PCB Libraries Forum Homepage
Forum Home Forum Home > PCB Footprint Expert > Questions & Answers
  New Posts New Posts RSS Feed - Pad to Slot Ratio
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Pad to Slot Ratio

 Post Reply Post Reply
Author
Message
Batiskaff View Drop Down
Advanced User
Advanced User


Joined: 30 Apr 2018
Status: Offline
Points: 65
Post Options Post Options   Thanks (0) Thanks(0)   Quote Batiskaff Quote  Post ReplyReply Direct Link To This Post Topic: Pad to Slot Ratio
    Posted: 31 Oct 2018 at 4:09am
What mean "Pad to Slot Ratio" from Through Hole - Terminal - Settings. Where it used?
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: 5719
Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom H Quote  Post ReplyReply Direct Link To This Post Posted: 31 Oct 2018 at 7:26am
The Pad to Hole ratio is set to 1.5. This means the pad size is 1.5 times bigger than the hole size. 

Example: if the Hole Size is 1.00 the Pad Size is 1.50 or 0.25 annular ring. If the hole size is 2.00 the pad size will be 3.00 or 0.50 annular ring. 

The same theory is used for Slotted Holes but with a 1.75 multiplier. This is because the slotted hole drilling process of drill and drag. The annular ring needs to be more robust. 

However, all these values can be edited by the user to be whatever you think is best. The default values are our best option but all Preference values are user definable for you to customize your personal PCB library. 

Stay connected - follow us! X - LinkedIn
Back to Top
Batiskaff View Drop Down
Advanced User
Advanced User


Joined: 30 Apr 2018
Status: Offline
Points: 65
Post Options Post Options   Thanks (0) Thanks(0)   Quote Batiskaff Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov 2018 at 2:09am
Slotted Holes are in Mounting Hole only, or are another families with ones?
Back to Top
Tom H View Drop Down
Admin Group
Admin Group
Avatar

Joined: 05 Jan 2012
Location: San Diego, CA
Status: Offline
Points: 5719
Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom H Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov 2018 at 7:39am
Slotted holes are mostly used in the Foot Print (FP) Designer program in Library Expert. 

Mostly in connectors and the slots can be offset from the pad too. 

Stay connected - follow us! X - LinkedIn
Back to Top
 Post Reply Post Reply

Forum Jump Forum Permissions View Drop Down



This page was generated in 0.219 seconds.