From: Bob Blick <bobblick@outlook.com>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
Sender: "piclist-bounces@mit.edu" <piclist-bounces@mit.edu>
Date: Wed, 3 Feb 2021 11:59:23 -0800
Subject: Re: [EE] Measuring PCB copper weight?
Thread-Topic: [EE] Measuring PCB copper weight?
Thread-Index: AQHW+kcpYMqqf6m3CEmpgDaFXIdb+apG2T8H
Message-ID:
 <BYAPR02MB4055BAEDC8A2065466BDE7F8DCB49@BYAPR02MB4055.namprd02.prod.outlook.com>
References: <601AC838.5040808@narwani.org>
In-Reply-To: <601AC838.5040808@narwani.org>
Reply-To: Microcontroller discussion list - Public. <piclist@mit.edu>
Accept-Language: en-US
Content-Language: en-US
X-MS-Exchange-Organization-SenderIdResult: Pass
X-MS-Exchange-Organization-PRD: mit.edu
X-MS-TNEF-Correlator:
acceptlanguage: en-US
received-spf: Pass (protection.outlook.com: domain of outlook.com designates
	40.92.22.107 as permitted sender) receiver=protection.outlook.com;
	client-ip=40.92.22.107;	helo=NAM12-DM6-obe.outbound.protection.outlook.com; 
dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=outlook.com;
	s=selector1;
	h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;
	bh=6qoZ3XIyaXJdVlfu92QCzUvV2n9VYBkDAQKKhtN6Z4E=;
	b=SzsgEf9HGysY75C8AtAkDkbfeO3poRBKjfkXOGGmtDWn8ws0lpwfKIYNd1IqbgK8NwTJm9F2Db1Qy+Lw7tPwzh9DWY/sR7PhFGGlrlDU+MKch4qElKPQxN51Zb96HyBl85sw/TXZbFmNb4+oyDvK1M3CtB4oQkKgNjLUqmxISB97oaiDYyqPQAiWtyhbMcS3Fht+wRSvLUP5ILjS0Flg9wI8++Abg1wXhO7HvCsGWpAIg/jvlNebq37kAVxiHWka4reQBsDKcFLSBztXvW29dOj56PT3VhgQK6qpygnxVi891lAAc6Iyx67NqctmLgCM9QWI7WGCyraKppEkteJ0Uw==
authentication-results: spf=pass (sender IP is 40.92.22.107)
	smtp.mailfrom=outlook.com; mit.edu; dkim=pass (signature was verified)
	header.d=outlook.com; mit.edu;	dmarc=pass action=none
 header.from=outlook.com; 
errors-to: piclist-bounces@mit.edu
list-id: "Microcontroller discussion list - Public." <piclist.mit.edu>
list-post: <mailto:piclist@mit.edu>
x-beenthere: piclist@mit.edu
x-mailman-version: 2.1.6
x-topics: [EE]
x-mime-autoconverted: from quoted-printable to 8bit by PCH.mit.edu id
	113JxZNe032613
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0

Peel off a trace and do the same to a PC board with known copper, and compa=
re.

Friendly regards, Bob

________________________________________
From: piclist-bounces@mit.edu <piclist-bounces@mit.edu> on behalf of Neil=20
Sent: Wednesday, February 3, 2021 7:58 AM
To: Microcontroller discussion list - Public.
Subject: [EE] Measuring PCB copper weight?

Is there a simplish way to figure out or measure the copper weight on an
existing PCB?

I'm asking because I'm redoing a layout for someone and I did not do the
original circuit design, so was planning to use the same trace widths as
on the original board, but I'll need to know the copper weight to order
a prototype board.
If I have to redo the math on current etc, that opens up another can of
worms as I don't have all of the specs otherwise.
And the copper does feel thicker than usual.

Thanks.



--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.