 
| Subject: | |
| From: | |
| Reply To: | TechNet E-Mail Forum. |
| Date: | Tue, 31 Aug 1999 23:11:38 -0400 |
| Content-Type: | text/plain |
| Parts/Attachments: |
|
|
Ken
The rule of thumb is a .001" etch factor for 1 oz. and .0005" for
.5 oz. copper. That is to say .0005" per edge of trace on . 1 oz and
.00025 per edge on the .5 oz..
Hope this helps.
Mike Doty
Hadco TCE
______________________________ Reply Separator _________________________________
Subject: [TN] Trace width & etch compensation factor
Author: Ken Patel <[log in to unmask]> at smtplink-hadco
Date: 8/31/99 6:44 PM
What is the widely used etch compensation factor provided on 1 oz copper and
.5 oz copper on a 4 mil trace? I mean how much more 4 mil line will be
beefed up by fab house before etching so that at the end he or she will get
required 4 mil trace width.
re,
ken patel
______________________________________________________
Ken Patel Phone: (408) 490-6804
1708 McCarthy Blvd. Fax: (408) 490-6859
Milpitas, CA 95035 Beeper: (888) 769-1808
##############################################################
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
##############################################################
|
|
|
