PCB Libraries Forum Homepage
Forum Home Forum Home > PCB Footprint Expert > Questions & Answers
  New Posts New Posts RSS Feed - TO254P1419X457-3_4 or TO508P1419X457-3
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

TO254P1419X457-3_4 or TO508P1419X457-3

 Post Reply Post Reply
Author
Message
jameshead View Drop Down
Expert User
Expert User
Avatar

Joined: 20 Mar 2012
Location: Oxfordshire, UK
Status: Offline
Points: 576
Post Options Post Options   Thanks (0) Thanks(0)   Quote jameshead Quote  Post ReplyReply Direct Link To This Post Topic: TO254P1419X457-3_4 or TO508P1419X457-3
    Posted: 05 Dec 2012 at 6:59am
I wondered generally how people treat a DPAK where pin 2 has been cut off such as:

http://www.onsemi.com/pub_link/Collateral/936-03.PDF

Do you enter it as:

TO254P1419X457-3_4

or

TO508P1419X457-3

?

I've been using TO254P1419X457-3_4 since I'm looking for the pitch of 2.54mm which is what the dimensioned drawing shows.
Back to Top
Back to Top
Tom H View Drop Down
Admin Group
Admin Group
Avatar

Joined: 05 Jan 2012
Location: San Diego, CA
Status: Offline
Points: 5717
Post Options Post Options   Thanks (1) Thanks(1)   Quote Tom H Quote  Post ReplyReply Direct Link To This Post Posted: 05 Dec 2012 at 7:10am
If you "Hide" pin 2 then the Pin Qty in the Footprint Name would be -3_4
The last pin number in the final footprint will always appear last.
So when you "Hide" Pin-2 you have a 3-Pin package and Pin-4 is the last Pin number.
 
If you "Delete" pin 2 then the Pin Qty in the Footprint Name would be -4_3
This means you have 3-Pins in a 4-pin package and Pin-3 is the last Pin number.
 
Back to Top
jameshead View Drop Down
Expert User
Expert User
Avatar

Joined: 20 Mar 2012
Location: Oxfordshire, UK
Status: Offline
Points: 576
Post Options Post Options   Thanks (0) Thanks(0)   Quote jameshead Quote  Post ReplyReply Direct Link To This Post Posted: 05 Dec 2012 at 7:17am
Okay, thanks.

I'd only ever want to use the remove.
Back to Top
 Post Reply Post Reply

Forum Jump Forum Permissions View Drop Down



This page was generated in 0.266 seconds.