请教以下几个芯片

这个芯片是贴片封装的<br />具体是什么型号啊<br />查了很久没有查到<br />谢谢大家<br />

<font color=#FF0080><font color=#008040>贴片代码查找工具,玩家必备</font></font><br /><br /><font color=#FF0080><font color=#008040>先用下面工具按代码查得管子型号</font><br /><font color=#0040FF>http://www.tkb-4u.com/code/smdcode/smdcodeM.php</font><br /><font color=#008040>再用这个按管子型号查数据手册</font><br /><font color=#0000FF>http://www.datasheetcatalog.com/</font><br /><font color=#0000FF>http://www.datasheetarchive.com/</font><br /><font color=#0000FF>http://www.tiking.com/</font></font><br /><font color=#FF0080><br /></font><br /><img src="https://bbs.21ic.com/upfiles/img/20071/200712922507136.gif"><br /><br />查到的BM代码有好几种,再根据提供的封装形式,象是SOT89,确定是<font color=#FF0080>BCX55-16</font><br /><br /><br /><font color=#FF0080>BCX55-16.pdf&nbsp;点这里下载→&nbsp;</font><a href="https://bbs.21ic.com/upfiles/img/20071/2007129211633723.pdf" target=_blank>https://bbs.21ic.com/upfiles/img/20071/2007129211633723.pdf</a><br /><br /><img src="https://bbs.21ic.com/upfiles/img/20071/2007129211744481.gif"><br /><img src="https://bbs.21ic.com/upfiles/img/20071/200712921185563.gif"><br /><br /><img src="https://bbs.21ic.com/upfiles/img/20071/2007129211830443.gif">