I like to use 35-36mil holes with 60-65mil pads. I just realized I
haven't been following that rule to closely, but the bigger hole/pad
makes it easier to solder. I have those sizes on most resistor,
capacitor, diode, and DIP IC footprint. I'm fixing the footprints I
have that don't use this size. I don't know if it's a standard size but
it has been reccomended to me by a few different people now.
note that some parts like 1n4001 diodes, tempco resistors, or ferrite
beads need bigger holes, I'm using 47mil hole and 78mil pad for those.
this size is good for wire solder points also, but maybe add a little to
the pad size.
for power connectors, the 0.156" spaced headers I use 68mil holes and
115mil pads.
I use 152mil hole and 245mil pad for mounting holes that fit #6-32
machine screws.
I took me a few tries at making boards before I was happy with the sizes
-Ryan Williams
mmm_94117 wrote:
haven't been following that rule to closely, but the bigger hole/pad
makes it easier to solder. I have those sizes on most resistor,
capacitor, diode, and DIP IC footprint. I'm fixing the footprints I
have that don't use this size. I don't know if it's a standard size but
it has been reccomended to me by a few different people now.
note that some parts like 1n4001 diodes, tempco resistors, or ferrite
beads need bigger holes, I'm using 47mil hole and 78mil pad for those.
this size is good for wire solder points also, but maybe add a little to
the pad size.
for power connectors, the 0.156" spaced headers I use 68mil holes and
115mil pads.
I use 152mil hole and 245mil pad for mounting holes that fit #6-32
machine screws.
I took me a few tries at making boards before I was happy with the sizes
-Ryan Williams
mmm_94117 wrote:
> Thanks for the reply. Let me pick our collective brains a little more.
>
> I am working on my layout. What size holes should I spec for typical
> leaded parts? Is there a standard size? What pad size is good for the
> same?