Many relays have a standard numbering system, especially if they are intended to be plugged into some form of holder. there are some variations, but generally they are two digit such as 11, 12, 13, 21, 22, 23 and so on, the coils are normally A1 and A2. I have also seen some bases with a letter and a number as well. The numbers refer to the poles and contacts, so 11 is pole 1 contact 1, 12 is pole 1 contact 2, 21 is pole 2 contact 1 and so on. I can't remember offhand which is the normally closed/open and common connections, I usually end up buzzing it out to be sure :-)
Miniature PCB mount relays tend to be a little more variable. As for footprint, well you use the footprint that matches the relay... (I cannot see one in the standard lib) I drew up a simple footprint the last time I used a relay. I've used this SPST 12V 10A directly soldered into the PCB http://www.rapidonline.com/searchresults.aspx?style=0&kw=60-4600 and the 60-4110 Double pole socket http://www.rapidonline.com/Electronic-Components/Relays-Solenoids/PCB-Relays/Miniature-relay-sockets/28667/kw/60-4110 I have simple footprints for both, if they are of any use you are welcome to a copy. Andy On Sat, 23 Jan 2010 01:09:33 -0800 (PST) yukku yukkoooooo <[email protected]> wrote: > Hi, > I am using the Relay RELAY_2RT from the EEschema "device" library. > I have a couple of question about it - > 1. Why does it not use contiguous pin numbers instead using pins 1,3,5 8,9 > and 12,14,16 ? > My guess is it uses a standard package with missing pins to get double > spacing. Please confirm. > 2. What foot print should I use for it in cvpcb ? > > Regards > yukku > > > >
