标题: ?????????????????? [打印本页]

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作者: dancruiser    时间: 2006-11-7 16:23     标题: ??????????????????

?????÷?????ó?????à??°????¨????20??????????????×÷?????????±?ù???á?????÷??×??ó???????à?????¨??????????±???12V??3.3V??
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???????????????è??30A?¨1.1V???????????÷????????????×÷??????????·???????
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作者: zing    时间: 2006-11-7 17:51

??????????1??pin,??????????·????¨???????????¤???????í????????thermal?????????è??????????

×???????????±ê×???±í??????1mm?í????????×?1A???÷??????VIA°??????¤?????????????????¤?????????????????????????????è???à??VIA,?à?í????

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作者: dancruiser    时间: 2006-11-8 11:04     标题: ????

???????ó???ú??×?????PCB?ú?ú?§???????????à??°??¨20????????????×??????????à????????????°?????????????3OZ?????ù????????????100mil???í??×??ó?¨?????÷??????4.5A??

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作者: zing    时间: 2006-11-9 14:19

???ù???°?????à??????????×??????????í????×???°??????×????????????????????·¨?ò????
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作者: zing    时间: 2006-11-9 14:22

?í??????????????×??????????????¤??????????????????×è?????ó?????à???????????¤???????????¤?????÷??????°????????×?ó????????????

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作者: zing    时间: 2006-11-10 21:08

http://www.kwupcb.com/news1.asp?id=48
05?ê11??19?????????????ú20°???????????.????????????????PCB

05?ê11??19???????????????ú??????????????????????????Tg???¨????×è????????°??????·°??????ú×????ó???§?????????????·°????è?ó?ì?¨?????????ú?ú?ù????
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???????????????é?????????????????°???ì????·?????????
?é????????.4.1 +/- 0.1
Tg:257??
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???????????·°?:
???????ó???????÷??????????????20°????¨700um??
??Tg???¨???·°?:
?????±?????????¨????????????Tg?????ò????????????????
Tg:150-152-162
?é????????er 2.8 +/- 0.05
          er10.5+/-0.5
          er6.15+/-0.15
          er3.0+/-0.05
          er3.2+/-0.05
www.kwupcb.com



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