×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

PTH to SMT

PTH to SMT

PTH to SMT

(OP)
Ok,

So I've got the through hole PCB pretty much completed and now I want to see how small I can make an equivalent with surface mount technology.

How do I find the max. wattage the equivalent SMT components can handle?



joecad

RE: PTH to SMT

Look up the thermal resistance specs and absolute maximum spec ratings in the datasheets of the parts you want to use.

Editorial comment: If you're going from THT to SMT you may want to consider redesigning the board to integrate some of the THT components if possible...lots of SMT parts have never existed in THT so you must be using old technology (yes, a bad assumption since I know nothing about what you're building - if it's high power maybe it's a really bad assumption...if it's a bunch of 4000 series gates then it's not).

RE: PTH to SMT

Just look at the spec for the surface mount version of the device.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources