fupingzuo 发表于 2008-8-8 13:40

IC器件开短路测试

各位业界大佬,有谁知道IC件的开短路测试方**主要测试各管脚对地/电源是否开短路和相邻管脚是否短路.有知道的,请赐教,多谢!

elnino1983 发表于 2008-8-15 10:24

如何测开短路

一般IC引脚都有钳位二极管，可以用万用表二极管档测量

enddy 发表于 2008-8-25 19:23

re

https://bbs.21ic.com/upfiles/img/200710/20071010193838946.jpg

enddy 发表于 2008-8-25 19:26

re

for&nbsp;picture1:<br /><br />Ground&nbsp;all&nbsp;pins&nbsp;(including&nbsp;VDD)<br />Program&nbsp;dynamic&nbsp;loads&nbsp;to&nbsp;+400uA&nbsp;at&nbsp;3V<br />Set&nbsp;VOL/VOH&nbsp;Z&nbsp;Mode&nbsp;(fail/pass/fail)<br />Run&nbsp;functional&nbsp;pattern&nbsp;(test&nbsp;one&nbsp;pin&nbsp;at&nbsp;a&nbsp;time)<br />Test&nbsp;for&nbsp;diode&nbsp;voltage<br />Fails&nbsp;if&nbsp;voltage&nbsp;is&nbsp;greater&nbsp;than&nbsp;1.5V<br />Fails&nbsp;if&nbsp;voltage&nbsp;is&nbsp;less&nbsp;than&nbsp;0.2V<br /><br /><br /><br />for&nbsp;picture2<br /><br />Ground&nbsp;all&nbsp;pins&nbsp;(including&nbsp;VDD)<br />Program&nbsp;dynamic&nbsp;loads&nbsp;to&nbsp;-400uA&nbsp;at&nbsp;-3V<br />Set&nbsp;VOL/VOH&nbsp;Z&nbsp;Mode&nbsp;(fail/pass/fail)<br />Run&nbsp;functional&nbsp;pattern&nbsp;(test&nbsp;all&nbsp;pins&nbsp;at&nbsp;once)<br />Test&nbsp;for&nbsp;diode&nbsp;voltage<br />Fails&nbsp;if&nbsp;voltage&nbsp;is&nbsp;more&nbsp;than&nbsp;-0.2V<br />Fails&nbsp;if&nbsp;voltage&nbsp;is&nbsp;less&nbsp;than&nbsp;-1.5V<br /><br /><br />this&nbsp;test&nbsp;method&nbsp;is&nbsp;from&nbsp;softtest.&nbsp;it&nbsp;is&nbsp;suit&nbsp;for&nbsp;IC&nbsp;test!https://bbs.21ic.com/upfiles/img/200710/20071010194016676.jpg

kingyou 发表于 2009-3-13 17:06

那要电源和电源之间短路呢???

那要电源和电源,电源和地之间短路又怎么测试呢.
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