I need help to identify this Thermistor and find replacement

PJCP

Feb 22, 2025
3
Joined
Feb 22, 2025
Messages
3
This is a Xenon ignitor power supply made by ASTeX, EOL-175LR dated 2010. I was unable to locate either power supply itself or thermistor from the web. The thermistor itself has no any labels and the resistance measured is 1.3Kohm, diameter of thermistor manually measured is 17mmx5mm.
I wonder the one in the pic is no longer manufactured. TDK EPCOS PTC thermistors look similar but I could not find exact one with same specs.

IMG_9344.jpgIMG_9349.JPG
 

PJCP

Feb 22, 2025
3
Joined
Feb 22, 2025
Messages
3
I have couple of experience replacing the thermistor fixed ignition problem - the thermistor was taking from a known good power supply which is no longer available. I want to spare thermistors for feature use.
 

Bluejets

Oct 5, 2014
7,374
Joined
Oct 5, 2014
Messages
7,374
They're all diffrerent, both in resistance and type and power handling.
 

PJCP

Feb 22, 2025
3
Joined
Feb 22, 2025
Messages
3
It will be highly appreciated if someone can help me with it. Thanks in advance!
 

Delta Prime

Jul 29, 2020
2,987
Joined
Jul 29, 2020
Messages
2,987
You’re welcome, prematurely.
Unsolder that thermistor. I think I see writing on it. Take a photo of both sides. While unsoldered get your multimeter out, measure the resistance note that resistance then take a hairdryer pointed towards the thermistor if the resistance decreases while heated, it has a (NTC ) negative temperature coefficient the reverse is true If the resistance increases, it has a (PTC)positive temperature coefficient.
Given the specifications of the equipment you took it out of, you can use it again on equipment with the same specs.
 

m3chunga

Apr 3, 2025
1
Joined
Apr 3, 2025
Messages
1
Hi PJCP,

It is a 1000-Ohm Thermistor. It is used on the SS-200 and SS-400 Xenon Lamp Power Supply on a Woollam System. Here is an alternative part number from the OEM.

Part Description: THERMISTOR, PTC, 480 VOLT, 1K OHM
MFG PN: PTCEL13R102SBE
MFG: VISHAY
MOUSER PN: 594-PTCEL13R102SBE

Hope this help!

Matt
 
Top