### Re: [PEDA] Copper Calculations

This unit 'ounces of copper', does it apply to 1)square foot ? 2)square yard ? 3)square meter ? European thicknesses are 35, 70, 105, 150, 200 and 300 micrometer. I just wondered how they relate. One ounce is 28 grams, isn't it ? Rene Stephen Smith wrote: Does anyone know a simple way of

### Re: [PEDA] Copper Calculations

### Re: [PEDA] Copper Calculations

At 09:04 PM 11/19/01 +0100, you wrote: This unit 'ounces of copper', does it apply to 1)square foot ? 2)square yard ? 3)square meter ? square foot. European thicknesses are 35, 70, 105, 150, 200 and 300 micrometer. I just wondered how they relate. One ounce of copper is about 1.4 mils thick.

### Re: [PEDA] Copper Calculations

- From: Rene Tschaggelar [mailto:[EMAIL PROTECTED]] Sent: Monday, November 19, 2001 12:05 PM To: Protel EDA Forum Subject: Re: [PEDA] Copper Calculations This unit 'ounces of copper', does it apply to 1)square foot ? 2)square yard ? 3)square meter ? European thicknesses are 35, 70, 105, 150, 200

### Re: [PEDA] Copper Calculations

Rene Tschaggelar wrote: This unit 'ounces of copper', does it apply to 1)square foot ? 2)square yard ? 3)square meter ? It is ounces Avoirdupois per square foot, and is about .0014 thick, which should equal about 55 uM, if I did the conversion right. Jon * * * * * * * * * * * * * * * * *

### Re: [PEDA] Copper Calculations

Smith Optical Crossing Inc. [EMAIL PROTECTED] -Original Message- From: Stephen Smith [mailto:[EMAIL PROTECTED]] Sent: Friday, November 16, 2001 6:07 AM To: Protel EDA Forum (E-mail) Subject: [PEDA] Copper Calculations Does anyone know a simple way of calculating copper track size (in, mm

### Re: [PEDA] Copper Calculations

### [PEDA] Copper Calculations

Does anyone know a simple way of calculating copper track size (in, mm), when you know the amount of copper (in, ounces), and the current flow (in, Amps)?? I've never had to do any high current circuits before, so any help much appreciated. Steve * * * * * * * * * * * * * * * * * * * * * * * *

### Re: [PEDA] Copper Calculations

Forum (E-mail) Subject: [PEDA] Copper Calculations Does anyone know a simple way of calculating copper track size (in, mm), when you know the amount of copper (in, ounces), and the current flow (in, Amps)?? I've never had to do any high current circuits before, so any help much appreciated. Steve

### Re: [PEDA] Copper Calculations

That's very helpful, thanks. But, one more thingWho is Chris Robertson? Steve -Original Message- From: Ted Tontis [mailto:[EMAIL PROTECTED]] Sent: 16 November 2001 15:06 To: 'Protel EDA Forum' Subject: Re: [PEDA] Copper Calculations Minimum Conductor Widths For PCBs

### Re: [PEDA] Copper Calculations

he writes articles for PCD magazine. Here is there web sight www.pcdmag.com very helpful. Ted -Original Message- From: Stephen Smith [mailto:[EMAIL PROTECTED]] Sent: Friday, November 16, 2001 9:05 AM To: Protel EDA Forum Subject: Re: [PEDA] Copper Calculations That's very helpful

### Re: [PEDA] Copper Calculations

Try Pcbtemp.exe at Utracad design its free and very usefull. www.ultracad.com/calc.htm -Original Message- From: Stephen Smith [mailto:[EMAIL PROTECTED]] Sent: Friday, November 16, 2001 9:07 AM To: Protel EDA Forum (E-mail) Subject: [PEDA] Copper Calculations Does anyone know a simple

### Re: [PEDA] Copper Calculations

Ted Tontis wrote: Minimum Conductor Widths For PCBs Temperature Rise Above Ambient For 1/2 oz Copper Amperage Ambient Temperature Conductor Width 1 AMP 45C (113F) .013 1.5 AMP 45C (113F) .025 2 AMP 45C (113F) .033 3 AMP 45C (113F) .050 4 AMP 45C (113F) .073 5 AMP 45C (113F) .110 6 AMP

### Re: [PEDA] Copper Calculations

Useful information on copper and temperature calculations can be found at http://www.aracnet.com/cgi-usr/gpatrick/ Trace Width Calculator at http://www.aracnet.com/cgi-usr/gpatrick/trace.pl and references and formula at http://www.aracnet.com/~gpatrick/trace_ref.html I think there are some