PCB Libraries Forum Homepage
Forum Home Forum Home > PCB Footprint Expert > Questions & Answers
  New Posts New Posts RSS Feed - Chip Caps and Resistor w/No Terminal Tolerance
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Chip Caps and Resistor w/No Terminal Tolerance
 Post Reply Post Reply
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
pcbfreedomcad View Drop Down
Active User
Active User


Joined: 09 Jan 2024
Status: Offline
Points: 17 		Post Options Post Options   Thanks (0) Thanks(0)   Quote pcbfreedomcad Quote  Post ReplyReply Direct Link To This Post Topic: Chip Caps and Resistor w/No Terminal Tolerance
    Posted: 4 hours 12 minutes ago at 5:14am
What is entered in the tool for L and L1, when there is no tolerance for lead length given in the datasheet? 

I am thinking of Chip Capacitor and Resistor terminal tolerances. 
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: 6028 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom H Quote  Post ReplyReply Direct Link To This Post Posted: 55 minutes ago at 8:31am
When L and L1 dimensions are the same, only enter L (don't enter duplicate dimensions). 

L1 is optional if it's different than L. 

I recommend that you open the free SM Discrete.fpx file and sort the Case Code Column. 

Then search for similar Case Codes from other manufacturers and see what their Terminal Lead Tolerances are. 

Sometimes the component manufacturer will only provide the Minimum dimension and you need to figure out the Maximum dimension. 

Average Terminal Tolerances for chip components by Case Code:
  • 01005 - 0.03
  • 0201 - 0.05
  • 0402 - 0.10
  • 0603 - 0.15
  • 0805 - 0.20
  • 1206 - 0.25
  • 1812 - 0.30
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 0.285 seconds.