I need a symbol that is a U-type for a generic 16 pin DIP package. No pin names just numbers but categorized as a device (U) not a connector (J). I don’t have the matching symbol for the actual device I am using (DC-DC converter) so a generic symbol would work fine for me. I have the footprint for the actual device.
My problem seems common so I expected to find a generic “16 pin DIP symbol” that is not a socket/connector type. Is there such a device or am I solving the problem the wrong way? Thanks Al (San Francisco area)
Just make a symbol that’s a rectangular box and add pins to suit. If less than 16 then less work. The symbol doesn’t have to resemble the package so it’s irrelevant that it’s in a DIP package.
It’s possible there are power converter symbols in the library you can modify but it may be slower to do that compared to making your own, which is a useful skill.
Edit: There are some Converter DC-DC symbols in the library. You could modify one of those to suit. There are actually only a few distinct base symbols; most of them are derivatives of a base symbol.
Label the pins after their position in the footprint. For example if only the corner pins are used, they would be 1, 8, 9, and 16, i.e. gaps are ok. Then it will match up with a generic DIP-16 footprint.
Perhaps use, but re-name a DIP 16 symbol from either the 4xxx or 74xx series ICs?
Eg. 4046
You may then open the symbol you choose in the Symbol Editor and move and re-name the pins to your convenience and drag the overall rectangle to a more suitable size.
If you wish to re-use your created symbol at a later date, you will need to save it in a Personal Library.
I saved an eight pin generic connector to a personal library (see LH symbol).
Re-named it.
Duplicated it.
Mirrored the duplicate.
Removed a rectangle.
Extended the other rectangle.
Changed the pin numbers to suit. Could have named them if I wanted.
Saved.
Thanks, all good ideas. I ended up making my own symbol from scratch. Was easier than I imagined. I was so convinced that my problem was universal I went down a hole looking for the symbol. Waste of my time. Done!
Creating a simple 16 pin schematic symbol is pretty much like:
Create a new empty symbol, and make sure it is in a library.
Place one pin Set it’s pin properties to something usable (“passive” is the most permissive)
Depress [Ins] for a while, until you have at least 16 pins.
Use block move, rotate and mirror to get the pins where you want them.
Delete the excessive pins.
Draw a rectangle in between the pins. Use “Fill with body background color” to get the yellow inside the rectangle.
Save & exit.
If you want to modify a lot of pin properties later, use: Symbol Editor / Edit / Pin Table. You can use Copy / Paste in the pin table to copy fields of one pin to many others.
You write it for third time but I can’t imagine anyone (including you) whenever could need such symbol telling you nothing about pin functionality making schematic harder to read.
You write that it is DC-DC converter so why you don’t want to have at schematic the power input on the left GND and bottom and power output and feedback on the right?
Check that you have assigned suitable electrical types to the pins for ERC purposes. You can double check against an existing Converter DC-DC symbol.