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帮推荐个带阻三极管啊

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 楼主| davali 发表于 2009-5-11 11:23 | 显示全部楼层 |阅读模式
三极管, 电阻, 电器, 继电器, 贴片三极管
    我搞的产品上要用9个2N5551三极管带9个12V的继电器，每个三极管基极要2个电阻，想找个内部带电阻的贴片三极管，大家帮推荐一下啊。
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tyw 发表于 2009-5-12 08:22 | 显示全部楼层

其实找这种管子成本会很高,倒不如找贴片电阻排

<br /><font color=#008040>电阻排成本比单个电阻要高,但比带阻管子要低.</font><br /><font color=#008040>依我所见,最佳方案是都用单个的,继电器边上应该有空间装这几个电阻,再不成可换0603封装的.</font><br /><font color=#FF0000></font>&nbsp;<br /><font color=#FF0000>火炬-电阻排.pdf&nbsp;→</font>&nbsp;<a href="https://bbs.21ic.com/upfiles/img/20095/200951281859559.pdf" target=_blank>https://bbs.21ic.com/upfiles/img/20095/200951281859559.pdf</a><br /><br /><br /><img src="https://bbs.21ic.com/upfiles/img/20095/200951281949718.gif"><br /><br /><br /><br /><font color=#FF0000>MUN5216__IC-ON_LINE[1].CN.pdf&nbsp;→&nbsp;</font><a href="https://bbs.21ic.com/upfiles/img/20094/200942985045304.pdf" target=_blank>https://bbs.21ic.com/upfiles/img/20094/200942985045304.pdf</a><br /><br /><br /><img src="https://bbs.21ic.com/upfiles/img/20094/200942984942223.gif"><br /><br /><img src="https://bbs.21ic.com/upfiles/img/20094/20094298504243.gif"><br /><br /><br />&nbsp;
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 楼主| davali 发表于 2009-5-13 08:55 | 显示全部楼层

Ic只有100mA的管子带40mA的继电器余量是不是小点啊？

&nbsp;&nbsp;&nbsp;我一直都是在用分立电阻加三极管，只是觉得元件有点多。<br />&nbsp;&nbsp;&nbsp;用楼上推荐的管子是不是Ic小了点，可靠性要变差啊。我用的是2N5551.再有问下楼上推荐的管子大约多少钱？还有电流大点的吗?
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tyw 发表于 2009-5-13 11:50 | 显示全部楼层

用狗狗去搜"Dual Bias Resistor Transistors"图片

好象都是50v100mA的,只用12v40mA应该是没问题的,价格么,哼哼,恶贵,少量另售恐怕难找<br />&nbsp;<br /><a href="http://images.google.com.sg/images?sourceid=navclient&hl=zh-CN&rls=GGLG,GGLG:2008-50,GGLG:zh-CN&q=Dual%20Bias%20Resistor%20Transistors&um=1&ie=UTF-8&sa=N&tab=wi" target=_blank>http://images.google.com.sg/images?sourceid=navclient&hl=zh-CN&rls=GGLG,GGLG:2008-50,GGLG:zh-CN&q=Dual%20Bias%20Resistor%20Transistors&um=1&ie=UTF-8&sa=N&tab=wi</a><br />&nbsp;<br /><iframe width="500" height="500" border="1" src="http://images.google.com.sg/images?sourceid=navclient&hl=zh-CN&rls=GGLG,GGLG:2008-50,GGLG:zh-CN&q=Dual%20Bias%20Resistor%20Transistors&um=1&ie=UTF-8&sa=N&tab=wi"></iframe><br />&nbsp;<br />&nbsp;<table class=ubb cellspacing=0><TR><td class=ubb><B>&nbsp;FindChip</B></td></TR></table><table class=ubb cellspacing=0></table><table class=ubb cellspacing=0><TR><td class=ubb><H2>Mouser&nbsp;Electronics</H2></td><td class=ubb>(Top&nbsp;of&nbsp;page)</td></TR></table><table class=ubb cellspacing=0><TR>Mouser&nbsp;Electronics&nbsp;Product&nbsp;DetailPricingAvailability</TR><TR><td class=ubb><table class=ubb cellspacing=0><TR><td class=ubb><B>Mouser&nbsp;Part&nbsp;#:</B></td><td class=ubb>863-MUN5214T1G</td><td class=ubb></td><td class=ubb></td></TR><TR><td class=ubb><B>Mfr.&nbsp;Part&nbsp;#:</B></td><td class=ubb>MUN5214T1G</td><td class=ubb><img src="http://www.mouser.com/images/pdf.gif">&nbsp;</td><td class=ubb>Data&nbsp;Sheet&nbsp;</td></TR><TR><td class=ubb><B>Mfr.:</B></td><td class=ubb>ON&nbsp;Semiconductor</td><td class=ubb>&nbsp;</td><td class=ubb>&nbsp;</td></TR><TR><td class=ubb><B>Description:</B></td><td class=ubb>100mA&nbsp;50V&nbsp;BRT&nbsp;NPN</td></TR><TR><td class=ubb><B>RoHS:</B></td><td class=ubb>Yes</td></TR></table></td><td class=ubb><table class=ubb cellspacing=0><TR><td class=ubb>1:&nbsp;</td><td class=ubb>&nbsp;$0.21&nbsp;</td></TR><TR><td class=ubb>25:&nbsp;</td><td class=ubb>&nbsp;View&nbsp;</td></TR><TR><td class=ubb>&nbsp;</td></TR><TR><td class=ubb><table class=ubb cellspacing=0><TR><td class=ubb>Min.:&nbsp;</td><td class=ubb>1</td></TR></table></td></TR></table></td><td class=ubb>In&nbsp;Stock&nbsp;<br />Click&nbsp;to&nbsp;View&nbsp;<br /><br />BUY&nbsp;</td></TR><TR><td class=ubb><table class=ubb cellspacing=0><TR><td class=ubb><B>Mouser&nbsp;Part&nbsp;#:</B></td><td class=ubb>863-MUN5214DW1T1G</td><td class=ubb></td><td class=ubb></td></TR><TR><td class=ubb><B>Mfr.&nbsp;Part&nbsp;#:</B></td><td class=ubb>MUN5214DW1T1G</td><td class=ubb><img src="http://www.mouser.com/images/pdf.gif">&nbsp;</td><td class=ubb>Data&nbsp;Sheet&nbsp;</td></TR><TR><td class=ubb><B>Mfr.:</B></td><td class=ubb>ON&nbsp;Semiconductor</td><td class=ubb>&nbsp;</td><td class=ubb>&nbsp;</td></TR><TR><td class=ubb><B>Description:</B></td><td class=ubb>SS&nbsp;BR&nbsp;XSTR&nbsp;NPN&nbsp;50V</td></TR><TR><td class=ubb><B>RoHS:</B></td><td class=ubb>Yes</td></TR></table></td><td class=ubb><table class=ubb cellspacing=0><TR><td class=ubb>1:&nbsp;</td><td class=ubb>&nbsp;$0.08&nbsp;</td></TR><TR><td class=ubb>25:&nbsp;</td><td class=ubb>&nbsp;View&nbsp;</td></TR><TR><td class=ubb>&nbsp;</td></TR><TR><td class=ubb><table class=ubb cellspacing=0><TR><td class=ubb>Min.:&nbsp;</td><td class=ubb>1</td></TR></table></td></TR></table></td><td class=ubb>In&nbsp;Stock&nbsp;<br />Click&nbsp;to&nbsp;View&nbsp;<br /><br />BUY&nbsp;</td></TR><TR><td class=ubb><table class=ubb cellspacing=0><TR><td class=ubb><B>Mouser&nbsp;Part&nbsp;#:</B></td><td class=ubb>863-MUN5214DW1T1</td><td class=ubb></td><td class=ubb></td></TR><TR><td class=ubb><B>Mfr.&nbsp;Part&nbsp;#:</B></td><td class=ubb>MUN5214DW1T1</td><td class=ubb><img src="http://www.mouser.com/images/pdf.gif">&nbsp;</td><td class=ubb>Data&nbsp;Sheet&nbsp;</td></TR><TR><td class=ubb><B>Mfr.:</B></td><td class=ubb>ON&nbsp;Semiconductor</td><td class=ubb>&nbsp;</td><td class=ubb>&nbsp;</td></TR><TR><td class=ubb><B>Description:</B></td><td class=ubb>100mA&nbsp;50V&nbsp;BRT&nbsp;Dual</td></TR><TR><td class=ubb><B>RoHS:</B></td><td class=ubb>No</td></TR></table></td><td class=ubb><table class=ubb cellspacing=0><TR><td class=ubb>10700:&nbsp;</td><td class=ubb>&nbsp;View&nbsp;</td></TR><TR><td class=ubb>&nbsp;</td></TR><TR><td class=ubb><table class=ubb cellspacing=0><TR><td class=ubb>Min.:&nbsp;</td><td class=ubb>10700</td></TR></table></td></TR></table></td><td class=ubb>[/url]<br />[url=http://mouser.com/search/ProductDetail.aspx?qs=ZpPixqFcBtzG12e2Wrlaag%3d%3d]Click&nbsp;to&nbsp;View&nbsp;<br /><br />BUY&nbsp;</td></TR><TR><td class=ubb><table class=ubb cellspacing=0><TR><td class=ubb><B>Mouser&nbsp;Part&nbsp;#:</B></td><td class=ubb>863-MUN5214T1</td><td class=ubb></td><td class=ubb></td></TR><TR><td class=ubb><B>Mfr.&nbsp;Part&nbsp;#:</B></td><td class=ubb>MUN5214T1</td><td class=ubb><img src="http://www.mouser.com/images/pdf.gif">&nbsp;</td><td class=ubb>Data&nbsp;Sheet&nbsp;</td></TR><TR><td class=ubb><B>Mfr.:</B></td><td class=ubb>ON&nbsp;Semiconductor</td><td class=ubb>&nbsp;</td><td class=ubb>&nbsp;</td></TR><TR><td class=ubb><B>Description:</B></td><td class=ubb>100mA&nbsp;50V&nbsp;BRT&nbsp;NPN</td></TR><TR><td class=ubb><B>RoHS:</B></td><td class=ubb>No</td></TR></table></td><td class=ubb><table class=ubb cellspacing=0><TR><td class=ubb>&nbsp;</td></TR><TR><td class=ubb><table class=ubb cellspacing=0><TR><td class=ubb>Min.:&nbsp;</td><td class=ubb>1</td></TR></table></td></TR></table></td><td class=ubb>[/url]<br />[url=http://mouser.com/search/ProductDetail.aspx?qs=ZpPixqFcBtz1vOXyYY5qJw%3d%3d]Click&nbsp;to&nbsp;View&nbsp;<br /><br />BUY&nbsp;</td></TR></table><br /><I>Query&nbsp;finished&nbsp;in&nbsp;0&nbsp;seconds</I>&nbsp;<br /><hr><table class=ubb cellspacing=0><TR><td class=ubb><H2>Digi-Key</H2></td><td class=ubb>(Top&nbsp;of&nbsp;page)</td></TR></table><table class=ubb cellspacing=0><TR><font color=#FFFFFF>Part&nbsp;#</font><font color=#FFFFFF>Mfg.&nbsp;Part&nbsp;#</font><font color=#FFFFFF>Description</font><font color=#FFFFFF>In&nbsp;Stock</font><font color=#FFFFFF>Link</font><font color=#FFFFFF>Unit&nbsp;Price</font></TR><TR><td class=ubb>MUN5214DW1T1GOSCT-ND</td><td class=ubb>MUN5214DW1T1G</td><td class=ubb>TRANS&nbsp;BRT&nbsp;NPN&nbsp;DUAL&nbsp;50V&nbsp;SOT-363</td><td class=ubb>Yes</td><td class=ubb>Buy</td><td class=ubb>1:&nbsp;.35,&nbsp;10:&nbsp;.204</td></TR><TR><td class=ubb>MUN5214DW1T1GOSDKR-ND</td><td class=ubb>MUN5214DW1T1G</td><td class=ubb>TRANS&nbsp;BRT&nbsp;NPN&nbsp;DUAL&nbsp;50V&nbsp;SOT-363</td><td class=ubb>Yes</td><td class=ubb>Buy</td><td class=ubb>1:&nbsp;.35,&nbsp;10:&nbsp;.204</td></TR><TR><td class=ubb>MUN5214DW1T1GOSTR-ND</td><td class=ubb>MUN5214DW1T1G</td><td class=ubb>TRANS&nbsp;BRT&nbsp;NPN&nbsp;DUAL&nbsp;50V&nbsp;SOT-363</td><td class=ubb>Yes</td><td class=ubb>Buy</td><td class=ubb>3000:&nbsp;.048,&nbsp;6000:&nbsp;.041</td></TR><TR><td class=ubb>MUN5214T1OSCT-ND</td><td class=ubb>MUN5214T1</td><td class=ubb>TRANS&nbsp;BRT&nbsp;NPN&nbsp;100MA&nbsp;50V&nbsp;SOT323</td><td class=ubb>Yes</td><td class=ubb>Buy</td><td class=ubb>10:&nbsp;.21,&nbsp;100:&nbsp;.1179</td></TR><TR><td class=ubb>MUN5214T1OSTR-ND</td><td class=ubb>MUN5214T1</td><td class=ubb>TRANS&nbsp;BRT&nbsp;NPN&nbsp;100MA&nbsp;50V&nbsp;SOT323</td><td class=ubb>Yes</td><td class=ubb>Buy</td><td class=ubb>24000:&nbsp;.017</td></TR></table><br /><I>Query&nbsp;finished&nbsp;in&nbsp;0&nbsp;seconds</I>&nbsp;<br /><hr><table class=ubb cellspacing=0><TR><td class=ubb><H2>Future&nbsp;Electronics</H2></td><td class=ubb>(Top&nbsp;of&nbsp;page)</td></TR></table><table class=ubb cellspacing=0><TR><font color=#FFFFFF>Mfg.</font><font color=#FFFFFF>Part&nbsp;#</font><font color=#FFFFFF>In&nbsp;Stock</font><font color=#FFFFFF>Buy</font><font color=#FFFFFF>Unit&nbsp;Price&nbsp;(US$)</font><font color=#FFFFFF>Pkg&nbsp;Qty</font></TR><TR><td class=ubb>ON&nbsp;SEMICONDUCTOR</td><td class=ubb>MUN5214DW1T1G</td><td class=ubb>No</td><td class=ubb>&nbsp;</td><td class=ubb>3000+:&nbsp;0.036</td><td class=ubb>3000</td></TR></table><br /><I>Query&nbsp;finished&nbsp;in&nbsp;0&nbsp;seconds</I>&nbsp;<br /><hr><table class=ubb cellspacing=0><TR><td class=ubb><H2>Arrow&nbsp;Electronics</H2></td><td class=ubb>(Top&nbsp;of&nbsp;page)</td></TR></table><table class=ubb cellspacing=0><TR>Manufacturer&nbsp;Part&nbsp;#Manufacturer&nbsp;NameDescriptionRoHSLead&nbsp;TimeAvailablePriceBuy</TR><TR><td class=ubb>MUN5214DW1T1G</td><td class=ubb>ON&nbsp;Semiconductor</td><td class=ubb>Trans&nbsp;Digital&nbsp;BJT&nbsp;NPN&nbsp;50V&nbsp;100mA&nbsp;6-Pin&nbsp;SC-88&nbsp;T/R</td><td class=ubb><img src="http://app.arrownac.com/aws/images/eu_compliant.gif">&nbsp;<br /><img src="http://app.arrownac.com/aws/images/china_rohs_compliant.gif"></td><td class=ubb>5&nbsp;weeks</td><td class=ubb>Qty:&nbsp;54,000<br />Multiple:&nbsp;3000</td><td class=ubb>&nbsp;$0.037</td><td class=ubb><img src="http://www.arrownac.com/images/layout/btnbuy.gif"></td></TR><TR><td class=ubb>MUN5214DW1T1</td><td class=ubb>ON&nbsp;Semiconductor</td><td class=ubb>Trans&nbsp;Digital&nbsp;BJT&nbsp;NPN&nbsp;50V&nbsp;100mA&nbsp;6-Pin&nbsp;SC-88&nbsp;T/R</td><td class=ubb><img src="http://app.arrownac.com/aws/images/not_compliant.gif">&nbsp;<br /><img src="http://app.arrownac.com/aws/images/china_rohs_epup_50.gif"></td><td class=ubb>4&nbsp;weeks</td><td class=ubb>Multiple:&nbsp;3000<br />No&nbsp;Stock.<br />Call&nbsp;1-800-833-3557</td><td class=ubb>&nbsp;$0.14</td><td class=ubb>&nbsp;</td></TR><TR><td class=ubb>MUN5214T1</td><td class=ubb>ON&nbsp;Semiconductor</td><td class=ubb>Trans&nbsp;Digital&nbsp;BJT&nbsp;NPN&nbsp;50V&nbsp;100mA&nbsp;3-Pin&nbsp;SOT-323&nbsp;T/R</td><td class=ubb><img src="http://app.arrownac.com/aws/images/not_compliant.gif">&nbsp;<br /><img src="http://app.arrownac.com/aws/images/china_rohs_epup_50.gif"></td><td class=ubb>&nbsp;</td><td class=ubb>Multiple:&nbsp;3000<br />No&nbsp;Stock.<br />Discontinued/Obsolete<br />Call&nbsp;1-800-833-3557</td><td class=ubb>&nbsp;$0.11</td><td class=ubb>&nbsp;</td></TR><TR><td class=ubb>MUN5214T1G</td><td class=ubb>ON&nbsp;Semiconductor</td><td class=ubb>Trans&nbsp;Digital&nbsp;BJT&nbsp;NPN&nbsp;50V&nbsp;100mA&nbsp;3-Pin&nbsp;SOT-323&nbsp;T/R</td><td class=ubb><img src="http://app.arrownac.com/aws/images/eu_compliant.gif">&nbsp;<br /><img src="http://app.arrownac.com/aws/images/china_rohs_compliant.gif"></td><td class=ubb>5&nbsp;weeks</td><td class=ubb>Multiple:&nbsp;1<br />No&nbsp;Stock.<br />Call&nbsp;1-800-833-3557</td><td class=ubb>&nbsp;$0.018</td><td class=ubb>&nbsp;</td></TR><TR><td class=ubb>4&nbsp;of&nbsp;4&nbsp;parts.</td></TR></table><br /><I>Query&nbsp;finished&nbsp;in&nbsp;0&nbsp;seconds</I>&nbsp;<br /><hr><table class=ubb cellspacing=0><TR><td class=ubb><H2>Newark</H2></td><td class=ubb>(Top&nbsp;of&nbsp;page)</td></TR></table><table class=ubb cellspacing=0><TR><font color=#FFFFFF>Newark<br />Part&nbsp;#</font><font color=#FFFFFF>Manufacturer</font><font color=#FFFFFF>Mfg<br />Part&nbsp;#</font><font color=#FFFFFF>Description</font><font color=#FFFFFF>Avail.</font><font color=#FFFFFF>Pack<br />Details</font><font color=#FFFFFF>Price</font><font color=#FFFFFF>Buy</font></TR><TR><td class=ubb>10N9540</td><td class=ubb>ON&nbsp;SEMICONDUCTOR</td><td class=ubb>MUN5214DW1T1G</td><td class=ubb>Transistor;&nbsp;Collector&nbsp;Emitter&nbsp;Voltage,&nbsp;V(br)ceo:50V;&nbsp;Continuous&nbsp;Collector&nbsp;Current,&nbsp;Ic:0.1A;&nbsp;Base&nbsp;Input&nbsp;Resistor,&nbsp;R1:10000ohm;&nbsp;Base-Emitter&nbsp;Resistor,&nbsp;R2:47000ohm;&nbsp;Resistor&nbsp;Ratio,&nbsp;R1/R2:0.213;&nbsp;Leaded&nbsp;Process&nbsp;Compatible:Yes&nbsp;RoHS&nbsp;Compliant:&nbsp;Yes</td><td class=ubb>6000</td><td class=ubb>Cut&nbsp;tape</td><td class=ubb>1-24:&nbsp;.062,&nbsp;25-99:&nbsp;.042,&nbsp;100-249:&nbsp;.036,&nbsp;250:&nbsp;.031</td><td class=ubb>Buy</td></TR><TR><td class=ubb>88H4935</td><td class=ubb>ON&nbsp;SEMICONDUCTOR</td><td class=ubb>MUN5214T1G</td><td class=ubb>Small&nbsp;Signal&nbsp;Pre-Biased&nbsp;Transistor;&nbsp;Collector&nbsp;Emitter&nbsp;Voltage,&nbsp;V(br)ceo:50V;&nbsp;Base&nbsp;Input&nbsp;Resistor,&nbsp;R1:10kohm;&nbsp;Base-Emitter&nbsp;Resistor,&nbsp;R2:47kohm;&nbsp;Resistor&nbsp;Ratio,&nbsp;R1/R2:0.21;&nbsp;Leaded&nbsp;Process&nbsp;Compatible:Yes;&nbsp;Package/Case:SOT-323&nbsp;RoHS&nbsp;Compliant:&nbsp;Yes</td><td class=ubb>0</td><td class=ubb>Tape/reel&nbsp;of&nbsp;1</td><td class=ubb>1&nbsp;+:&nbsp;.016</td><td class=ubb>&nbsp;</td></TR></table><br /><I>Query&nbsp;finished&nbsp;in&nbsp;0&nbsp;seconds</I>&nbsp;<br /><hr><table class=ubb cellspacing=0><TR><td class=ubb><H2>H&nbsp;&&nbsp;R&nbsp;Enterprises</H2></td><td class=ubb>(Top&nbsp;of&nbsp;page)</td></TR></table><table class=ubb cellspacing=0><TR><font color=#FFFFFF>Mfg.</font><font color=#FFFFFF>Part&nbsp;#</font><font color=#FFFFFF>Date&nbsp;Code</font><font color=#FFFFFF>Stock</font></TR><TR><td class=ubb>ON</td><td class=ubb>MUN5214T1</td><td class=ubb>01</td><td class=ubb>1003&nbsp;</td></TR><TR><td class=ubb>ON</td><td class=ubb>MUN5214T1</td><td class=ubb>N/A</td><td class=ubb>129&nbsp;</td></TR></table><br /><I>Query&nbsp;finished&nbsp;in&nbsp;0&nbsp;seconds</I>&nbsp;<br /><hr><table class=ubb cellspacing=0><TR><td class=ubb><H2>America&nbsp;II&nbsp;Electronics</H2></td><td class=ubb>(Top&nbsp;of&nbsp;page)</td></TR></table><table class=ubb cellspacing=0><TR><font color=#FFFFFF>Mfg.</font><font color=#FFFFFF>Part&nbsp;#</font><font color=#FFFFFF>Stock</font></TR><TR><td class=ubb>ON&nbsp;SEMICONDUCTOR</td><td class=ubb>MUN5214T1</td><td class=ubb>410011</td></TR></table><br /><I>Query&nbsp;finished&nbsp;in&nbsp;1&nbsp;second</I>&nbsp;<br />
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