail.aspx?cate=cgsubSoun…; target="_blank">PKLCS1212E4001-R1</a></td>
<td><a href="https://www.murata.com/zh-cn/products/productdetail.aspx?cate=cgsubSoun…; target="_blank">PKM13EPYH4002-B0</a></td>
<td><a href="https://www.murata.com/zh-cn/products/productdetail.aspx?cate=cgsubSoun…; target="_blank">PKM22EPPH4007-B0</a></td>
</tr>
<tr>
<td><img alt="" src="https://www.murata.com/~/media/webrenewal/products/sound/sounder/smdsou…; /></td>
<td><img alt="" src="https://www.murata.com/~/media/webrenewal/products/sound/sounder/smdsou…; /></td>
<td><img alt="" src="https://www.murata.com/~/media/webrenewal/products/sound/sounder/smdsou…; /></td>
<td> </td>
</tr>
</tbody>
</table>
<p>其他品名尺寸<a href="https://www.murata.com/zh-cn/products/sound/sounder/pkmcs">可点击此处</a>查看。</p>
<h3><strong>二、低消耗电流</strong></h3>
<p><strong><img alt="低消耗电流" data-entity-type="file" data-entity-uuid="36def2c0-8b42-4281-b14c-41ab21922a41" src="/sites/default/files/inline-images/%E4%BD%8E%E6%B6%88%E8%80%97%E7%94%B5%E6%B5%81.gif" /></strong></p>
<p>电池使用寿命长</p>
<table border="1">
<thead>
<tr>
<th colspan="2">村田的SMD扩音器</th>
<th rowspan="2">
<div>普通的电磁蜂鸣器</div>
<div>(相当于10×10mm尺寸)</div>
</th>
</tr>
<tr>
<th><a href="https://www.murata.com/zh-cn/products/productdetail.aspx?cate=cgsubSoun…; target="_blank">PKMCS0909E4000-R1</a></th>
<th><a href="https://www.murata.com/zh-cn/products/productdetail.aspx?cate=cgsubSoun…; target="_blank">PKLCS1212E4001-R1</a></th>
</tr>
</thead>
<tbody>
<tr>
<td>✔ 0.3 mA</td>
<td>✔ 0.5 mA</td>
<td>20 mA</td>
</tr>
</tbody>
</table>
<p>※输入信号：±1.5Vo-p, 4kHz,矩形波</p>
<p>其他品名的电流值<a href="https://www.murata.com/zh-cn/support/faqs/products/sound/sounder/char/s…。</p>
<h3><strong>三、高音压（大音量）</strong></h3>
<p><strong><img alt="高音压(大音量)" data-entity-type="file" data-entity-uuid="9124adff-a46b-46ca-990e-ecd5d4cda26f" src="/sites/default/files/inline-images/%E9%AB%98%E9%9F%B3%E5%8E%8B%28%E5%A4%A7%E9%9F%B3%E9%87%8F%29.gif" /></strong></p>
<p>实现业界超大级的SMD压电扩音器</p>
<p><a href="https://www.murata.com/zh-cn/products/productdetail.aspx?cate=cgsubSoun…;实现100dB(Typ)<br />
※@2kHz、+12Vo-p方形波、10cm</p>
<ul>
<li>与同样2ｋHz插销型产品的比较数据，可点击此处查看。</li>
</ul>
<p><img alt="与同样2ｋHz插销型产品的比较数据" data-entity-type="file" data-entity-uuid="b0d322f9-acbb-44bb-ae8b-4b9267c52569" src="/sites/default/files/inline-images/%E4%B8%8E%E5%90%8C%E6%A0%B72%EF%BD%8BHz%E6%8F%92%E9%94%80%E5%9E%8B%E4%BA%A7%E5%93%81%E7%9A%84%E6%AF%94%E8%BE%83%E6%95%B0%E6%8D%AE.gif" /></p>
<ul>
<li>其他品名的音压<a href="https://www.murata.com/zh-cn/products/sound/sounder/pkmcs">可点击此处</a>查看。</li>
<li>各品名听音比较<a href="https://www.murata.com/zh-cn/products/sound/sounder/play">可点击此处</a>查看。</li>
</ul>
<h3><br />
<strong>四、简单组装</strong></h3>
<ul>
<li>不需要复杂的振动板/外壳设计。</li>
</ul>
<p>村田的SMD扩音器是以优良音响设计而成的。</p>
<p><img alt="以优良音响设计而成的" data-entity-type="file" data-entity-uuid="028ffe09-2a64-4879-82e7-3049f6f27b5c" src="/sites/default/files/inline-images/%E4%BB%A5%E4%BC%98%E8%89%AF%E9%9F%B3%E5%93%8D%E8%AE%BE%E8%AE%A1%E8%80%8C%E6%88%90%E7%9A%84_0.gif" /></p>
<ul>
<li>在贴装工序中，如果最大限度地选择SMD的话，可以省去波峰焊工序（包括粘结SMD元件）。</li>
</ul>
<h3><strong>五、回流焊前后特性变化小</strong></h3>
<p>您可不必担心热负载的影响进行使用。具体数据请点击此处查看。</p>
<p><img alt="回流焊前后特性变化小" data-entity-type="file" data-entity-uuid="691e97dd-0bef-4c1f-938f-a6955091d219" src="/sites/default/files/inline-images/%E5%9B%9E%E6%B5%81%E7%84%8A%E5%89%8D%E5%90%8E%E7%89%B9%E6%80%A7%E5%8F%98%E5%8C%96%E5%B0%8F.gif" /></p>
<h3><strong>六、汽车用</strong></h3>
<p>运用村田至今为止积累的设计·制造技术，也可长年用于车载应用中。</p>
<p>保证严格的可靠性条件（例.相当于AEC-Q200），详细试验条件・结果<a href="https://my.murata.com/zh/web/sound/members/exclusive/products/reliabili…;。</p>
<p><采用事例></p>
<ul>
<li>ETC・电动滑门・行驶记录仪・RKE应答</li>
<li>区（系安全带、指示灯灭、倒车档、停车辅助、车道保持、各种报警·键触摸声音）</li>
</ul>
<p><img alt="汽车用" data-entity-type="file" data-entity-uuid="d95923b4-f4b6-4535-92d2-01d80d548f47" src="/sites/default/files/inline-images/%E6%B1%BD%E8%BD%A6%E7%94%A8.gif" /></p>
<a href="http://murata.eetrend.com/article/2019-04/1002660.html"><img alt="压电扩音器" data-align="center" data-entity-type="file" data-entity-uuid="35e72019-ce97-46ea-ac01-7bf2cb28ea30" src="/sites/default/files/inline-images/image002_4.png" /></a><a href="https://go.murata.com/ww-cn-scc-sample2019.html?excid=cn_ad-p_tr_tbn_td… alt="申请" data-align="center" data-entity-type="file" data-entity-uuid="1d05419a-07f7-4d0e-9d6a-d15d386d69d6" height="84" src="/sites/default/files/inline-images/%E6%96%87%E5%AD%97-1.jpg" width="254" /></a>