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Update/fix Finder 40 series relays

Originally, this was supposed to be a simple graphical harmonisation following the excellent Omron G6A series, but I found a few issues (and one very serious one, but in an obsolete part!)

Note, in all these datasheet drawings, it's a bottom view! This will be important.

Finder have changes some things in more recent datasheet revs, and the 40.11 and 40.41 models are no longer included. An archive.org archived version from 2017 has been used in the description for those parts. A copy is here:

finder-relais-serie-40.pdf

Changed parts (no additions):

  • Finder 40.52
  • Finder 40.51
  • Finder 40.41
  • Finder 40.31
  • Finder 40.11

Changes to all parts:

  • use new silkscreen style (filled arrow at coil/orientation mark end) - not all have a mark, but these relays cannot be physically fitted backwards anyway
  • adjust chamfers to be 45degrees
  • adjust silkscreen outsets to just touch fab layer
  • reduce pad sizes slightly from 3mm pad/1.5mm hole to 2.8mm pad/1.5mm hole. There are not especially heavy relays, and that's still 0.65mm annular rings.
  • rounded rects on pin 1
  • add sizes and capacities to the descriptions.

40.52

Changes:

  • modify width to 12.4 (was 12.5)
  • fix the pin 1-to-edge distance (was 3) - Finder have changed this in the DS!

image.png

Old DS:

image.png

Screenshot_20240502_212332.png

40.51

Same changes as 40.52, but it's an SPDT with only 3 pins:

  • modify width to 12.4 (was 12.5)
  • fix the pin 1-to-edge distance (was 3) - Finder have changed this in the DS!

Screenshot_20240502_212338.pngimage.png

40.31

  • modify width to 12.4 (was 12.5)

  • fix the pin 1-to-edge distance (was 3) - Finder have changed this in the DS!

    image.png

Screenshot_20240502_212349.png

40.11

This part is obsolete and has been removed from the 40-series DS.

But it was flipped - the drawing is a bottom view! Photos agree:

image.png image.png image.png

40.41

Also discontinued.

The (old) DS has an irreconcilable problem: 3 + 20 + 6 doesn't add up to 28.5. So I assumed the it could be 29mm body, not 28.5 to be on the safe side, since there is no updated DS.

Screenshot_20240502_212357.png image.png

Edited by John Beard

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