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Description
Thermocouple Amplifier MAX31850K with 1-Wire OutputThermocouples are very sensitive, requiring a good amplifier with a cold compensation reference. So far we've carried the very nice MAX31855 which is an SPI interface thermocouple amplifier. The '855 is great but if you have a lot of thermocouples to measure it isn't terribly easy to use. That's why we are also carrying the new '850 model from Maxim it's a "1 Wire" thermocouple amp which can have any number of breakouts on a single shared I O line.
Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference. So far we've carried the very nice MAX31855 which is an SPI interface thermocouple amplifier. The '855 is great but if you have a lot of thermocouples to measure it isn't terribly easy to use. That's why we are also carrying the new '850 model from Maxim - it's a "1-Wire" thermocouple amp which can have any number of breakouts on a single shared I/O line.
The MAX31850K does everything for you, and can be easily interfaced with any microcontroller that has 1-Wire support. This breakout board has the chip itself, a 3.3V regulator with 10uF bypass capacitors all assembled and tested. This board can be used with 'parasitic power' - where the power is on the data line - or with 'local power' where the power for the converter comes in on the Vin Pin.
Please note: this board does not have level shifting on the 3V Data line - we did this on purpose so that it can be used in parasitic mode. The data line must be level shifted to 3V - our 4-channel shifter works wonderfully for level shifting 1-Wire and you only need one at the '1-Wire host' for all thermocouples on the shared data line.
The MAX31850K data format is very similar to that of the well known 1-Wire DS18B20 temp sensor but it is not drop in compatible without code changes to check for the new '1 Wire family' type. We have adapted the classic Arduino OneWire and DallasTemp libraries to be MAX31850 compatible, so please click on those links to grab our libraries.
Comes with a 2 pin terminal block (for connecting to the thermocouple), 4.7K data line pullup resistor, and pin header (to plug into any breadboard or perfboard). Goes great with our 1m K-type thermocouple. Not for use with any other kind of thermocouple, K type only!
- Works with any K type thermocouple
- Will not work with any other kind of thermocouple other than K type
- -270°C to +1370°C output in 0.25 degree increments
- Internal temperature reading
- 3.3 to 5v power supply. Data line is 3V only
- 1-Wire interface allows any number of thermocouple amps on a single data line
- Dimensions (without headers):20mm x 20mm
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★★★★★ 4
Tape small
Number of Items: 6
The tape rollers are much smaller than expected 2 in circles with little tape. WTf moment
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Must have
Number of Items: 2
This heat tape works beautifully, really holds the shirt in place.. It's a definite must have for your heat press
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Reviewed in the United States on April 12, 2026
★★★★★ 5
Sublimation tape that works.
Number of Items: 2
Very strong and sticky tape. Great to use for sublimation on tumblers. No residual left on tumblers. Holds amazing. Stretch is just enough to help you get things nice and tight.
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Reviewed in the United States on February 15, 2026
★★★★★ 5
Good Lg rolls for tape dispenser
Number of Items: 2
Very reliable & fits on the heat tape dispenser which is a relief!
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Fits in a standard tape dispenser
Number of Items: 12
First of all, I like the width of this tape when I don't need the full width of standard 20mm. It's great for delicate projects and minimizing taping over two-sided sublimations like keychains. There's just enough adhesion and it comes off cleanly so it does the job. If you don't need the full width of 20mm, this is a great value.
For those looking for a compatible dispenser, these rolls fit into a standard weighted Scotch tape base like the C-38. There will be room around the core because these rolls have a larger diameter, and room on either side because the rolls are thinner than standard Scotch tape, but once you pull the tape onto the blade, the roll remains taut and it's easy to remove pieces of your desired length with one hand.
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Reviewed in the United States on April 28, 2026