Sugar Posted March 9, 2004 Report Share Posted March 9, 2004 hi guys... im a newbie and im so confused by this.. pls help.. if an IC has 16 pins.. and only 4 pins are needed... does this mean that the 12 ramaining pins are useless?... and all i could do about them is give them a hole?i meant... putting an IC on a pcb that has 16 pins.. and only 4 is needed... what will i do for the remaining 12 pins?.. should i still make a hole for them with a ground on their own?.. or just a hole without any grounds.... THANX! Quote Link to comment Share on other sites More sharing options...
mixos Posted March 9, 2004 Report Share Posted March 9, 2004 You just put them in isolated from the rest of the circuit pcb holes to stabilize the IC over the PCB. Nothing more - nothing less.Also you can cut this pins and make no holes for them.What IC is this? Quote Link to comment Share on other sites More sharing options...
Sugar Posted March 10, 2004 Author Report Share Posted March 10, 2004 its an 8030 sound IC for touch sensitive alarm... :) :)...... thanx for the reply.. :) Quote Link to comment Share on other sites More sharing options...
billy Posted March 10, 2004 Report Share Posted March 10, 2004 Yes, just drill the holes and leave the pads unrouted... Quote Link to comment Share on other sites More sharing options...
MP Posted March 14, 2004 Report Share Posted March 14, 2004 For some time I was making sure that I had the 4 corner pins for anchors and I left the other unneeded pads off my drawing as they were not needed. However, later I found that this was confusing to others as to which IC was there and left me the problem of making special parts drawings in the cad programs I used later on. Finally, I just left the package as is, drilled the holes and simply did not route the pads to anything as Billy has mentioned. Sometimes we make more work for ourselves in trying to eliminate some work.MP Quote Link to comment Share on other sites More sharing options...
login
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.