Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Copper thickness in a PCB

Status
Not open for further replies.

Sakr

Member level 2
Joined
Jul 9, 2005
Messages
43
Helped
11
Reputation
22
Reaction score
5
Trophy points
1,288
Location
Cairo, Egypt
Activity points
1,533
pcb copper thickness in microns

Hi all,

I am new in the field of PCB design, and there are many things I want to know
for example

When stating the Copper thikness, why we use oz. (it is a unit of mass, as I know)?
I can't understand this point if I said I need 1 oz. Cu the thickness will depend on the width to preserve a constant mass (1 oz.)!!!!!

why we don't just use mm? are there historical reasons, or some thing like that?!!!!

Regards,
Sakr
 

In the PCB terminology 1 Oz copper is 35 Microns, 2 Oz is 70 Microns and so on
 

    Sakr

    Points: 2
    Helpful Answer Positive Rating
The ounce term comes from the ounces of copper to plate one square foot. It is a "plating weight", not a weight for each trace or fill.

As far as a board designer is concerned, you can use the accepted thicknesses for your impedance or current calculations - 1.4mil (35micron)=1oz Cu, 0.7mil (17.5micron)=1/2oz Cu, etc.
 

    Sakr

    Points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top