×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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!

*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

PTC thermistors

PTC thermistors

PTC thermistors

(OP)
Does anyone have a source for surface mount PTC thermistors? Specifically, I am looking for a thermistor that would have a room temperature value in the 10k to 30k range and a 0.4%/*C or higher slope.

The only supplier I found that had PTCs with that high of a resistance was a place called Quality Thermistor (thermistor.com). The prices they quoted were unbelieveable - not only were they not in the ballpark, they weren't in the same state.

thanks in advance.

RE: PTC thermistors

besides thermistor you can use special temp.sensor IC
or even transistor or diode as sensor.

What is your application? How many/year? What kind of accuracy do you need?


----------------------------
Please read FAQ240-1032
My WEB: <http://geocities.com/nbucska/>

RE: PTC thermistors

Quality Thermister is frankly... an embarrasment. Their prices are so far beyond usable I too shake my head.

Have you done a Digikey or Mouser search?  Digikey shows 12 pages of PTCs in its search engine(perhaps they're all fuses though).

Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com

RE: PTC thermistors

(OP)
yes, I've searched through those sources. I'm thinking I will have to find some other route. The problem is it has to be as cheap as possible - customers won't want to implement this if it is too expensive.

The PTC would be used as a direct replacement for a resistor in the analog system loop.

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! Already a Member? Login



News


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close