DIP chip footprint vs DIP socket footprint. PCB making problem ...

[redben]

Hi, I have a simple question:
Does socket for DIP package have the same mechanical properties as the chip itself ??
I have sockets lying around that I don't have the data sheet and I want to use them in my design.

If I use the standard DIP footprint of my chip, will the socket fit in that footprint ?
And my socket has rigid leads
I could print out on paper to try, but if someone has any infos it would be very very helpful.

Sorry for the english mistakes ...

[Alex Eisenhut]

Hi, I have a simple question:
Does socket for DIP package have the same mechanical properties as the chip itself ??
I have sockets lying around that I don't have the data sheet and I want to use them in my design.

If I use the standard DIP footprint of my chip, will the socket fit in that footprint ?
And my socket has rigid leads
I could print out on paper to try, but if someone has any infos it would be very very helpful.

Sorry for the english mistakes ...

If by properties you mean distances, yes, it should. You have Augat machined sockets?



Or longer leads? Then it's a wire-wrap socket. You can still solder to them, just clip off the extra length.

But are you making your own PCB? Then you don't have plated-through holes, so only use the bottom for connections, otherwise you have to solder on both sides of the board.

[westfw]

A DIP socket extends slightly beyond the holes, while a DIP package fits fully inside the hole pattern (except sometimes lengthwise.)  This shouldn't matter for most PCB designs, but it is possible to design a PCB for chips that won't work with sockets.

In the other direction, I've seen people put crystals and other components underneath a chip, where the sockets they are using happen to have empty space.  So you can also design a PCB that works with sockets, but not without.

[sleemanj]

Measure twice, make PCB once.

A set of digital calipers is very useful for the PCB designer to have on their desk, 10 seconds and you can accurately measure the thing to make sure.

[redben]

Thanks for all the answers, That helped me figure it out.
I finally made the effort to print it first on paper to make sure everything fits correctly enough.
After some trouble to print it 1:1 My conclusion is :
- it might be slightly too wide, but it still fit (I am talking 1/10 of a millimeter or there about).
Nothing to worry about.