# MCP9808 High Accuracy I2C Temperature Sensor Breakout Board

**Type:** Product page · **SKU:** ADA1782 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/mcp9808-high-accuracy-i2c-temperature-sensor-breakout-board.html ([markdown](https://core-electronics.com.au/mcp9808-high-accuracy-i2c-temperature-sensor-breakout-board.html.md))

This I2C 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...

## Pricing

- **Price:** $9.30 (inc GST) — $8.45 AUD, exc GST
- **Quantity discounts:** 10+ $8.20 (exc GST) · 50+ $8.04 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 5 today, and up to 500 more in 8–12 days.

## Description

This I2C 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. There are 3 address pins so you can connect up to 8 to a single I2C bus without address collisions. Best of all, a wide voltage range makes is 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 any Arduino compatible. 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)

## Technical Details

Technical specs:

- Sensing Temperature: -40ºC ~ 125ºC
- Accuracy: 0.25ºC typical
- Voltage - Supply: 2.7V ~ 5.5V
- Operating Temperature: -40ºC ~ 125ºC
- Uses any I2C address from 0x18 thru 0x1F
- [Datasheets, Fritzing object, PCB CAD files and more in the tutorial](https://learn.adafruit.com/adafruit-mcp9808-precision-i2c-temperature-sensor-guide/downloads)

Dimensions:

- 21mm x 13mm x 2mm / 0.8" x 0.5" x 0.08"
- Weight: 0.9g

 ![](https://core-electronics.com.au/attachments/localcontent/rohs_icon_8216055e11.jpg)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/7/1782-00.jpg)