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KiCad / kicad-footprints

Official KiCad Footprint Libraries for Kicad version 5
https://kicad.github.io/footprints
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Questions: Which pin is pin1 on a diode bridge rectifier? #224

Closed jkriege2 closed 6 years ago

jkriege2 commented 6 years ago

Hi!

I'm currently adding several diode bridges to the symbols, footpritns and 3D models. With the typical SIL-packages, I'm a bit stuck, as I'm not sure which pin to designate pin 1: 2018-01-05 08_52_59-b40c2300 pdf geschutzt - adobe acrobat reader dc Could you quickly state your preference?

For now I took the left pin, but currently I tend towards using the pin on the right, marked by the package bevel! This would also prevent us from the situation that pin1 is marked on the silkscreen, but the package has a mark at pin 4 ...

Best, JAN

SchrodingersGat commented 6 years ago

Can you provide a datasheet for one of these packages? I assume that these are not simply the "standard" SIP package?

jkriege2 commented 6 years ago

e.g. https://diotec.com/tl_files/diotec/files/pdf/datasheets/b40c700040.pdf

jkriege2 commented 6 years ago

or http://www.vishay.com/docs/88657/kbu6.pdf

pointhi commented 6 years ago

I would also tend to the body bevel on the right, because the datasheet doesn't specify a pin 1, and it's the visual noticable side where people normally assume pin 1 is located.

jkriege2 commented 6 years ago

OK! I think I'm going to rotate all packages as follows: 2018-01-05 14_08_30-3d viewer

SchrodingersGat commented 6 years ago

Agreed. One of the examples had a longer pin ok the right side also. Definitely should be pin 1

jkriege2 commented 6 years ago

OK, so I tagged the marked pin (package bevel or longer pin) as pin 1, but in the footprint put them on the left to fulfil KLC (pin 1 top-left).

I will add some more of these and post at some point in the next week I think!