Desperately Need Help Identifying Thermistor!!!!!

[PBXTech]

I'm currently looking for this Thermistor, but I don't know the manufacturer or part number, just what it looks like. No one has been able to help me, for at least a month now, and I need it to repair something!!
I've attached a picture of it, hopefully it opens. If not, shoot me an email at teresa@pbexchange.com and I can send it to you. PLEASE PLEASE PLEASE someone help me out!!!

[PBXTech]

The info under the pic. in my last post is WRONG. I've attached a new pic, with the correct information. again, please please please someone help me out with this!!

[Netlist]

You don't happen to have a real life picture? Sorry to ask as you probably put a lot of work in the drawing.
What do you measure with an ohm meter? Are you sure its a thermistor?

/Hugo

[peranders]

Odd shape for being a thermistor but very common for a cap.

[jackinnj]

You can try the following companies -- Honeywell, YSI Temperature, Vishay -- can spend anything from a quarter to several hundred dollars.

[anatech]

Hi PBXTech,
You can't even start looking without some basic information. If it's a thermister, it will have a resistance specified at 20 or 25 °C normally. You need to know the temperature coeffecient and whether it's positive or negative (increasing or decreasing with temperature).

If you had the make and model number of what you are fixing, it might help. A schematic would be extremely helpful.

So I'd start by measuring it with an ohmmeter and check it for capacitance. It sure looks like a capacitor as Hugo and peranders have suggested.

-Chris

[wrenchone]

What you show may very well be a Raychem positive tempco limiter. The shape and color are about right, and I think the logo is theirs. What do ohmmeter measurements tell you?

[singa]

After googling for raychem, I think it's not a thermistor or I could be wrong.If it's a thermistor "20" would mean 20 ohm but conventional practice would also indicate tolerance like 20K @+/- 10 %.What make you think it's bad?Is it open/short?

The part numbering is untraceable and most likely be obsolete or discontinued.Now base on shape it's looks like a resetable overcurrent device and I'm sure you can find something similar.

http://www.circuitprotection.com/radial.asp

BTW raychem is now under Tyco Electronics.

[wrenchone]

Well yeah, that's what I meant - I coulldnt find the words at the time. Raychem was acquired by Tyco. These devices are commonly used to protect tweeters. You've got a good fix on the device type now, anyway. . If you can't find the exact info on the device, you could characterize it by its starting resistance and how it behaves with some current run through it, and match it up with something close in the current catalog. I think Digi-Key sells them.

[jackinnj]

Originally posted by wrenchone
Well yeah, that's what I meant - I coulldnt find the words at the time. Raychem was acquired by Tyco. These devices are commonly used to protect tweeters. You've got a good fix on the device type now, anyway. . If you can't find the exact info on the device, you could characterize it by its starting resistance and how it behaves with some current run through it, and match it up with something close in the current catalog. I think Digi-Key sells them.

Raychem Polyswitch?

parenthetically -- Raychem was one of the hottest stocks back in the 1970's -- they came up with the insulating tape which wrapped the Alaskan pipeline, the wiring for the F16, F18 and etc., etc. -- but the company always flirted with disaster. Well, Tyco did some pretty smart purchasing of companies but itself became a disaster ! Hubris always catches up with investors.