https://au.mouser.com/datasheet/2/54/mov10d-777448.pdfOn the 2nd page, dimensions are given that only have one variable depending on the particular part number and that is the width of the body
Front view shows distance between pins as 7.5mm but the side view shows these pins are offset by some undocumented amount, sure you can make assumptions, but they are not documented.
Further on in the document there are various dimensions of the part mounted on tape and part of that shows the pins flat against the tape but again, there is no dimension. This would seem to indicated the MOV body would not be parallel with the tape.
Basic geometry and the pins 'offsettednes' would seem to indicate that the actual straight line distance between pins will not be 7.5mm but some distance slightly longer.
I managed to find a Bourns step file of the MOV I'm interested in and it shows this discrepancy. Measuring the 3D model shows the pins offset by 1mm giving a straight line distance between pins of 7.566mm
I am either missing something in the data sheet or the tolerance they are giving for the front view pin spacing of 7.5 +/- 0.8 is how they are getting around it as 7.566 falls within that tolerance.
Thing is if you wanted the part to fit in without bending the leads and saying the pad size for a 0.8mm pin is the same my calcs show you would need a hole size of 2.4mm!
I realise I'm being pedantic especially as I will hand mount these devices, just curious what others have to say