{"title":"Breadboard Friendly I2C Temperature Sensor - TC74A0","handle":"breadboard-friendly-i2c-temperature-sensor-tc74a0","url":"/products/breadboard-friendly-i2c-temperature-sensor-tc74a0","description":"A simple I2C temperature sensor in a breadboard-friendly TO-220 package. The TC74A0 provides basic temperature readings with ±2°C accuracy — a straightforward choice when you need easy temperature logging or monitoring without fussing over complex wiring.\n\nWorks with both 3.3 V and 5 V logic, making it compatible with virtually any microcontroller or single-board computer. Uses the LM75-compatible I2C protocol, so existing libraries work out of the box.\n\nKey Features\n\n\nTO-220 Package – 5-pin, plugs directly into a breadboard\n\nI2C Interface – SDA (pin 2), GND (centre), SCL (pin 4), VDD (pin 5)\n\n±2°C Accuracy – Suitable for general-purpose temperature monitoring\n\n3.3 V or 5 V Compatible – Works with any logic level\n\nLM75-Compatible Protocol – Supported by widely available libraries\n\nRecommended I2C Speed – 100 kHz or 400 kHz\n\n\n\nNote: You will need to add I2C pull-up resistors on your breadboard if your I2C controller does not have them built in.\n\n\nIdeal For\n\nQuick temperature logging and monitoring\nBreadboard prototyping with I2C sensors\nLearning I2C communication basics\n\n\nPackage Contents\n\n1× TC74A0 I2C Temperature Sensor (through-hole, TO-220)\n\n\nResources\n\n\nArduino PCT2075 Library (LM75-compatible)\nCircuitPython / Python PCT2075 Library\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":2933,"title":"Default Title","sku":"AF-4375","price":5.75,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":101,"option1":"Default Title"}]}