Sender: |
|
Subject: |
|
From: |
|
Date: |
Thu, 28 Oct 1999 17:27:50 -0400 |
X-To: |
|
Reply-To: |
|
Parts/Attachments: |
|
|
By my calculations you need 580 sq. mil of copper to carry 25 amps
continuous with a 30 degree C temperature rise. Being conservative, that
means you need an external trace of 480 mils wide in 1 ounce copper, and 250
mils wide in 2 ounce copper. I would add a safety factor (1.25-1.5x) to
these sizes before using them at that high of current though.
Jeffrey A. McGlaughlin
PCB Designer
Battelle Memorial Institute
Columbus Ohio
[log in to unmask]
-----Original Message-----
From: Anne Ledger [SMTP:[log in to unmask]]
Sent: Thursday, 28 October, 1999 16:50
To: [log in to unmask]
Subject: [TN] Copper thickness for 25 amps
Good Afternoon Technet,
Does anyone know how thick a trace is required to carry 25 amps in 1
oz
copper? How about 2 oz copper? Let's assume it's .062 thick
material.
Need help ASAP. Thanks in advance.
Anne Ledger
EMDS, Inc.
[log in to unmask]
##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV
1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with
following text in
the body:
To subscribe: SUBSCRIBE TECHNET <your full name>
To unsubscribe: SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
additional
information.
If you need assistance - contact Gayatri Sardeshpande at
[log in to unmask] or
847-509-9700 ext.5365
##############################################################
##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe: SUBSCRIBE TECHNET <your full name>
To unsubscribe: SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
847-509-9700 ext.5365
##############################################################
|
|
|