PTC Thermistor: where to buy quantity 1

[rdfisch]

I am repairing the power supply of a halogen desk lamp.

It uses a PTC Thermistor for heat/overload protection and it has physically decomposed (leads fallen off the package - it looks similar to a disk capacitor).

Markings on it say PTC C840 and after web research it seems it is an EPCOS B59840C0160A070. Where can I but just one of these ? Online or brick&mortar ? (I can go to NYC if need be).

It is rated at 400mA, 6 Ohms, 160 degrees C.

Spec sheet is at **broken link removed**

I have been surfing the web and the closest thing I can find in US is submit request for quote which I assume means they want to deal with people that need 100's. I've been away from electronics for quite some time. Where can a DIY electronics guy go these days ? TIA for any help.

 

[hjames]

www.digikey.com, www.mouser.com, www.newark.com, also future-active, alliedelec. They'll charge you 500% of list bulk price, but at least you won't have to buy them in quantities of 1000.

I think Digikey and Newark are both Epcos distributors, but I could just be imagining it.

BTW, if you look at the contact info page from the manufacturers, they'll usually list their distributors.

 

[Hero999]

Is this just being used for over current protection?

If so you can't find said componant then just replace it with a slow blow fuse or breaker.

 

[mvs sarma]

Hi Rdfisch
Is it in series to input AC supply before the bridge rectifier (or just after the bridge before the elcetrolytic cap)to prevent inrush current ? (could perhaps be an NTC ) PL try to check again. if so you can very well follow HERO999's advice or even think of a fuse resistor.

 

[Hero999]

I think it's the same as a pollyfuse.

Many suppliers sell these, try Farnell, RS componants, Rapid electronics.