[SI-LIST] Re: how to calculate maximum current that can be provided by one via
- From: Tayyab Jamil <tayyab@xxxxxxxxxxxxxx>
- To: peter_pang@xxxxxxxxxxxxxxxx
- Date: Tue, 4 May 2004 16:48:17 +0500
hello,
In my opinion based on a paper titled current carrying capacity of a via, 12
mil hole sized via can hold current as much as of 36 mil vide trace of same
copper thickness as the plating of via hole.
As far as 36mA is concerned.... I doubt any practicall and possible
manufcatruing technique used now a days can produce such a small via which
can't hold this much current.
Tayyab
-----Original Message-----
From: Pang Ning(Peter) [mailto:peter_pang@xxxxxxxxxxxxxxxx]
Sent: Thursday, April 29, 2004 7:51 AM
To: si-list@xxxxxxxxxxxxx
Cc: Tang Lan(Stella); Zhang Zhengmei(Linda)
Subject: [SI-LIST] how to calculate maximum current that can be provided
by one via
Dear Experts,
I have a question about how to calculate maximum current that can be
provided by one via. In my layout, oscillator's GND pin only have one
via to GND plane. From oscillator datasheet, it says the component needs
about 36mA current. So I worry about current capacity of the GND via.
The via that I used is 12mil hole diameter and 24mil pad. It's difficuit
to add two vias in layout due to limited PCB space. Does any body can
tell me how big current can be provided by one 12mil-24mil via ? Thanks
a lot!
Best regards,
Peter Pang
XGI Technology (Shanghai) Inc.
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