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Where to buy 10k thermistor for the heatbed? Reference

rodrigueroland

Where to buy 10k thermistor for the heatbed? Reference
December 24, 2012 04:49PM

Registered: 11 years ago
Posts: 15

Hello,

I bought a complete reprap kit and I'm trying to build everything...

I blew off my 10k thermistor... the wire breaks just near the component. Impossible to fix!

Where can I buy another 10k thermistor? What's the reference? If it's possible, I prefer to buy it on Farnel or RS component.

Thank you!

400px-Reprappro-mendel-bed-thermistor-leads.jpg

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rodrigueroland

Re: Where to buy 10k thermistor for the heatbed? Reference
December 25, 2012 04:05AM

Registered: 11 years ago
Posts: 15

I read all the informations on the wiki and I found this:
[reprap.org]
[reprap.org]
Others:
[knoxmakers.org]
[blog.reprap.org]

All 100k thermistors are documented but not the 10k!!! All thermistors were from EPCOS. I did some research on Farnell and RS-Components and I found these interresting documents:
[docs-europe.electrocomponents.com]
[docs-europe.electrocomponents.com]
[docs-europe.electrocomponents.com]

I think that I need to get B57551G1103F or 0103F?

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rodrigueroland

Re: Where to buy 10k thermistor for the heatbed? Reference
December 25, 2012 06:44AM

Registered: 11 years ago
Posts: 15

Ok, I command a B57560G103F and B57550G103F. The difference is the diameter 1.3 vs 2.3mm .
I couldn't find a B57540G103F (diameter 0.8mm) in Europe (+25€ from USA).

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MarkMarsh

Re: Where to buy 10k thermistor for the heatbed? Reference
December 25, 2012 08:02AM

Registered: 15 years ago
Posts: 34

Can't get to my PC to check at the moment but you might be able to find it on here

[github.com]

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rodrigueroland

Re: Where to buy 10k thermistor for the heatbed? Reference
December 25, 2012 02:15PM

Registered: 11 years ago
Posts: 15

If you speak about this file: [github.com]
They only say: 10k thermistor

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MarkMarsh

Re: Where to buy 10k thermistor for the heatbed? Reference
December 26, 2012 12:27PM

Registered: 15 years ago
Posts: 34

The reprappro one is B57540G0103F00

[uk.farnell.com]

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aznoohwee

Re: Where to buy 10k thermistor for the heatbed? Reference
January 06, 2013 11:23PM

Registered: 11 years ago
Posts: 2

I was able to source a replacement for my reprappro from sparkfun 10K Thermistor. It is quite a bit larger than the original, but I was able to drill the hole in the heatbed out to fit, and used some thermal paste to improve the heat transfer. The thermistor calibration value needed to be updated in the firmware as well, B25/85 to 3977. It seems to work better than the original since it is not as thin and is less prone to breaking.

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rodrigueroland

Re: Where to buy 10k thermistor for the heatbed? Reference
January 28, 2013 05:19PM

Registered: 11 years ago
Posts: 15

Finally, I used:
EPCOS - B57560G104F - THERMISTOR, NTC
EPCOS - B57560G103F - THERMISTOR, NTC

Datasheets:
[www.farnell.com]
[www.farnell.com]

I must change beta values for both thermistor:
M304 H0 B3450 R4700 T10000
M304 H1 B4036 R4700 T100000

Followed by M500 to store these informations in non-volatile memory