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# Adafruit MCP9808 High Accuracy I2C Temperature Sensor Breakout - STEMMA QT / Qwiic

**Type:** Product page · **SKU:** ADA5027 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/adafruit-mcp9808-high-accuracy-i2c-temperature-sensor-breakout-stemma-qt-qwiic.html ([markdown](https://core-electronics.com.au/adafruit-mcp9808-high-accuracy-i2c-temperature-sensor-breakout-stemma-qt-qwiic.html.md))

The MCP9808 digital temperature sensor is one of the more accurate/precise we've ever seen, with a typical accuracy of ±0.25°C over the sensor's -40°C to +125°C range and precision of +0.0625°C. They work great with any microcontroller using standard I2C. With three address jumpers on the back, you can connect up to 8 to a single I2C bus without address collisions. Best of all, a wide voltage range makes it usable with 2.7V to 5.5V logic!

## Pricing

- **Price:** $9.25 (inc GST) — $8.41 AUD, exc GST
- **Quantity discounts:** 10+ $8.15 (exc GST) · 50+ $7.99 (exc GST)

## Availability & dispatch

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## Description

The MCP9808 digital temperature sensor is one of the more accurate/precise Adafruit have ever seen, with a typical accuracy of ±0.25°C over the sensor's -40°C to +125°C range and precision of +0.0625°C. They work great with any microcontroller using standard I2C. With three address jumpers on the back, you can connect up to 8 to a single I2C bus without address collisions. Best of all, a wide voltage range makes it usable with 2.7V to 5.5V logic!

Unlike the DS18B20, this sensor does not come in through-hole package so they placed this small sensor on a breakout board PCB for easy use. The PCB includes mounting holes, and pull down resistors for the 3 address pins. They even wrote a lovely little tutorial and library that will work with Arduino or CircuitPython. You'll be up and running in 15 minutes or less.

Some quick specs:

- Simple I2C control
- Up to 8 on a single I2C bus with adjustable address pins
- 0.25°C typical precision over -40°C to 125°C range (0.5°C guaranteed max from -20°C to 100°C)
- 0.0625°C resolution
- 2.7V to 5.5V power and logic voltage range
- Operating Current: 200 μA (typical)

To get you going fast, Adafruit spun up a custom made PCB with the MCP9808 and some supporting circuitry such as pull-up resistors and capacitors, in the[ **STEMMA QT** form factor](https://core-electronics.com.au/search/?q=stemma+qt), making them easy to interface with. The [STEMMA QT connectors](https://learn.adafruit.com/introducing-adafruit-stemma-qt/what-is-stemma-qt) on either side are compatible with the [SparkFun Qwiic](https://core-electronics.com.au/catalogsearch/result/?q=qwiic) I2C connectors. This allows you to make solderless connections between your development board and the MCP9808 or to chain them with a wide range of other sensors and accessories using a [**compatible cable**](https://core-electronics.com.au/search?q=stemma%20qt%20cable). [QT Cable is not included, but Adafruit have a variety in the shop](https://core-electronics.com.au/search/?q=stemma+qt+cable).

Each order comes with one fully assembled and tested PCB breakout and a small piece of header. You'll need to solder the header onto the PCB to use with a solderless breadboard. but it's fairly easy and takes only a few minutes even for a beginner.

**Technical Details**

- Product Dimensions: 25.4mm x 17.6mm x 4.6mm / 1.0" x 0.7" x 0.2"
- Product Weight: 1.6g / 0.1oz

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/5/0/5027-00.jpg)