Re: PCB trace temperature?

From: Gary Pace (xxx_at_yyy.com)
Date: 12/17/04

  • Next message: Calvin Chan: "Re: standalone programmer for PIC?" 
    Date: Fri, 17 Dec 2004 01:18:58 GMT

    100C on FR4 with good bonding between the copper and substrate. This will
    probably discolour the board over a couple of years. 80C if you're being
    conservative.

    Much hotter on expensive substrates etc.

    "Dennis Clark" <dlc@io.frii.com> wrote in message
    news:41c205d3$0$207$75868355@news.frii.net...
    > Hi all,
    >
    > I've seen and used the trace temperature vs. current calculators and
    > seen lots of information on calculating trace temps. However, I can't
    > find any information about just how hot you can let a trace get. I
    > know that copper melts at about 1100 deg. C, I'm pretty sure that the
    > board will be damaged before that,... So, how hot can a trace get and
    > still be OK on a board? Where does board damage occur and how hot are
    > we "allowed" to get a trace?
    >
    > regards,
    > DLC
    > --
    > ============================================================================
    > * Dennis Clark dlc@frii.com www.techtoystoday.com
    > *
    > * "Programming and Customizing the OOPic Microcontroller" Mcgraw-Hill 2003
    > *
    > ============================================================================

  • Next message: Calvin Chan: "Re: standalone programmer for PIC?"

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