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.

Register Log in

I need help regaring to the trace width of a 50 ohm trace

Status
Not open for further replies.
J

jack_pcb

Member level 3
Joined
Sep 2, 2008
Messages
56
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,288
Activity points
1,599
Impedence of trace

Hi all ,

I need help regaring to the trace width of a 50 ohm trace.
Board width is 1.2mm. Its 4 layer card with 2 power plane in inner layer.

Resistivity of copper foil = 1.750000
Permitivity of Prepreg 2125 = 4.500000
Permitivity of Fr4 = 4.500000

Kindly suggest me the trace width for 50 ohm trace . if possible please provide the calculator for it .


Thanks in advance
 

Re: Impedence of trace

4 layer board?

What layer is the ground plane? Are we talking about a microstrip trace, or something more exotic like coplanar waveguide (two strips on the surface, like a differential line)?

By power planes, do you mean big sheets of metal that are between your top layer trace and the bottom layer ground plane? If so, then you have what we call a "kluge", ie no specific impedance. Your high speed signals will look "interesting".


Rich
 
Last edited by a moderator:

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top