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Multiple pins on top of each other

aricbeaver

Hi,


Capture will allow two pins to be on top of each other and will connect both pins in the netlist. Is it generally acceptable to do such a thing? Thisis for the following component: http://www.vishay.com/docs/30099/wsl3637.pdf

  • redwire

    Even though it works it's generally unacceptable practice.  Just move the pins to the next grid to the side (edit->symbol) and connect them back with a wire on the schematic.  You'll have the same netlist and a clean drawing.

  • aricbeaver
    Ok, thanks for the reply. I did hide the pin numbers and it looks like a normal clean resistor. A single resistor with 4 pins coming off it looks odd IMO.
  • redwire

    So...it depends but a signal connection should normally be shown on a schematic.  The connection you are attempting is known as Kelvin connection.  By hiding the pins you are hiding how it is connected.  Generally unacceptable.

  • aricbeaver

    I agree it should be shown if it were intended to be a Kelvin connection; however the suggested footprint in the datasheet for that resistor I believe is intended to center the resistor for assembly purposes not for a Kelvin lead connection which has to be implemented at a board level unless an "etch" component is inserted into the schematic separately from the resistor.

  • Wild

    Data sheet states it is a current sense 4 terminal resistor.

    So the schematic symbol should be a single resistor with four pins.   If you use 2 resistors, there will be 2 resistors in your BOM.

    So the footprint should have 4 pins, also and be created as a single part.

    BTW this common practice for current sensing.

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