Comparison of Type 1 and Type 6 thermistortables.h data

[porksmash]

I'd just like to add that narrowing down the parts available on Digikey based on the specifications available on Makerfarm's spare thermistor page (plus assuming it is an EPCOS part) returns a single part. The exact part number appears to be B57560G0104F000. Here's a datasheet with the thermistor table starting at page 50. Can someone double-check I got all my info right?

[printbus]

I'd just like to add that narrowing down the parts available on Digikey based on the specifications available on Makerfarm's spare thermistor page (plus assuming it is an EPCOS part) returns a single part. The exact part number appears to be B57560G0104F000. Here's a datasheet with the thermistor table starting at page 50. Can someone double-check I got all my info right?

Yeah, but I don't think you can actually order the B57560G0104F000. It's not a stocked part at either DigiKey or Mouser, and if you go to the EPCOS site that part number is no longer valid.

[porksmash]

That's true, but no thermistors from EPCOS currently in production match the exact specs as listed on Makerfarm's website either. The closest one is B57560G1104+000. Either specs are incorrect, the listing for the replacement thermistor is out of date, or Colin has a huge stockpile.

[printbus]

That's true, but no thermistors from EPCOS currently in production match the exact specs as listed on Makerfarm's website either. The closest one is B57560G1104+000. Either specs are incorrect, the listing for the replacement thermistor is out of date, or Colin has a huge stockpile.

FWIW, B57560G1104+000 was the EPCOS part I "assumed" when I built the EPCOS summary table in the original post. That data tracks almost exactly (within one or two ADC counts) to what Marlin has for the Type 1 thermistor and also the MakerFarm adjustments to the Type 6 data. I don't know how much faith to put in the MakerFarm specs. They get a lot of their electronic stuff from reprapdiscount, and the B57560G104F 100K thermistor at reprapdiscount shows a different beta value from what MakerFarm says. MakerFarm doesn't state the temperature points for the beta curve, so it's hard to tell for sure if they're the same.

I also suspect that 99% of the thermistors out there should more accurately be described as "B57560G104F equivalent" and are not truly EPCOS parts. Just like our Arduino Mega2560 board is not really a board built by Arduino - it's a clone.