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Add Kemet Ex2 Series Mechanical Relays

Ed Peguillan III requested to merge github/fork/yankee14/kemet_Ex2_series_mechanical_relays into master

This PR adds a family of DPDT relays from Kemet. They differ by package type, size, functionality, and coil voltage.

Datasheet: https://content.kemet.com/datasheets/KEM_R7002_EC2_EE2.pdf

Symbol PR: https://github.com/KiCad/kicad-symbols/pull/2631 Footprint PR: https://github.com/KiCad/kicad-footprints/pull/2230 Packages3D-source PR: https://github.com/KiCad/kicad-packages3D-source/pull/280

  • 2 general package types
    • DIP --> PN beginning with EC2
    • SMD --> PN beginning with EE2
  • 3 or 5 different coil voltages, these make up the symbol aliases
    • 3V, available on all variants
    • 4.5V, available on all variants
      • I don't like decimal point in part name, should replace with underscore? Or maybe 4V5?
    • 5V, available on all variants except NKX
    • 12V, available on all variants
    • 24V, available on all variants except NKX
  • 3 different functional variants, these must make up separate symbols since the symbol artwork will differ
    • Non-latch type --> No letter after coil voltage
    • Single coil latch type --> S after coil voltage
    • Double coil latch type --> T after coil voltage
  • 4 different general footprints, length and width differ depending on relay lead type
    • THT for non-latch and single coil type
    • THT for double coil latch type
    • SMD for non-latch and single coil type
    • SMD for double coil latch type
  • 4 different lead types, each of these types have unique footprint
    • Standard --> NU after latching type
    • High density footprint --> NUH after latching type
    • High solder retention --> NUX after latching type
    • High solder retention and high breakdown voltage --> NKX after latching type

Screencap of non-latching and single coil latching, standard lead, THT: Relay_DPDT_Kemet_EC2

Screencap of double coil latching, standard lead, THT: Relay_DPDT_Kemet_EC2_Double-Coil

Screencap of non-latching and single coil latching, standard lead, SMD: Relay_DPDT_Kemet_EE2_NU

Screencap of double coil latching, standard lead, SMD: Relay_DPDT_Kemet_EE2_NU_Double-Coil

Screencap of non-latching and single coil latching, high density, SMD: Relay_DPDT_Kemet_EE2_NUH

Screencap of double coil latching, high density, SMD: Relay_DPDT_Kemet_EE2_NUH_Double-Coil

Screencap of non-latching and single coil latching, high solder joint reliability and/or high breakdown voltage, SMD: Relay_DPDT_Kemet_EE2_NUX_NKX

Screencap of double coil latching, high solder joint reliability, SMD: Relay_DPDT_Kemet_EE2_NUX_Double-Coil

  • Provide a URL to a datasheet for the footprint(s) you are contributing
  • An example screenshot image is very helpful
  • If there are matching symbol or 3D model pull requests, provide link(s) as appropriate
  • Check the output of the Travis automated check scripts - fix any errors as required
  • Give a reason behind any intentional library convention rule violation.

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