Rosebud:
     
     Refer to Figure 3-4 in IPC-D-275.
     
     We are currently having discussions as to why there is a big 
     discrepancy between IPC-D-275's (MIL-STD-275) and the NEC's direction 
     on how much current a copper conductor can carry.
     
     However, IPC-D-275 is an excellent design standard so definitely use 
     it.
     
     Regards,
     
     John Kretsch, P.E.
     Engineer, Design Assurance
     ADC Video Systems
     [log in to unmask]


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Subject: Unidentified subject!
Author:  [log in to unmask] at internet-mail
Date:    04/12/96 10:57


 As we are moving into higher power requirements for some of our =
products, I was hoping someone could help me with the trade offs of = 
plating FR4 at higher copper thicknesses. How much current can each oz = 
carry for various widths? Any assistance would be appreciated.       = 
-Rosebud