Why do we generally try to avoid 90 degree turns while designing PCB?

Home Forums PCB Designing and Manufacturing Why do we generally try to avoid 90 degree turns while designing PCB?

This topic contains 4 replies, has 4 voices, and was last updated by  anishpsla 2 years, 5 months ago.

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  • #7377

    achumol
    Participant

    Why do we generally try to avoid 90 degree turns while designing PCB?

    #7395

    Ligo George
    Keymaster

    We generally try to avoid 90 degree and acute angle turns while pcb designing to avoid acid trap and reflections that may caused with high frequency signals.
    For high frequency signals 90 degree turns acts as a capacitive load, which reflects signals and results in poor impedance matching… Even in low frequency signals these sharp angles may cause acid traps especially for narrow tracks.
    Acid trap occurs on every PCBs especially for high density PCBs in which chemicals or etchants may get trapped in corners and reduces the width of track or may create short circuits.

    #10479

    abhee
    Participant

    Dear Geroge. Did you have any complete guide on pcb designing using computer software like proteus , circuit wizard etc……i need it for complete description

     

    #10482

    Ligo George
    Keymaster

    Sorry we haven’t it yet.

    #10711

    anishpsla
    Participant

    Design spark PCB is a good CAD software with tons of libraries (online activation needed). Also regular updates are available. The project is supported by RS Components.

    More details at http://tyni.in/XPrWBxa

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