Author Topic: PT24E DIP switch: non-standard dimensions  (Read 2354 times)

Rick314

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PT24E DIP switch: non-standard dimensions
« on: November 14, 2011, 03:22:16 PM »
A caution for those adding the user-provided 8 section DIP switch to their PT24E boards -- The PT24E-ASM schematic (http://www.modtronix.com/products/pt32e/pt24er1.pdf) shows an "8 Way DIP Switch".  I think Dual Inline Package (DIP) implies a 0.3 inch spacing between the two rows of switch pins.  But the PT24E-ASM board provides 3 rows of pins, each separated by 0.1 inches, so the outer 2 rows are only 0.2 inches apart.  I mounted my switch, a Digi-Key part number CT1958MST-ND as shown in the picture, by wrapping one row of pins around the outside of the board and soldering them flush to the pads on the underside of the board.

If there are 8 section DIP switches with 0.2 inches between the two pin rows available somewhere, please post a reply so others can purchase a better solution than I have.